Clistopyga nasa Palacio & Bordera, 2025

Bordera, Santiago, Palacio, Edgard & Herrera-Flórez, Andrés Fabián, 2025, The Neotropical species of Clistopyga (Hymenoptera, Ichneumonidae, Pimplinae). Part VI: the C. calixtoi species group, with the description of twenty-four new species, Zootaxa 5662 (1), pp. 1-115 : 77-81

26. Clistopyga nasa Palacio & Bordera , sp. nov.

( Figs 39 , 40 , 51A , Appendix I).

Diagnosis. Clistopyga nasa may be distinguished from all other species of the C. calixtoi species group by the following combination of characters: mesoscutum mostly orange ( Figs 39A, 39I , 40A, 40C ); pronotum bicoloured black and white cream ( Figs 39F , 40D ); mesopleuron reddish, extensively stained white or yellow cream ( Fig. 39F , 40C ); propodeum with lateral white cream or yellow marks (39F, 40F); metasoma with tergite II–VIII mostly dark orange to blackish brow, without posterior defined white or yellow wide marks on tergites ( Figs 39A, 39J , 40E, 40H ); epomia as a short carina or small tubercle at the bottom of the submarginal depression of pronotum ( Fig. 39D–E , 40D ); submetapleural carina absent ( Figs 39F , 40F ). Additionally, female has genal orbits white cream, dorsal part much more narrow than ventral part ( Figs 39F–I ); metapleuron bicoloured black and white cream ( Fig. 39F ); ovipositor moderately stout and strongly up-curved at distal 0.35 ( Figs 39G–H ), 2.0–2.3× × as long as hind tibia ( Figs 39A, 39G–H ); ovipositor sheath 1.65–1.8× as long as hind tibia; ventral margin of ovipositor sheath basally with small denticles (Fig. B). Male has gena with a slightly impressed concavity posteriorly to mandibular base ( Fig. 40B , arrow).

Description. Female: Body length 7.8–14.2 mm. Fore wing length 4.7–10.2 mm.

Head ( Figs 39A, 39C, 39F, 39I ). In dorsal view, strongly narrowed behind eyes. Gena smooth and shiny with uniformly sparse setiferous punctures, in dorsal view slightly rounded, 0.28–0.35× as long as eye, in frontal view moderately constricted below eyes, straight to more or less sinuous. Frons and vertex smooth and shiny, with very isolated setiferous punctures. Posterior ocellus separated from eye 0.87–1.10× its maximum diameter. Distance between hind ocelli 0.60–0.87× maximum diameter of posterior ocellus. Hypostomal carina not lamelliform behind mandible. Face with fine and dense setiferous punctures, distance between punctures more than once the diameter of punctures. Clypeal suture strongly curved in the medial part. Clypeus 1.52–2.00× as broad as medially long, distinctly convex in dorsal half, with isolated fine punctures, flat in ventral half, with ventral margin slightly incurved. Malar space 0.60–0.80× as long as basal mandibular width, with a slightly granulate narrow subocular sulcus. Antenna with 27–32 flagellomeres, first flagellomere 7.1–8.3× as long as wide.

Mesosoma ( Figs 39A, 39D–F, 39I ). Pronotum smooth and shiny, with fine and scattered setiferous punctures in dorsal posterior part. Epomia as a short carina or small tubercle at the bottom of the submarginal depression of pronotum. Mesoscutum entirely smooth and shiny, with fine setiferous punctures, denser on anterior part of median lobe; anterior half of median lobe not conspicuously prominent, confluent with posterior half. Notaulus deep, reaching about 0.5 the length of mesoscutum. Mesopleuron smooth and shiny, with evenly sparse setiferous punctures on anterior and ventral part. Epicnemial carina weak, its dorsal end straight, ending at level of centre of pronotum. Metapleuron smooth and shiny, glabrous, except for some very sparse setiferous punctures at posterior part, 2.6–2.85× as long as high. Submetapleural carina absent. Propodeum smooth and shiny, with evenly sparse fine setiferous punctures on anterior half and laterally, in dorsal view 1.14–1.61× as long as medially wide. Propodeal spiracle 0.12–0.15 the length to anterior end of pleural carina. Hind leg with femur 3.95–4.53× as long as high, 1.06–1.13× as long as tibia. Fore wing with vein cu-a opposite to Rs & M; vein 2 rs-m 0.43–0.90× as long as abscissa of M between 2 rs-m and 2 m-cu; abscissa of Cu 1 between 1 m-cu and Cu 1 a 1.25–1.85× as long as Cu 1 b. Hind wing with vein cu-a 0.18–0.45× as long as first abscissa of Cu 1 between M and cu-a, sometimes veins cu-a and abscissa of Cu 1 forming a single straight vein; vein cu-a reclivous, first abscissa of Cu 1 vertical and straight; distal abscissa of Cu 1 weakly to strongly pigmented.

