taxonID	type	description	language	source
03DA87ADFF901263FF2EFA99FEE78373.taxon	materials_examined	Holotypus: (♀) Italia Piemonte Pontechianale CN Colle Agnello m 2050, 2. VIII. 1986 Scaramozzino (ZSM), type studied.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF901263FF2EFA99FEE78373.taxon	description	Description: ♀: Bodylength 4.5 - 5.5 mm. Flagellawith 35 - 37 segments; 1 st flagellomeres length 7.5 x width and 0.64 x eye length, 2 nd flagellomeres length 5.0 x width, preapical flagellomeres c. 2 x longer than wide. Temples strongly narrowed behind eyes, length 0.5 x eye width. Ocelli very large, OOD 0.5 - 0.7. Face with parallel sides, width 1.0 x length of clypeus + face and 0.8 x eye length, punctate. Frons almost smooth. MI 0.3. Mandibles with equal teeth. Malar spaces, ventral 0.3 of facial orbits and mandibular bases finely striate. Occipital carina complete medially. Genal carinae reach the hypostomal ones close to mandibular bases (distance c. 0.3 x length of malar spaces). Pronotum with very superficial punctures, almost smooth; mesoscutum with fine and moderately dense punctures apico-medially and fine superficial punctures laterally; mesopleura with fine dense punctures dorsally and with coarse scattered punctures ventrally; metapleura with moderately dense superficial punctures. Area basalis slender, triangular to trapezoid, length c. 2 x width; area superomedia length 2.4 x width and 1.3 - 1.5 x length of area petiolaris, costulae in frontal 0.3 - 0.35; area petiolaris length 1.1 x width. femora length 4.9 - 5.6 x height; hind metatarsi short, length 0.41 x length of hind tibiae; hind claws short, with short basal teeth; distal fore tarsomeres slightly swollen, length 2.7 x width. Areolets pointed, oblique, 2 nd recurrent veins proximal to their middle; nervuli interstitial; postnervuli intercepted in basal 0.2 - 0.3; pterostigma length 3.6 x width, radial veins in distal 0.65. 1 st tergite length 3.0 x width; postpetiolus length 1.4 x width, smooth; 2 nd tergite length 0.95 x width; thyridia large, roundish. Ovipositor sheaths length 5.8 - 6.3 x height and 0.8 - 0.9 x length of hind metatarsi. Colour: Reddish. Ocellar space and frons usually brownish to blackish medially. Flagella more or less infuscate apically. Mesoscutum with three more or less distinct reddishbrown longitudinal stripes. Pterostigmata hyaline-ochreous, margins slightly darker. ♂: Flagella with 35 - 39 segments. OOD 0.9. Mesopleura with rather dense or scattered punctures. Areae basalis and superomedia sometimes confluent. Legs slender; hind femora length 5.9 - 6.1 x width. Claws without distinct teeth. Clasper stab-shaped, slightly clubbed apically, length 1.0 - 1.2 x length of 2 nd hind tarsomeres.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF901263FF2EFA99FEE78373.taxon	biology_ecology	Hosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF901263FF2EFA99FEE78373.taxon	distribution	Distribution: Austria *, Czech Republic (Moravia) *, Italy, Kirgizstan *, Russia (FarEast) *.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF971262FF2EFBBAFCF88425.taxon	materials_examined	Holotypus: (♀) Oxford 7.81, C 12 Denis OWEN (American Entomological Institute), typenot studied.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF971262FF2EFBBAFCF88425.taxon	description	Description: ♀: Bodylength 5.5 - 7.5 mm. Flagellawith 37 - 41 segments, preapical flagellomeres c. 2 - 2.5 x longer than wide; 1 st flagellomeres length 6.0 x width and 0.66 x eye length; 2 nd flagellomeres length 4.2 x width. Temples strongly and almost linearly narrowed behind eyes, length c. 0.45 - 0.55 x eye width. OOD 0.8 - 1.0. Face densely and coarsely punctate, width 1.0 - 1.1 x length of clypeus + face and 0.8 - 0.9 x eye length, with parallel sides. Clypeus with scattered punctures. Mandibels with two equal teeth. MI 0.3 - 0.4. Malar spaces, mandibular bases and ventral 0.3 x of facial orbits striate. Occipital carina complete, rarely obsolete medially. Genal carinae reach the hypostomal ones far from mandibular bases (distance to bases c. 0.7 - 1 x length of malar spaces). Mesosoma densely pilose. Mesoscutum with scattered superficial punctures laterally and coarse dense punctures caudal-medially; mesopleura with fine and moderately dense punctures dorsally and with fine scattered punctures ventrally; metapleura with scattered superficial punctures. Area basalis narrowly trapezoid or rectangular, 2 - 2.5 x longer than wide, rarely confluent with area superomedia, rarely with apical stalk; area superomedia slender, length c. 3.2 - 3.5 x width and 1.85 x length of area petiolaris, costulae in frontal 0.3; area petiolaris length 0.85 x width. Hind femora length 5.3 x height; hind metatarsi length 0.5 x length of hind tibiae; apical fore tarsomeres not swollen, length 2.6 - 2.7 x width; hind claws with rather short basal teeth, middle teeth longest. Areolets pointed, oblique, 2 nd recurrent veins proximal to their middle, nervuli interstitial; pterostigma length 3.7 x width, radial veins in their distal 0.67. 1 st tergite length 2.9 x width; postpetiolus length 1.35 x width, smooth; 2 nd tergite length 1.05 x width; thyridia large, roundish. Ovipositor sheaths densely pilose, slightly sabre-shaped, length 5.6 - 6.3 x height and 0.75 - 0.8 x length of hind metatarsi, moderately narrowed in apical 0.4. Colour: Red. Head reddish; mandibular bases, malar spaces and ventral facial orbits usually cream-yellowish; ocellar field often more or less brownish. Mesosoma reddish; mesoscutum with two lateral and one fronto-medial reddish-brown longitudinal stripes; scutellum yellowish-red. Metasoma reddish; 1 st and 2 nd tergites slightly darker red. Legs reddish-yellow. Pterostigmata hyaline. ♂: Body length 6.5 - 7.5 mm. Flagella with 37 - 41 segments. Temples strongly but roundly narrowed behind eyes, length 0.55 x eye width. OOD 0.8 - 1.0. Hind femora length c. 5.4 x height. Clasper stab-shaped, slightly clubbed apically, length 1.1 - 1.2 x length of 2 nd hind tarsomeres. Structure and coloration as described for the ♀.