taxonID	type	description	language	source
764E87B7FF8B0247FEB8FDE9FE1B9EBC.taxon	description	(Figs 1 – 18)	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8B0247FEB8FDE9FE1B9EBC.taxon	materials_examined	Type material examined. Ectomocoris cordiger: LECTOTYPE (present designation), ♀, “ Typus ” // “ Ind. or / bor. ” // “ Signoret ” // “ cordiger Stål ” // “ 492 / 83 ” // “ NHRS-GULI / 000000105 ” (NHRS). Pirates adjunctus: LECTOTYPE (present designation): Ô, “ LECTOTYPE ” [purple-margined disc] // “ Type ” [green-margined disc] // “ 58. / 60. ” [blue disc] – “ E. Ind ” [on reverse] // “ 67. PIRATES ADJUNCTUS ” // “ NHMUK 013588460 ” (NHM). PARALECTOTYPE: 1 ♀, “ Ind ” // “ Saunders. / 65.13. ” // “ Pirates adjunctus Walker’s Catal. ” (NHM). Ectomocoris picturatus: LECTOTYPE (present designation): ♀, “ LECTOTYPE ” [purple-margined disc] // “ Chikkaballapura / S. India. / T. V. Campbell. ” // “ S. India. / T. N. Campbell. / 1915 - 60. ” // “ Ectomocoris / picturatus / type Dist. ” // “ NHMUK 013588458 ” (NHM). Additional material examined. INDIA: 1 Ô, “ South India / T. V. Campbell / Coll. B. M. 1930 - 599. ” (NHM); 1 Ô 1 ♀, “ Calcutta ” (NHM); 1 ♀, “ India. / Weston Coll. ” // “ B. M. 1924 - 199. ” (NHM); 5 ÔÔ 5 ♀♀ (1 Ô dissected), “ 2010 - 2014 ” // “ INDIA, Andhra Pradesh / Nellore District / Naidupet mandal / Dwarakapuram village ” (CAU). NEPAL: 1 ♀, “ Hile ” // “ 2070 m Dhankuta ” // “ Nepal Nov. 2 ” // “ 1979 / M. Sato leg. ” (NMNS).	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8B0247FEB8FDE9FE1B9EBC.taxon	diagnosis	Diagnosis. Macropterous, medium-sized. Blackish brown to black, most parts of antennae and legs yellow, hemelytron with yellowish white, oval spot involving apical 1 / 2 to 2 / 3 of clavus and adjoining area of corium between veins Pcu + 1 A and Cu, and small, yellowish, round spot in inner cell of membrane. Lateral tubercles of neck tiny; median part of posterior margin of pronotum almost straight, lateral part slightly concave; apex of scutellar process knob-shaped, apex slightly directed obliquely backward in lateral view; protibia with fossula spongiosa occupying over 2 / 3 of tibial length, mesotibia with fossula spongiosa occupying about 1 / 2 of tibial length; in male, ventral surface of abdomen carinate in middle, seventh sternite without extragenital process; male genitalia with median pygophore process wavy and gradually tapered to extremely sharp apex in caudal view, blade-shaped, apical 1 / 3 gradually tapered, basal part with knobbed process in lateral view; apical margin of dorsal phallothecal sclerite nearly straight; lower corner of inner margin of lateral phallothecal sclerite with two sharp processes and lower one extending to venter of phallus.	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8B0247FEB8FDE9FE1B9EBC.taxon	description	Redescription. Macropterous male (Figs 4 – 6) and female (Figs 1 – 3, 7 – 9) known. Coloration blackish brown to black (Figs 1 – 9). Antennae yellow; first two visible labial segments dark brown, third segment yellowish brown; coxae and trochanters of legs yellowish brown, tibiae and femora of legs yellow, with most bases and most apices somewhat yellowish brown, tarsi of legs yellow, with apices yellowish brown; hemelytron with yellowish white, oval spot involving apical 1 / 2 to 2 / 3 of clavus and adjoining area of corium between veins Pcu + 1 A and Cu, membrane greyish brown with small, yellowish, round spot in inner cell; basal external corner of each connexival segment with small yellow spot. Structure. Medium-sized. Lateral margins of head and pronotum covered with brown setae; dorsal surface of head, stripes on anterior pronotal lobe, lateral area of posterior pronotal lobe, and lateral area of corium covered with yellowish-white, procumbent, short pubescence; thoracic pleura and abdominal