Metasoma ( Figs 39A–B, 39G–H, 39J–K ). Tergite I 1.50–1.77× as long as posteriorly broad, shiny, with sparse setiferous punctures laterally and posteriorly; spiracle near its anterior 0.4; lateromedian longitudinal carinae present at anterior 0.2 of tergite, very weak; lateral longitudinal carinae present at posterior 0.2 of tergite. Sternite I extending posteriorly about 0.5 of length of tergite. Tergite II 1.10–1.40× as long as posteriorly broad, with dense and relatively shallow setiferous punctures, distance between punctures at most its diameter; punctation of posterior tergites tending to be shallower and sparser. Ovipositor moderately stout and strongly up-curved at distal 0.35, 2.0–2.3× as long as hind tibia. Ovipositor sheath 1.65–1.8× as long as hind tibia, ventral margin basally with small denticles, length of setae on average 1.5–2.2× the sheath basal width.

Colouration ( Fig. 39 ). Head white cream with apex of mandibles, sides of clypeal suture, narrow longitudinal stripe at middle of face, frons and vertex medially, sometimes genal orbits medially in smaller specimens, posterior part of gena, and occipital region, black; white cream genal orbits with dorsal part much more narrow than ventral part; antenna blackish brown, basal flagellomeres ventrolaterally, pedicel and scape ventrally, white cream. Mesosoma white cream, orange and black; mesoscutum, mesosternum and a longitudinal mark below subalar prominence, orange; propleuron, dorsal and ventral lateral bands on pronotum, two longitudinal stripes on mesoscutum interrupted by notauli, tegula, subalar prominence, scutellum dorsally, postscutellum, mesopleuron extensively, mesepimeron, lateral parts of propodeum, and dorsal part of metapleuron white cream; median lateral part of pronotum, spot between subalar prominence and tegula, axillae, anterior and posterior margins and medial part of propodeum, groove separating propodeum and metapleuron, and ventral part of metapleuron black. Metasoma with tergite I black, with lateral and posterior margins marked with white; tergites II to VIII varying from reddish orange to blackish brown, tergites II–III black marked posterolaterally; ovipositor reddish brown; ovipositor sheaths black. Front and mid legs predominantly white cream, trochanters proximally black, femora and tibiae dorsally striped with black and tarsi infuscate; hind leg white cream with coxa laterally, trochanter proximally, femur laterally and proximally, and tibia basally and subdistally, black; hind tarsal segments predominantly blackish. Wings hyaline, pterostigma blackish brown.

Male: Body length about 10 mm. Fore wing length about 6.2 mm.

Head ( Figs 40A–D ). Gena in dorsal view straight, in frontal view with a slightly impressed concavity posteriorly to mandibular base. Clypeus, with ventral margin straight. Antenna with 27+ flagellomeres, first flagellomere 5.6× as long as wide.

Mesosoma ( Figs 40A, 40C–D, 40F–G, 40I ). Hind leg with femur about 4.73× as long as high, 0.87× as long as tibia. Hind wing vein cu-a and abscissa of Cu 1 forming a single straight vein, slightly reclivous; distal abscissa of Cu 1 absent.

Metasoma ( Figs 40E, 40H ). Tergite I 1.9× as long as posteriorly broad, spiracle near its anterior 0.3. Tergite II about 1.65× as long as posteriorly broad.