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF971262FF2EFBBAFCF88425.taxon	biology_ecology	Hosts: Eulithris populata (LINNAEUS, 1758) (Lep. Geometridae) via Cryptopimpla sp. (Hym. Ichneumonidae).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF971262FF2EFBBAFCF88425.taxon	distribution	Distribution: Austria *, Bulgaria *, Germany *, Kirgizstan *, Norway, Russia * (Tver and Arckhangelask regions), Sweden *, United Kingdom	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF961261FF2EFC91FD96861D.taxon	materials_examined	Holotypus: (♀) Russia: North Caucasus, Stavropol Terr.: Karachaevo-cherkessiya, Teberdinskij Natural Reserve, 10 km S of Archyz, valley of Kyzgych River, 2. VII. 1976, leg. D. Kasparyan (St. Petersburg).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF961261FF2EFC91FD96861D.taxon	description	Description: ♀: Bodylength 7 mm. Flagellawith 47 segments; 1 st flagellomeres length 6 x width and 0.73 x eye length; 2 nd flagellomeres length 3.8 x width, preapical flagellomeres c. 2 x longer than wide. Temples strongly narrowed behind eyes, length 0.55 x eye width. OOD 1.2. Face wide, with slightly divergent sides ventrally, width c. 1.2 x length of clypeus + face and c. 1.0 x eye length, coarsely punctate. Frons and clypeus smooth, with scattered punctures. MI 0.2. Mandibles with two equal teeth. Malar spaces distinctly striate. Occipital carina shortly interrupted medially. Genal carinae reach the hypostomal ones far from mandibular bases. Pronotum with fine granulation and very superficial punctures; mesoscutum with dense coarse punctures caudal-medially and with superficial punctures laterally; mesopleura with fine dense punctures dorsally and scattered punctures ventrally; metapleura with fine and moderately dense punctures. Hind femora length 5.7 x height; hind metatarsi length c. 0.47 x length of hind tibiae; hind claws with 5 - 6 rather short teeth in basal 2 / 3; distal fore tarsomeres slender, length c. 3 x width. Areolets pointed; 2 nd recurrent veins slightly distal to their middle; nervuli interstitial; postnervuli intercepted in basal 0.3; pterostigma length c. 3.3 x width, radial veins in their distal 0.7. 1 st tergite length 3.4 x width; postpetiolus length 1.8 x width, smooth; 2 nd tergite length 1.3 x width. Ovipositor sheaths pilose, length 7.2 x height and 0.9 x hind metatarsi length, slightly narrowed apically, not bent apically. Colour: Yellowish-brown (including ocellar space and ovipositor sheath). Palps, mandibles except teeth, genae, clypeus, wide facial and frontal orbits, tegulae, hind edges of pronotum, wing bases, fore and middle coxae and trochanters cream-yellow. Mesoscutum with an indistinct brownish stripe frontal-medially. 2 nd tergite with some brownish-red suffusion laterally. Pterostigmata hyaline-ochreous. Males andhosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF961261FF2EFC91FD96861D.taxon	distribution	Distribution: Russia (Caucasus).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF951261FF2EFE58FDAA8120.taxon	materials_examined	Holotypus: (♀) TRBurdur 1650 m Dirmir, 07.07.2004, leg. J. Kolarov (Munich). Paratypes: (♀) similar label (Munich); (♀) Kirgisistan, Alaj Gebirge, Majdan-Schlucht, 2000 - 3000 m, 10. - 11. VII. 1997, leg. W. Dolin (Munich); (♂) Turkey: Mugla, Univ. campus, 700 m, 37 ° 09 N 28 ° 22 E SW-PT, Bartak + K, 1 - 10. V. 2013 (Linz).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF951261FF2EFE58FDAA8120.taxon	description	Description: ♀: Bodylength 6 - 6.5 mm. Flagellawith 40 - 44 segments; 1 st flagellomeres length 5.8 - 6.1 x width and 0.67 x eye length; 2 nd flagellomeres length 3.5 - 3.7 x width. Temples moderately and roundly narrowed behind eyes, length 0.75 x eye width. OOD 0.9 - 1.0. Face with coarse dense punctures, wide, sides slightly divergent ventrally, width 1.25 - 1.3 x length of clypeus + face and 1.0 - 1.1 x eye length. Clypeus with scattered punctures. Frons smooth, with scattered punctures; vertical orbits distinctly punctate. MI 0.2. Mandibles with two equal teeth. Malar spaces distinctly striate. Occipital carina complete medially (sometimes weak). Genal carinae reach the hypostomal ones far from mandibular bases. Mesoscutum densely punctate caudalmedially, with superficial punctures laterally; mesopleura with coarse dense punctures; metapleura with fine and moderately dense punctures. Area basalis trapezoid, length 1.5 x width, confluent with area superomedia; area superomedia length c. 1.8 x width and 1.35 x length of area petiolaris, costula in the middle; area petiolaris length 0.9 - 1.0 x width. Hind femora length 4.3 - 5.3 x height; hind metatarsi length 0.5 x length of hind tibiae; hind claws with 5 - 6 long teeth in basal 2 / 3; distal fore tarsomeres slightly swollen, length 2.5 - 2.6 x width. Areolets shortly stalked; 2 nd recurrent veins proximal to their middle; nervuli interstitial; postnervuli intercepted in basal 0.3 - 0.4; pterostigma length 3.1 - 3.2 x width, radial veins in their distal 0.7. 