sterna densely covered with yellowish-white, procumbent, short pubescence and golden, relatively long pubescence; legs densely covered with yellowish-white, procumbent pubescence and yellowish-brown, suberect or erect, thick setae of varying lengths, ventral surface of mesofemur also covered with several brown, thick setae. Head moderately elongate, anteocular part about 2.28 times as long as postocular part, postocular part protruding laterally in female (Figs 1, 7); antenna inserted near anterior margin of eye, scape thickest and shortest, last three antennomeres gracile with pedicel longest; first and second visible labial segments thick, third segment noticeably tapered, second segment longest with basal half slightly swollen; eye reniform in lateral view, reaching both upper and lower margins of head in male (Fig. 6), reaching upper margin but not reaching lower margin of head in female (Figs 3, 9); width of interocular space subequal to width of eye in dorsal view in male (Fig. 4), but slightly longer than width of eye in female (Figs 1, 7), with shallow, longitudinal groove in middle; ocelli large, conspicuously raised, separated from each other by about one width of ocellus; neck short, lateral tubercles of neck tiny. Pronotum with collar process not developed, apex rounded, slightly produced forward; anterior pronotal lobe with thin, shallow, median longitudinal sulcus, stripes distinct and covered with short pubescence; pronotal transverse sulcus deep; median part of posterior margin of pronotum almost straight, lateral part slightly concave, lateral pronotal angle round; meso- and metathoracic pleura and sterna finely granulose; mesosternum carinate, metasternum slightly tumid in middle; disc of scutellum flat, Y-shaped ridges robust, apex of scutellar process knob-shaped, apex slightly directed obliquely backward in lateral view. Legs with procoxa long and thick; profemur thickest with distinct thin ridge on ventral surface, mesofemur slightly thicker than metafemur; apices of pro- and mesotibiae extended into lobe, protibia with fossula spongiosa occupying over 2 / 3 of tibial length, mesotibia with fossula spongiosa occupying about 1 / 2 of tibial length. Hemelytron surpassing tip of abdomen in male (Fig. 4), nearly reaching (Fig. 7) to just reaching (Fig. 1) tip of abdomen in female. Abdomen of male oval, width subequal to width of posterior pronotal lobe, ventral surface carinate in middle, seventh sternite without extragenital process; abdomen of female fusiform with connexivum slightly dilated laterally and upturned. Male genitalia with pygophore oval (Fig. 10), median pygophore process wavy and gradually tapered to extremely sharp apex, dorsal surface ridged in middle, slightly oblique to right side in caudal view (Fig. 11), blade shaped, apical 1 / 3 gradually tapered, basal part with knobbed process in lateral view (Fig. 12); paramere broad, subtriangular with outer margin arcuate, apex of paramere with small mastoid process (Figs 13, 14), left paramere (Fig. 13) longer and straighter than right (Fig. 14); phallus in resting condition (Figs 15 – 18) with basal plate bridge slightly shorter than basal plate (Fig. 15); pedicel weakly curved, slightly shorter than basal plate (Figs 17, 18); dorsal phallothecal sclerite broad and strongly sclerotized, subrectangular with apical margin nearly straight (Fig. 15); lateral phallothecal sclerite strongly sclerotized (Fig. 16), lower corner of inner margin with two sharp processes and lower one extending to venter of phallus (Figs 16, 18). Measurements [in mm, Ô (n = 3), ♀ (n = 5)]. Body length 11.87 – 13.33 (Ô), 13.89 – 14.88 (♀); maximum width of abdomen 3.21 – 3.46 (Ô), 3.77 – 3.88 (♀); head length 2.13 (Ô), 2.19 – 2.30 (♀); head width 2.13 (Ô), 1.42 – 1.59 (♀); length of anteocular part 0.91 – 0.92 (Ô), 0.97 – 0.99 (♀); length of postocular part 0.38 – 0.39 (Ô), 0.41 – 0.48 (♀); width of eye 0.49 – 0.51 (Ô), 0.42 – 0.51 (♀); width of interocular space 0.50 (Ô), 0.56 – 0.58 (♀); distance between ocelli 0.26 – 0.28 (Ô), 0.22 – 0.27 (♀); lengths of antennomeres I: II: III: IV = 0.17: 2.18: 1.72:? (Ô), 1.03 – 1.12: 1.99: 1.70:? (♀); lengths of labial segments I: II: III = 0.70 – 0.71: 1.19 – 1.25: 0.61 (Ô), 0.74 – 0.75: 1.26 – 1.30: 0.71 – 0.73 (♀); length of anterior pronotal lobe 2.15 – 2.29 (Ô), 2.16 – 2.38 (♀); length of posterior pronotal lobe 0.89 – 0.99 (Ô), 1.02 – 1.10 (♀); width of anterior pronotal lobe 2.33 – 2.51 (Ô), 2.53 – 2.80 (♀); width of posterior pronotal lobe 3.16 – 3.28 (Ô), 3.22 – 3.59 (♀); length of scutellum 1.11 – 1.18 (Ô), 1.20 – 1.61 (♀); maximum width of scutellum 1.28 – 1.30 (Ô), 1.45 – 1.92 (♀); length of hemelytron 8.48 – 8.80 (Ô), 8.30 – 9.39 (♀).	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8B0247FEB8FDE9FE1B9EBC.taxon	distribution	Distribution (Fig. 19). Bangladesh (DISTANT 1904), India (WALKER 1873, DISTANT 1904), Iran (GHAHARI et al. 2024), Iraq (CHINA 1938), Nepal (WALKER 1873), Saudi Arabia (LINNAVUORI 1986), Sri Lanka (DISTANT 1904).	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8B0247FEB8FDE9FE1B9EBC.taxon	discussion	Comments on synonyms. STÂL (1867) described Ectomocoris cordiger based on the female type (Figs 1 – 3) collected from India. DISTANT (1904) synonymized the Indian species, Pirates adjunctus Walker, 1873, with E. cordiger. He noticed one important diagnostic character of this species, i. e., “ a small spot on outer area of basal cell to membrane, luteous ” (STÂL 1867, DISTANT 1904). We examined two type specimens of P. adjunctus deposited in NHM with the male one designated here as the lectotype (Figs 4 – 6), and further confirmed the synonymy proposed by DISTANT (1904). Later, DISTANT (1919) described another Indian species, E. picturatus, without any comparison with E. cordiger and did not mention the characteristic small yellowish spot in the description, which might be the reason why he treated it as a different species. After examining the type specimen of E. picturatus (Figs 7 – 9) deposited in NHM, we found that there is also a small yellowish spot in the inner cell of the membrane, but it is indeed obscure due to the colour fading of the type specimen (Fig. 7, in blue circle). Besides, we cannot find any other valuable and stable morphological characters to distinguish the type specimens of E. cordiger and E. picturatus, thus E. picturatus should be regarded as a junior subjective synonym of E. cordiger.	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8C024AFC30FC9DFA05932E.taxon	description	(Figs 20 – 36)	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8C024AFC30FC9DFA05932E.taxon	materials_examined	Type material examined. Reduvius fenestratus: LECTOTYPE (present designation): Ô, SUDAN: “ Typus ” // “ fenestratus / n. ” // “ Ambukohl Lhrby / Augusto No. (?) 1 - 6 ” // “ bimaculatus / Ser. 1831. ” // “ 3185 ” // “ Zoolog. Museum / BERLIN (ZMB) / Germany ” (MFN). PARALECTO- TYPES: 2 ♀♀, “ Typus ” // “ fenestratus Klug / Ambukohl / Ehrenberg / Kat. No. 3185 ” // “ Zoolog. Museum / BERLIN (ZMB) / Germany ” (MFN). We only examined the images of the types of E. fenestratus that were kindly shared by Jürgen Deckert. Ectomocoris costatus: HOLOTYPE: Ô, YEMEN: “ Holotype ” [red-margined disc] // “ Type ” [red-margined disc] // “ YEMEN, / 1 mile W. of Ta’izz, / On road to / Mocha, ca. 4,500 ft., / 20. xii. 1937. ” // “ Taken in Mosque / by pool. ” // “ B. M. Exp. To / S. W. Arabia. / H. Scott & / E. B. Britton. / B. M. 1938 246. ” // “ Ectomocoris / costatus sp. n. / N. C. E. Miller det. 1951. ” // “ NHMUK 013588384 ” (NHM). PARATYPE: 1 ♀, SAUDI ARABIA: “ ARABIA: Wadi Amq, / II. ii. 1937 / H. St. J. B. Philby. / B. M. 1937 228. ” // “ Ectomocoris / costatus sp. n. / N. C. E. Miller det. 1951. ” // “ NHMUK 013588385 ” (NHM). Additional material examined. UGANDA: 1 Ô (dissected), “ Uganda Prot ” // “ C. S. Betton. / 1902 - 146. ” (NHM). SPAIN: CANARY ISLANDS: 1 Ô, “ Canary Is. / T. V. Wollaston. / 69 - 85 ” (NHM).	