Colouration ( Fig. 40 ). As in female but tergites II–III black banded posteriorly and tergites IV-V with posterolateral black spots.

Other features as in female.

Etymology. The specific name refers to the Nasa indigenous ethnic group, original inhabitants of the area to which the type locality belongs.

Type material (13 ♀♀, 1 ♂). Holotype. Colombia: 1 ♀, Huila, PNN Cueva de los Guácharos, Cabaña Cedros , 1 º 38'N, 76 º 6'W, 2100 m, 10–21-XI-2001, malaise trap, C. Cortés ( IAvH) . Paratypes. Colombia: 1 ♀, Bogota, Lindig S., 20004 ( MfN) ; 1 ♀, Risaralda, PNN Otún Quimbaya, Cuchilla Camino , 4º44’N, 75º35’W, 2050 m, 17-XII-2002 / 3-I-2003, malaise trap, R. Walter ( IAvH) ; 1 ♀, Risaralda, PNN Otún Quimbaya, Urapanera , 4º44’N 75º35’W, 1960 m, 20-XII-2002 / 3-I-2003, malaise trap, R. Walter ( IAvH) ; 1 ♀, Valle, PNN Farallones de Cali, Los Andes , vda Quebradahonda , 3 º 26'N, 76 º 48'W, 1730 m, 25-XI-1998, W. Alfonso ( IAvH) ; 2 ♀♀, Valle, PNN Farallones de Cali, Los Andes , cgto La Meseta , 3 º 26'N, 76 º 48'W, 1960 m, 27-VIII/ 10-IX-2003, malaise trap, S. Sarria ( IAvH) ; 1 ♀, same locality, collector and trap type, 24-XII-2003 / 27-I-2004 ( IAvH) ; 1 ♀, Cundinamarca, Chipaque, vda Marilandia , 4 o 25'N, 74 o 5'W, 3013 m, 22-III/ 8-IV-2005, malaise trap, C. Castillo ( ICH-MHN) ; 2 ♀♀, Narino, Ricaurte, RNP La Planada , 1 o 15'N, 78 o 15'W, 1800 m, 24-VIII-1995, C. Saravia ( MJHN) . Ecuador: 1 ♀, Baños , 2200m, 3-V-1939, W. Clarke & MacIntyre ( EMUS) ; 1 ♂, same locality and collector, 2000m, 25-V-1937 ( EMUS) ; 1 ♀, Imbabura, Chachimbiro , 2000m, 20-VI-1987, M. Cooper, M. Cooper Coll., BMNH(E) 2005-152 ( NHMUK) .

Distribution. Colombia, Ecuador ( Fig. 51A , Appendix I).

Figures

FIGURE 39. Clistopyga nasa sp. nov., female (paratype): (A) habitus (lateral view, paratype); (B) base of ovipositor sheaths (paratype, denticles, arrow); (C) head (frontal view, holotype); (D, E) epomia (lateral view, paratypes); (F) head and mesosoma (lateral view, holotype); (G) metasoma (lateral view, holotype); (H) ovipositor (lateral view, holotype); (I) head and mesosoma (dorsal view, holotype); (J) metasoma (dorsal view, holotype); (K) tergite I and II (dorsal view, holotype). Scale bar: 2 mm (A); 1 mm (F, G, H, I, J); 0.5 mm (K); 0.3 mm (B, C, D, E).

FIGURE 40. Clistopyga nasa sp. nov., male (paratype): (A) habitus (lateral view); (B) head (frontal view; slightly impressed concavity of gena, arrow); (C) head and mesosoma (lateral view); (D) head and pronotum (lateral view, slightly impressed concavity of gena, arrow); (E) metasoma (lateral view); (F) propodeum and metapleuron (lateral view); (G) fore wing; (H) metasoma (dorsal view); (I)) hind wing. Scale bar: 1 mm (A, E, H); 0.5 mm (C); 0.3 mm (D, F, G, I); 0.2 mm (B).

FIGURE 51. Geographic distribution of C. calixtoi species group: (A) C. nasa sp. nov., C. nubiphila sp. nov.; (B) C. carvajali Gauld, Ugalde & Hanson, C. meridae sp, nov., C. stanfordi Gauld.