1 st tergite length 2.7 x width; postpetiole length 1.5 x width, sometimes with few rugae; 2 nd tergite length 0.9 x width. Ovipositor sheaths length 6.3 - 7.5 x height and 0.9 x length of hind metatarsi. Colour: Yellowish-red (including ocellar space and ovipositor sheaths). Palps, mandibles except teeth, genae, clypeus, wide facial and frontal orbits, tegulae, hind edges of pronotum, wing bases, fore coxae and trochanters cream-yellow. Pterostigmata hyalineochreous, margins slightly darker. ♂: Bodylength 6.5 mm. Flagellawith 41 segments. Temples wide, slightly widened behind eyes, and moderately narrowed apcially, length c. 0.8 x eye width. OOD 1.2. Hind femora length c. 4.9 x height. Claspes long, stab-shaped, slightly clubbed apically, length c. 1.3 x length of 2 nd hind tarsomeres. Colour: Yellowish-red. Palps, mandibles except teeth, clypeus, face, inner orbits, malar spaces and genae yellow. Frontal margin and hind edges of pronotum, tegulae, subtegular ridges and wing bases cream-yellow. Legs reddish-yellow; fore and middle coxae and all trochanters pale-yellow. Pterostigmata hyaline-ochreous.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF951261FF2EFE58FDAA8120.taxon	biology_ecology	Hosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF951261FF2EFE58FDAA8120.taxon	distribution	Distribution: Kirgizistan, Turkey	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF94126FFF2EFF23FC508636.taxon	materials_examined	Holotypus: (♀) withoutoriginallabel (Coll. CURTIS / Melbourne), typenotstudied. syn. Cryptus (Mesochorus) fulgurans HALIDAY, 1838: 114, preoccupied by CURTIS 1833. Lectotypus: (♀) fulgurans (Dublin). syn. Mesochorus pectinipes THOMSON, 1886: 336, preoccupied by BRIDGMAN 1883. Lectotypus: (♀) Scan (Lund). syn. Mesochorus fulvus THOMSON, 1886: 336. Lectotypus: (♀) Pål (Lund), synonymized by HORSTMANN 2006: 1462. syn. Mesochorus suecicus DALLA TORRE, 1901: 58 (nom. nov. for M. pectinipes THOMSON), synonymized by HORSTMANN 2006: 1462. syn. nov. Mesochorus minowai UCHIDA, 1929.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF94126FFF2EFF23FC508636.taxon	discussion	Ta xonomica l remar k: Ihad the opportunity to study Japanese material (from Niigata Pref., Sado island) determined as Mesochorus minowai UCHIDA. The specimens belong to M. fulgurans CURTIS. Ihave not seen the type of M. minowai UCHIDA yet, but the pictures of the type material provided by K. KONISHI are also similar to M. fulgurans. I therefore synonymize both species here.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF94126FFF2EFF23FC508636.taxon	description	Description: ♀: Bodylength 5.3 - 7.0 (- 10.5) mm. Flagellawith 40 - 46 segments; 1 st flagellomeres length 6.1 x width and 0.6 x eye length; 2 nd flagellomeres length 4.1 x width; preapical flagellomeres c. 2 x longer than wide. Temples strongly narrowed behind eyes, length 0.4 - 0.5 x eye width. Ocelli very large, OOD 0.45 - 0.65. Face width 1.05 x length of clypeus + face and 0.8 x eye length, with parallel sides. MI 0.2 - 0.3. Mandibles with two equal teeth. Malar spaces and lower 0.2 of facial orbits striate, sometimes also mandibular bases. Occipital carina complete medially. Genal carinae reach the hypostomal ones far from mandibular bases; hypostomal carinae narrow. Mesoscutum with coarse and dense punctures caudal-medially and with superficial punctures laterally, mesopleura with fine dense punctures dorsally and moderately dense and coarse punctures ventrally; metapleura with fine and moderately dense punctures. Area basalis trapezoid or rectangular, pointed or with short stalk apically; area superomedia length 1.7 - 2.2 x width and 1.75 x length of area petiolaris; area petiolaris length 0.8 x width. Hind femora length 5.0 x height; hind metatarsi length 0.49 x length of hind tibiae; hind claws completely pectinate, with strong and long teeth; distal fore tarsomeres moderately swollen, length c. 2.3 - 2.5 x width. Areolets pointed-sessile, oblique; 2 nd recurrent veins usually in or proximal to their middle; nervuli interstitial, sometimes slightly antefurcal; pterostigma length 3.5 x width. 1 st tergite length 2.8 - 3.0 x width; postpetiole length 1.3 - 1.4 x width, smooth; 2 nd tergite length 1.3 x width; thyridia large, transversal-oval. Ovipositor sheaths length 5.5 - 6.8 x width and 0.65 - 0.77 x length of hind metatarsus. Colour: Reddish including ocellar space and ovipositor sheaths. Palps, mandibles except teeth, often inner orbits, genae, tegulae, wing bases, fore coxae and trochanters yellowish. Sometimes median lobe of mesoscutum slightly brownish frontally. Pterostigmata pale yellowish-brown, margins slightly darker. ♂: Flagellawith 41 segments. Temples strongly narrowed behind eyes, length c. 0.5 x eye width. Hind femora length 5.7 height. 2 nd tergite length 1.2 x width. Hind claws without visible teeth. Claspers slender, apically blunt, not thickened, length 16 x width, length c. 1.1 - 1.2 x length of 2 nd hind tarsomeres. Colour as described for the ♀.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF94126FFF2EFF23FC508636.taxon	biology_ecology	Hosts: Abraxas grossulariata (LINNAEUS, 1758) (Lep. Geometridae) via Hyposoter tricolor (RATZEBURG, 1844) (Hym. Ichneumonidae).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF94126FFF2EFF23FC508636.taxon	distribution	Distribution: Armenia *, Austria, Czech Republic, Germany, Italy, Japan, Kirgizstan *, Liechtenstein *, Russia including Far East, Sweden, Ukraine	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9B126FFF2EFE86FC9B8259.taxon	materials_examined	Holotypus: (♀) Pålsiö (Lund), typenotstudied.