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8C024AFC30FC9DFA05932E.taxon	diagnosis	Diagnosis. Macropterous, medium to large-sized species. Black, hemelytron with yellow, oval spot between veins Pcu + 1 A and Cu on corium, membrane with thin, yellowish, obscure stripe along outer margin of vein M, membrane also with small, yellow, subtriangular spot at base of veins R and M, but sometimes absent in certain individuals (e. g. holotype of E. costatus, Fig. 24). Lateral tubercles of neck distinct, surface of tubercle with some tiny granules; posterior margin of pronotum arcuate; surface of scutellum rough, scutellar process short, horizontal or apex weakly directed obliquely backward in lateral view; protibia with fossula spongiosa occupying about 2 / 3 of tibial length, mesotibia with fossula spongiosa occupying over 1 / 2 of tibial length; hemelytron almost reaching but not surpassing tip of abdomen; in male, ventral surface of abdomen flat in middle without carina, seventh sternite without extragenital process; male genitalia with median pygophore process long, spine-shaped, dorsal surface ridged in middle with pair of pointed knobs near base in caudal view, blade-shaped with inner margin almost straight, apical 1 / 3 gradually tapered to sharp apex in lateral view; apical margin of dorsal phallothecal sclerite rounded; inner margin of lateral phallothecal sclerite with many small, sharp processes and also extending to venter of phallus.	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8C024AFC30FC9DFA05932E.taxon	description	Redescription. Macropterous male (Figs 20, 24, 26, 27) and female (Fig. 21). Coloration black (Figs 20, 21, 24 – 27). Second to fourth antennomeres, third visible labial segment and tarsi of legs brown; hemelytron with yellow, oval spot between veins Pcu + 1 A and Cu on corium, membrane with thin, yellowish, obscure stripe along outer margin of vein M (Figs 20, 21, 24), membrane also with small, yellow, subtriangular spot at base of veins R and M (Figs 20, 21), but sometimes absent in certain individuals (e. g., holotype of E. costatus, Fig. 24), apical part of membrane pale brown. Structure. Medium to large-sized, robust. Most of body covered with blackish, thick setae of varying lengths; dorsal surface of head and thoracic pleura densely covered with whitish, procumbent, short pubescence; apical parts of tibiae and tarsi also covered with brown setae. Head distinctly elongate, anteocular part about three times as long as postocular part, postocular part protruding laterally; antenna inserted near anterior margin of eye, scape thickest and shortest, last three antennomeres gracile and tapered; first and second visible labial segments thick, third segment noticeably tapered and slightly shorter than first, second segment longest with basal half slightly swollen; eye reniform in lateral view, reaching upper margin but not reaching lower margin of head; width of interocular space longer than width of eye in dorsal view, with shallow, longitudinal groove in middle and small pit at base; ocelli large, conspicuously raised, separated from each other by more than one width of ocellus; lateral tubercles of neck distinct, surface of tubercle with some tiny granules. Pronotum with collar process developed, apex rounded, produced forward; anterior pronotal lobe with thin, shallow, median longitudinal sulcus, stripes distinct and covered with whitish, short pubescence; pronotal transverse sulcus deep and with some longitudinal wrinkles; posterior