Clistopyga aurantia Bordera & Palacio, 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 : 25-27

6. Clistopyga aurantia Bordera & Palacio , sp. nov.

( Figs 10 , 50A , Appendix I)

Diagnosis. Clistopyga aurantia may be easily distinguished from all other species of the C. calixtoi species group by the following combination of characters: genal orbit usually interrupted by dark brown or black ( Figs 10C–D ); mesosoma almost entirely orange ( Figs 10A,10D–E, 10G ); metasoma with posterior well defined white cream wide bands on tergites I–V ( Figs 10A, 10F, 10H ); hypostomal carina not lamelliform posteriorly to mandible; epomia weak and short, vertical.

Description. Female: Body length about 8.4 mm. Fore wing length about 6 mm.

Head ( Figs 10A–D ). In dorsal view, strongly narrowed behind eyes. Gena shiny with very sparse setiferous punctures, in dorsal view almost straight, about 0.3× as long as eye, in frontal view moderately constricted below eyes, slightly concave. Frons and vertex smooth and shiny, with very isolated setiferous punctures. Posterior ocellus separated from eye 1.15–1.2× its maximum diameter. Distance between hind ocelli about 0.9× maximum diameter of posterior ocellus. Hypostomal carina not lamelliform behind mandible. Face with shallow, very fine and sparse setiferous punctures, distance between them more than 3× its diameter. Clypeal suture moderately curved. Clypeus about 1.75× as broad as medially long, weakly convex with very few punctures dorsally, slightly concave and smooth ventrally, ventral margin straight. Malar space about 0.8× as long as basal mandibular width, with a smooth narrow subocular sulcus. Antenna with 28 flagellomeres, first flagellomere 5.7× as long as medially wide.

Mesosoma ( Figs 10A, 10C–E, 10G, 10J–K ). Pronotum smooth and shiny with very few setiferous punctures on posterior corner. Epomia weak and short, vertical. Mesoscutum smooth and shiny, with isolated very fine setiferous punctures on mid lobe; lateral lobes almost glabrous; 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 very sparse small setiferous punctures on anterior and ventral part. Epicnemial carina weak, its dorsal end straight, ending at level of ventral third of pronotum. Metapleuron smooth and shiny, glabrous, about 3.0× as long as high. Submetapleural carina absent. Propodeum smooth and shiny with very sparse and isolated fine setiferous punctures, in dorsal view about 1.35× as long as medially wide. Propodeal spiracle about 0.11 the length to anterior end of pleural carina. Hind leg with femur 3.30–3.35× as long as high, about 1.0× as long as tibia. Fore wing with vein cu-a opposite to Rs & M; vein 2 rs-m about 0.6× 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 1.2× as long as Cu 1 b. Hind wing with vein cu-a + abscissa of Cu 1 between M and cu-a not angled, slightly curved, reclival; distal abscissa of Cu 1 absent.

Metasoma ( Figs 10A, 10 F, 10H–I ). Tergite I 1.9× as long as posteriorly broad, shiny, with sparse and very shallow setiferous punctures, spiracle near its anterior 0.3; lateromedian longitudinal carinae and lateral longitudinal carinae strong at anterior 0.2 of tergite. Sternite I extending posteriorly 0.65 the length of tergite. Tergite II 1.45× as long as posteriorly broad, with very shallow and moderately dense setiferous punctures, distance between punctures at least its diameter; punctation of posterior tergites tending to be denser. Ovipositor gently and evenly up-curved at posterior 0.4, about 2.25× as long as hind tibia. Ovipositor sheath 1.95× as long as hind tibia, ventral margin basally without denticles, length of setae on average 1.85× the sheath basal width.

Colouration ( Fig. 10 ). Head mostly white cream, with apex of mandibles, frons and vertex medially, dorsal half of gena and occipital region, black; antenna brown, scapus, pedicel, annellus and first and second flagellomeres, ventrally whitish. Mesosoma mostly orange; posterior part of propleuron and posterior rim of propodeum black; anterior part of propleuron, anterior ventral part of pronotum, two small spots on anterior dorsal part of pronotum joining margin of mid lobe of mesoscutum, and a lateral posterior small spot on propodeum, as a hue, white cream. Metasoma mostly dark brown; posterior lateral spots on tergites II–V black. Anterior lateral spot on tergites IV and posterior dorsal band on tergites I–V white cream; ovipositor dark brown; ovipositor sheaths black. Legs predominantly white cream; front leg with dorsal stripe on femur, interrupted dorsal and ventral stripes on tibia and distal part of tarsi, brown; mid leg with base of trochanter, dorsal stripe on femur, interrupted dorsal and ventral stripes on tibia tibia and distal part of tarsi brown; hind leg with lateral spots on coxa, base of trochanter, base and anterior subdistal spot and posterior stripe on femur, basal and distal part of tibia, and distal part of tarsi, brown. Wings hyaline, pterostigma blackish brown.

Male: Unknown.

Etymology. The specific epithet, aurantia , comes from the Latin “ aurantius ” (orange-coloured), which is a derivation of “ auratus ” (golden) and refers to the orange colour of its mesosoma.

Type material ( 1 ♀). Holotype. Costa Rica: 1 ♀, Cartago, Braulio Carrillo N.P., 400m, 10–11-IV-1985, Henri Goulet ( EMUS).

Distribution. Costa Rica ( Fig. 50A , Appendix I).

Figures

FIGURE 10. Clistopyga aurantia sp. nov., female (holotype): (A) habitus (lateral view); (B) head (frontal view); (C) head and mesoscutum (dorsal view); (D) head and mesosoma (lateral view); (E) mesosoma (dorsal view); (F) metasoma (dorsal view); (G) metapleuron and propodeum (lateral view); (H) metasoma (lateral view); (I) ovipositor (lateral view); (J) fore wing; (K) hind wing. Scale bar: 1 mm (A, F, H); 0.5 mm (D-E, I-K); 0.3 mm (C, G); 0.2 mm (B).

FIGURE 50. Geographic distribution of C. calixtoi species group: (A) C. aurantia sp. nov., C. fernandezi Gauld, C. maya Gonzalez-Moreno & Bordera, C. oaxacana Gonzalez-Moreno & Bordera; (B) C. calixtoi Gauld, C. moraviae Gauld, Ugalde & Hanson.