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9B126FFF2EFE86FC9B8259.taxon	description	Description: ♀: Bodylength 7 - 8 mm. Flagellawith 43 - 44 segments; 1 st flagellomeres length 6.5 - 7.3 x width and 0.7 x eye length; 2 nd flagellomeres length 4.4 - 5.0 x width; preapical flagellomeres c. 2 x longer than wide. Temples strongly narrowed behind eyes, length 0.6 x eye width. OOD 0.65 - 0.85. Sides of face parallel or slightly divergent ventrally, width of face 1.1 - 1.15 x length of clypeus + face and 1.0 x eye length. MI 0.4. Lower mandibular teeth slightly larger and longer than the upper ones. Malar spaces, ventral 0.3 of facial orbits and mandibular bases finely striate. Genal carinae reach the hypostomal ones far from mandibular bases. Mesoscutum with dense coarse punctures caudal-medially and with superficial punctures and strong shine laterally; mesopleura with fine dense punctures dorsally and fine scattered punctures ventrally; metapleura with fine superficial punctures. Area basalis slender, trapezoid, length c 2.5 x width; area superomedia very slender, length 3.3 x width; area petiolaris short, length 0.7 x width. Hind femora length 4.3 - 4.8 x height; hind metatarsi length 0.54 x length of hind tibiae; hind claws slender, with 3 - 4 short basal teeth; distal fore tarsomeres slender, length c. 2.8 - 3.0 x width. Areolets pointed-sessile or shortly stalked, oblique; 2 nd recurrent veins usually in their middle; nervuli interstitial; postnervuli intercepted at basal 0.4; pterostigma length c. 3.7 x width, radial veins in their distal 0.65. 1 st tergite length 3.0 - 3.5 x width; postpetiole smooth, length 1.4 - 1.8 x width; 2 nd tergite length 1.2 - 1.45 x width; thyridia roundish. Ovipositor sheaths length 7.7 - 7.9 x width and 0.68 - 0.7 x length of hind metatarsi. Colour: Reddish including ocellar space and ovipositor sheaths. Palps, mandibles except teeth, genae, hind edges of pronotum, tegulae, wing bases, fore and middle coxae and all trochanters yellowish. Pterostigmata very pale ochreous, margins almost not darker. ♂: Body length 7.5 mm. Flagella with 44 segments. 1 st tergite length 3.6 x width; 2 nd tergite length 1.6 x width. Claspers stab-shaped, apically blunt, not distinctly clubbed, length c. 17 x width and 1.1 - 1.4 x length of of 2 nd hind tarsomeres.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9B126FFF2EFE86FC9B8259.taxon	biology_ecology	Hosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9B126FFF2EFE86FC9B8259.taxon	distribution	Distribution: Byelorussia *, China (Yunnan) *, Germany, Russia * (St. Petersburg distr.), Sweden, Turkey *, Ukraine *, United Kingdom *	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9B126EFF2EFA9DFE328438.taxon	materials_examined	Holotypus: (♀) Traunstein 13.7.1960; Mesochorusfulgurans Curt. R. Bauer ♀ (Munich). Ta xonomica l remar k: This species is closely related to M. heterodon HORSTMANN. It differs by its wider face, trapezoid area basalis, longer area petiolaris, and slenderer distal fore tarsomeres.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9B126EFF2EFA9DFE328438.taxon	description	Description: ♀: Bodylength 7 mm. Flagellawith 44 segments; 1 st flagellomeres slender, length c. 8 x width and 0.85 x eye length; 2 nd flagellomeres length c. 5.0 x width. Temples moderately narrowed behind eyes, length 0.7 x eye width. Ocelli small, OOD 1.5 - 1.6. Face very wide, sides slightly divergent ventrally, width 1.22 x length of clypeus + face length and 1.15 x eye length, with coarse punctures. Frons finely granulate and with some scattered punctures. MI 0.6. Lower mandibular teeth distinctly larger than the upper ones. Genae and mandibular bases finely striate. Occipital carina complete medially. Genal carinae reach the hypostomal ones far from mandibular bases. Pronotum punctate, frontal margin smooth; mesoscutum with coarse dense punctures caudalmedially and with fine scattered punctures laterally; mesopleura with moderately dense punctures; metapleura with fine and moderately dense punctures. Area basalis trapezoid, length 1.6 x width; area superomedia length 2.2 x width, costulae in frontal 0.35; area petiolaris length 1.2 x width. Hind femora length 5.8 x height; hind claws slender, with 3 short teeth at bases; distal fore tarsomeres slender, length c. 3.3 width. Areolets pointed sessile, very oblique; 2 nd recurrent veins in their middle; nervuli interstitial; postnervuli intercepted at basal 0.35. Frontal margins of pterostigmata folded. 1 st tergite length 3.3 - 3.4 x width; postpetiolus smooth, length 1.8 x width; 2 nd tergite length 1.24 x width. Ovipositor sheaths rather slender, length 8.3 x width and 0.8 x length of hind metatarsi. Colour: Reddish including ocellar space. Palps, clypeus, genae, wide inner orbits, hind edges of pronotum, tegulae and wing bases yellow. Pterostigmata very pale ochreous. Ovipositor sheaths dark brownish. Males andhosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9B126EFF2EFA9DFE328438.taxon	distribution	Distribution: Germany.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9A126DFF2EFC72FC4C861D.taxon	materials_examined	Holotypus: (♀) Italia Piemonte, La Cassa (Torino), VII. 1982, Scaramozzino leg. (Munich), type studied.