margin of pronotum arcuate, lateral pronotal angle round; meso- and metathoracic pleura and sterna finely granulose; mesosternum carinate, metasternum slightly tumid and with several transverse winkles near base; surface of scutellum rough, disc of scutellum almost flat, Y-shaped ridges distinct, scutellar process short, horizontal or apex weakly directed obliquely backward in lateral view. Legs with procoxa long and thick; profemur thickest with distinct thin ridge on ventral surface, mesofemur slightly thicker than metafemur; apices of pro- and mesotibiae extended into lobe, protibia with fossula spongiosa occupying about 2 / 3 of tibial length, mesotibia with fossula spongiosa occupying over 1 / 2 of tibial length. Hemelytron almost reaching but not surpassing tip of abdomen. Abdomen of male oval, width subequal to width of posterior pronotal lobe (Fig. 24) or slightly wider than width of posterior pronotal lobe (Fig. 20), ventral surface flat in middle, without carina, seventh sternite without extragenital process (Fig. 26); abdomen of female fusiform and distinctly wider than width of posterior pronotal lobe (Fig. 21). Male genitalia with pygophore oval and strongly sclerotized (Fig. 28), median pygophore process long, spine-shaped and gradually tapered to apex, dorsal surface ridged in middle with pair of pointed knobs near base (also visible from lateral view, Fig. 30), oblique to right side in caudal view (Fig. 29), blade shaped with inner margin almost straight, apical 1 / 3 gradually tapered to sharp apex in lateral view (Fig. 30); paramere broad, subtriangular with outer margin arcuate, apex of paramere almost round (Figs 31, 32), left paramere (Fig. 31) slightly longer and less curved than right (Fig. 32); phallus in resting condition (Figs 33 – 36) with basal plate bridge shorter than basal plate (Fig. 33); pedicel slightly curved, distinctly shorter than basal plate (Figs 35, 36); dorsal phallothecal sclerite broad and strongly sclerotized, apical margin rounded (Fig. 33); lateral phallothecal sclerite strongly sclerotized (Fig. 36), inner margin with many small, sharp processes and also extending to venter of phallus (Figs 34, 36). Measurements [in mm, Ô (n = 3), ♀ (n = 1)]. Body length 17.82 – 20.48 (Ô), 22.05 (♀); maximum width of abdomen 4.80 – 5.71 (Ô), 6.11 (♀); head length 2.89 – 3.30 (Ô), 3.28 (♀); head width 1.91 – 2.16 (Ô), 2.13 (♀); length of anteocular part 1.39 – 1.70 (Ô), 1.65 (♀); length of postocular part 0.38 – 0.51 (Ô), 0.61 (♀); width of eye 0.60 – 0.62 (Ô), 0.68 (♀); width of interocular space 0.70 – 0.81 (Ô), 0.89 (♀); distance between ocelli 0.31 – 0.36 (Ô), 0.40 (♀); lengths of antennomeres I: II: III: IV = 1.53 – 1.87: 3.00 – 3.55:?:? (Ô), 1.95: 3.68: 4.65:? (♀); lengths of labial segments I: II: III = 0.99 – 1.19: 1.54 – 2.11: 0.91 – 0.91 (Ô), 1.22: 2.06: 1.00 (♀); length of anterior pronotal lobe 3.32 – 3.91 (Ô), 3.90 (♀); length of posterior pronotal lobe 1.35 – 1.48 (Ô), 1.54 (♀); width of anterior pronotal lobe 3.59 – 4.22 (Ô), 4.29 (♀); width of posterior pronotal lobe 4.59 – 5.37 (Ô), 5.30 (♀); length of scutellum 1.72 – 2.16 (Ô), 2.33 (♀); maximum width of scutellum 2.48 – 3.00 (Ô), 2.98 (♀); length of hemelytron 11.06 – 12.69 (Ô), 13.15 (♀).	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8C024AFC30FC9DFA05932E.taxon	distribution	Distribution (Fig. 37). Cape Verde (LINDBERG 1959), “ Congo ” (WALKER 1873), Egypt (DISPONS 1961), Ethiopia (DE CARLINI 1895, MANCINI 1939), Ghana (VILLIERS 1948, as Togo: Kete-Kratji [= Kete Krachi]), Libya (DISPONS 1961), Mali (VILLIERS 1948, as Sudan: Tombouctou and Niger: Ansongo), Mauritania (VILLIERS 1948), Saudi Arabia (CHINA 1938; MILLER 1954, as E. costatus), Senegal (SERVILLE 1831, VILLIERS 1971), Sierra Leone (WALKER 1873), Somalia (LINNAVUORI 1982), South Sudan (LINNA- VUORI 1974),? Spain (Canary Islands) (OSHANIN 1912; LINDBERG 1936, 1953), Sudan (KLUG 1830, LINNAVUORI 1974), Uganda (CHINA 1938, no exact record; confirmed record), Yemen (MILLER 1954, as E. costatus). Ectomocoris fenestratus was recorded from the Canary Islands by OSHANIN (1912) and LINDBERG (1936, 1953), but the records were considered misidentifications of E. ululans (Rossi, 1790) by HEISS & BÁEZ (1990). Its occurrence in the archipelago was not confirmed later (e. g., PUTSHKOV & MOULET 2009, ROCA- CUSACHS et al. 2020). The specimen examined in this study may be mislabeled. Comments on synonyms. Ectomocoris fenestratus was originallydescribed by KLUG (1830) as Reduvius fenestratus based on specimens collected from Sudan. According to previous studies (SERVILLE 1831, WALKER 1873, DE CARLINI 1895, MALDONADO CAPRILES 1990), this species has a broad distribution in northern half of Africa. MILLER (1954) described E. costatus based on specimens from Yemen and Saudi Arabia, and discussed the differences between E. costatus and E. fenestratus as follows:	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
764E87B7FF8C024AFC30FC9DFA05932E.taxon	description	[E. costatus] “ Differs in its smaller size and its colour, in the shape of the spot on the corium and the absence of a small triangular yellowish spot on the costa. Structurally, the chief differences are (i) the shape of the scutellum, which is relatively wider and is more strongly depressed, and (ii) that the pleura are more finely shagreened, and (iii) the genitalia are of different form ”. However, after our examination of the type specimens of both species and other materials, we found that the characters proposed by MILLER (1954) to distinguish these two species correspond merely to intraspecific morphological variation. Firstly, as for the body size, we measured the distance between the apex of the head and the tip of the abdomen for the examined specimens, and this length ranges from 17.82 to 22.05 mm, so the body lengths indicated by MILLER (1954), 19.00 mm for male, 20.50 mm for female, are within the usual intraspecific range. As for colour differences, it is true that types of E. costatus have a smaller yellow spot on corium (Fig. 24) compared to the types of E. fenestratus (Figs 20, 21), and they lack the small, yellow, subtriangular spot at the base of the veins R and M on the membrane (Fig. 24), which is a more obvious difference. But among the examined specimens, the shape of the yellow spot on the corium varies, and the depth of colour of the small, subtriangular spot on the membrane also varies so much that it could be very inconspicuous in some individuals. Concerning the structural differences, the characters of scutellum and integument of pleura (see MILLER 1954) are unquantifiable and indistinctive when examining the specimens. Also, we dissected the male genitalia of the specimen with the small, yellow, subtriangular spot on the membrane conspicuous (Figs 28 – 36). The shape of the median pygophore process well matches MILLER’ s (1954: 404, figs 8 E, F) illustrations of the median pygophore process of E. costatus, which further confirms that E. fenestratus and E. costatus could be the same species and the differences in colour pattern are unstable characters that vary among conspecific individuals. Besides, the type localities (Yemen and SaudiArabia) of E. costatus are close to the known distribution of E. fenestratus (Fig. 37). Therefore, we conclude that E. costatus should be regarded as a junior subjective synonym of E. fenestratus.	en	Liu, Yingqi, Cai, Wanzhi (2025): Redescriptions of Ectomocoris cordiger and E. fenestratus (Hemiptera: Heteroptera: Reduviidae) with two new synonyms. Acta Entomologica Musei Nationalis Pragae 65 (1): 1-13, DOI: 10.37520/aemnp.2025.001, URL: https://doi.org/10.37520/aemnp.2025.001