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9A126DFF2EFC72FC4C861D.taxon	description	Description: ♀: Bodylength 6 - 7 mm. Flagellawith 43 - 46 segments, very slender; 1 st flagellomeres length c. 7 - 7.5 x width and 0.8 x eye length; 2 nd flagellomeres length 5 x width; preapical flagellomeres c. 1.8 x longer than wide. Temples moderately narrowed behind eyes, length c. 0.75 x eye width. OOD 1.5 - 1.8. Face with slightly convergent sides, width 1.1 x length of clypeus + face and 0.95 x eye length. MI 0.5 - 0.6. Lower mandibular teeth more or less longer than the upper ones. Malar spaces and mandibular bases finely striate. Occipital carina complete medially. Genal carinae reach the hypostomal ones far from mandibular bases. Mesoscutum with dense coarse punctures; mesopleura with dense coarse punctures dorsally and moderately dense punctures ventrally; metapleura with dense but superficial punctures. Area basalis with apical stalk; area superomedia length c. 2.1 x width and 1.6 x length of area petiolaris, costulae in frontal 0.3; area petiolaris length 0.7 x width. Hind femora length 4.7 x height; hind metatarsi long, length 0.51 - 0.56 x length of hind tibiae; hind claws slender, with 2 - 3 short basal teeth; distal fore tarsomeres slightly swollen, length 2.3 - 2.8 x width. Areolets pointed-sessile, very oblique; 2 nd recurrent veins distal to their middle; nervuli interstitial; postnervuli intercepted at basal 0.3 - 0.35; pterostigma length 3.3 x width, radial veins in their distal 0.68. 1 st tergite length 3.3 - 3.5 x width; postpetiole length smooth, 1.7 x width; 2 nd tergite length 1.2 x width. Ovipositor sheaths length 7.5 - 7.7 x width and 0.7 - 0.73 x length of hind metatarsi. Colour: Reddish including ocellar space. Palps, mandibles except teeth, clypeus, genae, inner and outer orbits, hind edges of pronotum, tegulae, wing bases, fore and hind coxae and trochanters yellow. Pterostigmata very pale ochreous. Ovipositor sheaths dark brownish. Males andhosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9A126DFF2EFC72FC4C861D.taxon	distribution	Distribution: Bulgaria *, Germany, Italy, Norway *, Ukraine *	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF99126DFF2EFE58FDDD825E.taxon	materials_examined	Holotypus: (♀) Azerbaijan, Zakataly Natural Reserve, base Richuk, 2300 m, oak-beech forest, 25. VIII. 1982, leg. D. Kasparyan (St. Petersburg).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF99126DFF2EFE58FDDD825E.taxon	description	Description: ♀: Body length 6 mm. Flagellawith tips broken off, slender; 1 st flagellomeres length 6.4 x width and 0.7 x eye length; 2 nd flagellomeres length 4.3 x width. Temples moderately and roundly narrowed behind eyes, length 0.75 x eye width. Ocelli small, OOD 1.4. Face with parallel sides, width 1.3 x length of clypeus + face and 1.0 x eye length, densely punctate. Facial orbits with coarse and moderately dense punctures. MI 0.25. Mandibles with two equal teeth. Genae, malar spaces and ventral 0.1 of facial orbits striate. Occipital carina complete medially. Genal carinae reach the hypostomal ones far from mandibular bases; hypostomal carinae not elevated. Sides of pronotum with scattered fine punctures; mesoscutum with dense coarse punctures caudal-medially and with finer and moderately dense punctures laterally; mesopleura with fine dense punctures dorsally and rather dense coarse punctures ventrally; metapleura with fine, moderately dense punctures. Area basalis rectangular, confluent with area superomedia; area superomedia length 2.3 x width, costulae slightly frontal to its middle; area petiolaris about as long as wide. Hind femora length 5.2 x height; hind metatarsi long, length 0.54 x length of hind tibiae; hind claws with 5 long teeth in the basal 2 / 3; length of distal fore tarsomeres 2.8 x width. Areolets shortly stalked; 2 nd recurrent veins proximal to their middle; nervuli interstitial; postnervuli intercepted in basal 0.3; pterostigma length 3.0 - 3.2 x width, radial veins in their distal 0.7. 1 st tergite length 2.8 x width; postpetiolus smooth, length 1.5 x width; 2 nd tergite length 0.85 x width; thyridia roundish. Ovipositor sheaths completely pilose, length 8 x width and 0.75 x length of hind metatarsi, narrowed in apical third. Colour: Yellowish-red including ocellar space. Palps, mandibles except teeth, genae, facial and frontal orbits widely cream-yellow. Hind edges of pronotum, tegulae, and wing bases yellowish. Legs reddish-yellow; hind tibiae yellowish, apical 0.15 (1 x width) brownish-red. Pterostigmata brownish, paler proximally. Ovipositor sheaths blackish. Males andhosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF99126DFF2EFE58FDDD825E.taxon	distribution	Distribution: Azerbaijan	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF99126CFF2EFA9EFCCF84BB.taxon	materials_examined	Lectotypus: (♀) Lap; lapponicus (Lund), type studied.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF99126CFF2EFA9EFCCF84BB.taxon	description	Description: ♀: Bodylength 6.5 - 8 mm. Flagellawith 42 - 46 segments; 1 st flagellomeres length 6.5 x width and 0.64 x eye length; 2 nd flagellomeres length 4 x width; preapical flagellomeres c. 2 x longer than wide. Temples strongly narrowed behind eyes, length 0.5 x eye width. OOD 0.7 - 1.0. Face width 1.05 x length of clypeus + face and 0.8 - 0.9 x eye length, punctate, with parallel or slightly convergent sides ventrally. Clypeus with scattered punctures. MI 0.25 - 0.3. Mandibles with two equal teeth. Malar spaces, mandibular bases and ventral 0.3 of facial orbits striate. Occipital carina complete medially. Genal carinae reach the hypostomal ones far from mandibular bases, hypostomal carina slightly elevated. Pronotum largely smooth; mesoscutum with dense and coarse punctures caudal-medially and with dense but finer punctures laterally; mesopleura with dense fine punctures dorsally and moderately dense to scattered punctures ventrally; metapleura with fine scattered punctures. Area basalis trapezoid or rectangular, length 1.7 - 2 x width; area superomedia length 2.1 - 2.3 x width and 2.2 x length of area petiolaris, costulae in frontal 0.3 - 0.4; area petiolaris about as long as wide. Hind femora length 5.1 - 5.3 x height; hind metatarsi length 0.46 x length of hind tibiae; hind claws with 3 - 4 short basal teeth; length of distal fore tarsomeres c. 2.6 - 2.7 x width. Areolets pointed-sessile, oblique; 2 nd recurrent veins in or slightly proximal to their middle; nervuli interstitial; postnervuli intercepted at basal 0.2; pterostigma length 3.0 x width, radial veins in their distal 0.7. 1 st tergite length 3.2 - 3.6 x width; postpetiole smooth, length 1.7 x width; 2 nd tergite length 1.05 - 1.25 x width; thyridia transversal-oval. Ovipositor sheaths length 6.8 - 8.0 x height and 0.72 - 0.76 x length of hind metatarsi, slightly narrowed in apical half. Colour: Reddish including ocellar space and ovipositor sheaths. Palps, mandibles except teeth, malar spaces, inner orbits, hind edges of pronotum, tegulae, wing bases, fore and middle coxae and trochanters completely and fore and middle femora frontally yellowish. Pterostigmata brown, paler proximally and distally. Ovipositor sheaths yellowish. ♂: Claspers pointed apically, length 1.4 x length of 2 nd hind tarsomeres. Hosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF99126CFF2EFA9EFCCF84BB.taxon	distribution	Distribution: Norway, Russia (Karelia), Sweden.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF98126BFF2EFBF3FBD084D7.taxon	materials_examined	Types missing (HORSTMANN, 1986: 331), interpretation after the original description. syn. nov. Mesochorus georgievi SCHWENKE, 2004: 85. Ho l o t y p u s: (♀) Bulgaria, Stara Planina Mts., Gintsi vill., 1.200 mt; in Saperdapopulnea galls on Populus tremula, 17.3.2002, G. Georgiev (Munich), type studied.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF98126BFF2EFBF3FBD084D7.taxon	discussion	Ta xonomica l re ma rk: Ihavestudiedthetypeof M. georgievi SCHWENKE. Head and mesosoma are completely reddish; the metasoma (brownish) - red with slightly darker apical tergites, the colour differences are small. Structure and colour are otherwise similar to M. laricis HARTIG, and Ifound no relevant differences between both species.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF98126BFF2EFBF3FBD084D7.taxon	description	Description: ♀: Bodylength 6.5 - 8.0 mm. Flagellawith 35 - 48 segments; 1 st flagellomeres length c. 7 x width and 0.65 x eye length; 2 nd flagellomeres length 3.8 x width. Temples strongly narrowed behind eyes, length 0.55 - 0.6 x eye width. Ocelli very large, OOD 0.6 - 0.8. Face punctate, with parallel sides or slightly convergent ventrally, width 0.95 - 1.0 x length of clypeus + face and 0,82 x eye length. MI 0.4. Malar spaces, ventral 0.4 of facial orbits and bases of mandibles finely striate. Mandibles with two equal teeth. Occipital carina complete medially. Genal carinae reach the hypostomal ones far from mandibular bases. Mesoscutum with fine, moderately dense punctures caudalmedially and with superficial punctures laterally; mesopleura with fine dense punctures dorsally and moderately dense punctures ventrally; metapleura with fine superficial punctures. Area basalis pointed or shortly sessile or stalked, rarely fused with area superomedia; area superomedia length 2.3 - 2.8 x width and 1.5 x length of area petiolaris, costulae basal to its middle; area petiolaris length 1.0 - 1.2 x width. Hind femora length 5.1 - 5.4 x height; hind metatarsi length 0.48 x length of hind tibiae; hind claws slender, with 2 - 4 short basal teeth; distal fore tarsomeres slender, length c. 3.0 - 3.2 x width. Areolets pointed-sessile, oblique; 2 nd recurrent veins in or proximal to their middle; nervuli interstitial or slightly postfurcal (1 x width); postnervuli intercepted in basal 0.25 - 0.4; pterostigma length c. 3.2 - 3.5 x width. 1 st tergite length 2.9 - 3.5 x width; postpetiolus smooth, length 1.6 x width; 2 nd tergite length 1.2 - 1.5 x width; thyridia large, transverse. Ovipositor sheaths completely pilose, length 6.2 - 7.1 x height and 0.7 - 0.8 x length of hind metatarsi. Colour: Yellowish-red. Ocellar space sometimes more or less fuscous. Palps, mandibles except teeth, malar spaces, genae, sometimes ventral facial orbits, hind edges of pronotum, tegulae, wing bases, fore coxae and trochanters, sometimes also middle coxae yellowish. Hind tibiae sometimes slightly and indistinctly darkened at apex. Flagella more or less darkened distally. Pterostigmata pale ochreous, margins slightly darker. Ovipositor sheaths yellowish-red to reddish-brown. ♂: Flagella with 44 segments. Temples moderately and roundish narrowed behind eyes, length 0.6 - 0.75 x eye width. OOD 0.8 - 0.9. Hind femora length 5.1 - 5.2 x height. Mesopleura with very scattered punctures. Claspers very slender, apically blunt, not clubbed apically, length 20 x width and 1.4 x length of 2 nd hind tarsomeres.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF98126BFF2EFBF3FBD084D7.taxon	distribution	Distribution: Bulgaria *, Czech Republic *, Georgia *, Germany, Norway *, Portugal *, Russia * (Karelia, Far East), Sweden *, Ukraine, United Kingdom *, Turkey.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9F126AFF2EFC27FCE38330.taxon	materials_examined	Ho l o t y p u s: (♂) I, TNRiva Rocchetta, 400 - 800 m, 20.5.1982, Haeselb. (Munich), type studied. syn. Mesochorus falcatus SCHWENKE, 1999: 71, preoccupied by DASCH, 1974, synonymized by HORSTMANN, 2006: 1477. Holotypus: (♂) Dessau 4 km SSW, 7.8.86, K. H. ZOERNER; 100 / 86 Taubeufer (Müncheberg), type studied. syn. Mesochorus lunatus SCHWENKE, 2002: 91 (nom. nov. for M. falcatus SCHWENKE), synonymized by HORSTMANN, 2006: 1477. syn. nov. Mesochorus pectinellus HORSTMANN, 2006: 1476 - 1477. Ho l o t y p u s: (♀) 38, ex Puppenvon Cymatophoridae (Munich), type studied. Ta xonomica l r emark: This taxon shows some sexual dimorphism in the size of ocelli and the forms of claws. Due to other structural similarities, especially the bare proximal half of the subbasal cells of fore wings, Ihave no doubt about the above mentioned synonymy of M. pectinellus.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9F126AFF2EFC27FCE38330.taxon	description	Description: ♀: Bodylength 7 - 9 mm. Flagellawith 35 - 42 segments; 1 st flagellomeres length c. 6.0 - 6.2 x width and 0.55 x eye length; 2 nd flagellomeres length 3.5 - 4 x width; preapical flagellomeres c. 2 x longer than wide. Temples strongly narrowed behind eyes, length 0.45 - 0.5 x eye width. Ocelli large, OOD 0.5 - 0.6. Face with slightly convergent sides, width 1.0 - 1.1 x length of clypeus + face and 0.7 x eye length. MI 0.25. Mandibles with two equal teeth, rarely upper mandibular teeth slightly larger than lower ones. Malar spaces, ventral 0.3 of facial orbits and often bases of mandibles finely striate. Occipital carina complete medially. Genal carinae reach the hypostomal carinae near of mandibular bases (distance c. 0.5 x malar length). Mesoscutum with fine dense punctures; mesopleura with fine dense punctures dorsally and fine scattered punctures ventrally; metapleura with fine scattered and superficial punctures. Area basalis usually narrowly trapezoid or triangular, length c. 1.5 x width; area superomedia length 1.5 x width and c. 1.0 x length of area petiolaris, costulae in frontal 0.35; area petiolaris length 1.0 - 1.1 x width. Hind femora length 4.6 x height; hind claws with 5 very long teeth, strongly bent apically; distal fore tarsomeres swollen, length 2.2 - 2.4 x width. Areolets pointed-sessile, slightly oblique; 2 nd recurrent veins in or proximal to their middle; nervuli interstitial or more or less postfurcal; postnervuli intercepted in their basal 0.2 - 0.25; pterostigma length 3.6 x width, radial veins in their distal 0.6; subbasal cells of fore wings completely bare in the proximal half. 1 st tergite length 2.6 - 2.7 x width; postpetiole length 1.4 - 1.5 x width; 2 nd tergite length 1.1 x width. Ovipositor sheaths length 4.2 x height and 0.7 - 0.75 x length of hind metatarsi. Colour: Pale reddish-brown (including flagella and ovipositor sheaths). Palps, mandibles except teeth, genae, facial orbits, hind edges of pronotum, tegulae and wing bases yellow. Ocellar space brownish, sometimes pale. Pterostigmata pale ochreous, their margins darker. ♂: Bodylength 6 - 7.5 mm. Flagellawith 35 - 40 flagellomeres. OOD 0.7 - 0.85. Temples roundly narrowed behind eyes, length 0.6 - 0.65 eye width. Mesopleura with fine scattered punctures ventrally. Hind femora length 5.3 - 5.6 x height; hind claws with two basal teeth, strongly falcate apically. Subbasal cells of fore wings completely bare in the basal half. Claspers slender, apically blunt, not clubbed, length 17 x width and 1.25 - 1.4 x length of 2 nd hind tarsomeres. Colour as described for the ♀.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9F126AFF2EFC27FCE38330.taxon	biology_ecology	Hosts: Cymatophora sp. (Lep. Drepanidae) via Rogas sp. (Hym. Braconidae).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9F126AFF2EFC27FCE38330.taxon	distribution	Distribution: Bulgaria *, France *, Germany, Italy, Japan *, Russia * (St. Petersburg district and Far East), Sweden *, United Kingdom *.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9E1269FF2EFB7BFECE83B4.taxon	materials_examined	Holotypus: (♀) Russia, East Siberia, Transbaikalia, Karymskaya, rightfeederof Ingoda River, 4. VIII. 1975, leg. D. Kasparyan (St. Petersburg). Paratypes: (♀ ♂) Russia, Kaliningrad Prov., Curonian Spit (= Kurshskaya kosa), 34 - 35 th km, Alnus, Betula, litter, 4. VII. 1988, leg. A. Khalaim) (St. Petersburg); (3 ♀♀) Russia, East Siberia. Krasnoyarsk, Akademgorodok, betuletum, 28. VII. 1988, leg. D. Kasparyan (St. Petersburg and coll. Riedel); (♀) W. Siberia, r. Taz, Krasnoselkup. 17.08.992, leg. D. Kasparyan (St. Petersburg); (♀) Yakutia, 10 km SSW of Yakutsk, Rechevaya shkola, “ kolki ” with Betula, Rosa (forest outliers), 13. VII. 1990, leg. D. Kasparyan (St. Petersburg); (♂) Mongolia, 100 km E Iulanbatar, 20 km NE Terektz, Tuul riv., 15 - 21. VII. 2003, J. Halada leg. (Linz); (♀) Italia Liguria, Triova (IM), Calla Sauson 26. VII. 1986 Scaramozzino legit (Munich); (♀) TR: Artvin, Genya Mt. 28. VII. 2004, 1625 m, leg. S. Çoruh (Erzurum); (♂) S- Russia, Rostov reg., Veshenskaja, 2.8.2006, E. Khachikov leg. (Linz).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9E1269FF2EFB7BFECE83B4.taxon	description	Description: ♀: Bodylength 7 - 9.5 mm. Flagellawith 41 - 43 segments; 1 st flagellomeres length c. 6 x width and 0.62 - 0.65 x eye length; 2 nd flagellomeres length 4.0 - 4.5 x width; preapical flagellomeres c. 2 x longer than wide. Temples roundly but strongly narrowed behind eyes, length 0.5 - 0.6 x eye width. Ocelli large, OOD 0.7 - 0.9. Face with parallel or divergent sides ventrally, densely and coarsely punctate, width 1.15 x length of clypeus + face and 0.85 x eye length. MI 0.2 - 0.4. Mandibles with equal teeth. Malar spaces and ventral 0.2 of facial orbits finely striate. Occipital carina complete medially. Genal carinae reach the hypostomal ones far from mandibular bases. Mesoscutum with coarse and dense punctures caudal-medially and with dense but superficial punctures laterally; mesopleura with fine dense punctures dorsally and coarse and moderately dense punctures ventrally; metapleura with dense fine punctures. Propodeum - seen from lateral - distinctly angled between frontal horizontal and apical vertical parts, not roundly declined. Area basalis rectangular, usually confluent with area superomedia, c. 1.5 x longer than wide; area superomedia short, length 2.0 x width and 0.7 - 1.0 x as long as area petiolaris, costulae in or slightly frontal to its middle; area petiolaris large, length almost half the length of propodeum and 1.1 - 1.2 x width. Hind femora length 4.7 - 5.3 x height; hind metatarsi length 0.47 x length of hind tibiae; hind claws slender, their apices strongly bent, with about 4 - 5 short and narrowly spaced basal teeth; distal fore tarsomeres very slender, length 3.2 - 3.4 x width. Areolets shortly stalked or pointed and oblique; 2 nd recurrent veins proximal to their middle; nervuli interstitial or slightly post- or antefurcal; postnervuli intercepted in basal 0.3 - 0.4; pterostigma length c. 3.5 - 3.6 x width, radial veins in their distal 0.63. 1 st tergite length 2.5 - 2.7 x width; postpetiolus smooth, length 1.3 - 1.4 x width; 2 nd tergite length 0.95 - 1.1 x width; thyridia roundish. Ovipositor sheaths length 7.1 - 7.7 x height and 0.85 - 0.9 x length of hind metatarsi. Colour: (Brownish) - red. Palps, mandibles except teeth, genae, wide facial orbits, hind edges of pronotum, tegulae, and wing bases yellow to cream-yellow. Pterostigmata hyaline or hyaline-ochreous. ♂: Body length 7 - 8 mm. Flagella with 39 - 41 segments. Hind femora length 5.0 x height. Nervuli usually slightly postfurcal. 1 st tergite length 3.0 x width; postpetiolus length 1.7 x width. Hind claws with 2 - 3 short basal teeth. Claspers pointed apically, length 1.3 - 1.4 x length of 2 nd hind tarsomeres. Otherwise as described for the ♀. Colour: Reddish. Palps, mandibles, and genae cream-yellow. Mesoscutum yellowish, with two lateral and one median brownish-red stripe; scutellum pale yellow, with brownish-yellow baso-medial spot. Legs reddish-yellow. Hosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9E1269FF2EFB7BFECE83B4.taxon	distribution	Distribution: Italy, Mongolia, Russia (Rostov region, Siberia, Far East), Turkey	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9D1268FF2EFB07FD82843B.taxon	materials_examined	Holotypus: (♀) Russia, Yakutia, 9 - 10 km W of Yakutsk, Vilyujskij trakt (path), 22. VII. 1970, leg. D. Kasparyan (St. Petersburg).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9D1268FF2EFB07FD82843B.taxon	description	Description: Bodylength 6 mm. Flagellawith 41 segments, slender; 1 st flagellomeres length 6.4 x width and 0.7 x eye length; 2 nd flagellomeres length 4.5 x width; preapical flagellomeres almost 3 x longer than wide. Temples moderately and roundly narrowed behind eyes, length 0.65 x eye width. OOD 0.8. Face coarsely punctate, with central smoothened ridge, sides slightly divergent ventrally, width 1.1 x length of clypeus + face and 0.8 x eye length. Clypeus with scattered punctures. MI 0.25. Lower mandibular teeth distinctly larger than the upper ones. Genae, malar spaces and ventral 0.1 of facial orbits striate. Occipital carina shortly interrupted medially. Genal carinae reach the hypostomal ones far from mandibular bases, hypostomal carinae not elevated. Pronotum largely smooth; mesoscutum with coarse dense punctures caudal-medially and with superficial punctures laterally; mesopleura with finer dense punctures dorsally and with coarse but scattered punctures ventrally; metapleura with fine scattered punctures. Area basalis rectangular, confluent with area superomedia; area superomedia length c. 2.3 x width and c. 2 x longer than area petiolaris, costulae in frontal 0.35; area petiolaris about as long as wide. Hind femora length 5.2 x height; hind metatarsi length 0.49 x length of hind tibiae; hind claws with about 5 - 6 narrowly spaced basal teeth; distal fore tarsomeres length 2.6 x width. Areolets shortly stalked; 2 nd recurrent veins proximal to their middle, nervuli interstitial; postnervuli intercepted at basal 0.35; pterostigmata wide, length c. 2.7 x width, radial veins in their distal 0.7. 1 st tergite length 3.0 x width; postpetiolus length 1.6 x width, smooth; 2 nd tergite length 1.1 x width; thyridia roundish. Ovipositor sheaths pilose, length 6.4 x height and 0.77 x length of hind metatarsi, narrowed in apical half. Colour: Yellowish-red (including ocellar space and ovipositor sheaths). Palps, mandibles except teeth, genae, facial orbits, hind edges of pronotum, tegulae, and wing bases yellowish. Legs reddish-yellow; hind tibiae yellowish, slightly infuscate in apical 0.1. 2 nd tergite with some reddish-brown lateral suffusion; tergites 3 - 6 with narrow yellowish hind margins. Pterostigmata brownish, paler proximally and distally. Males andhosts unknown.	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9D1268FF2EFB07FD82843B.taxon	distribution	Distribution: Russia (FarEast).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9C1268FF2EFC2AFE8B8385.taxon	materials_examined	Holotypus: (♀) L. 30.8.1961 Alfeld Han.; ex Macrophya punctum-album L. (Tenthr.) (Munich).	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
03DA87ADFF9C1268FF2EFC2AFE8B8385.taxon	discussion	Ta xo n om i c a l r e m a r k: This species wasincluded into the M. fulvus - group by SCHWENKE (1999). The colour of the body is mainly reddish-yellow, but the apices of hind tibiae and 1 st and 2 nd tergites are distinctly brownish darkened. In my opinion, this species belongs to the M. declinans - group sensu SCHWENKE (1999: 34). Adetailed description and illustrations of this taxon will be given in a subsequent publication (RIEDEL 2018)	en	Riedel, Ravenhorst Matthias (2018): Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group. Linzer biologische Beiträge 50 (1): 687-716, DOI: 10.5281/zenodo.4031076
