Clistopyga isayae

Palacio, Edgard, Bordera, Santiago, Sääksjärvi, Ilari E. & Díaz, Francisco, 2018, The Neotropical species of Clistopyga (Hymenoptera, Ichneumonidae, Pimplinae). Part II: the C. isayae species group, with the description of seven new species, Zootaxa 4442 (1), pp. 101-121: 102

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Clistopyga isayae


The Clistopyga isayae  species-group

Diagnosis. Clypeus distinctly convex in dorsal half, flat in ventral half, with apical margin bilobed ( Figs 2A View Figure , 3A View Figure , 4B View Figure , 5B View Figure , 6B View Figure , 7B View Figure , 8B View Figure ). Gena in anterior view slightly rounded or almost straight and moderately constricted below eyes. Occipital carina completely absent, widely interrupted laterally ( Fig. 11D, E View Figure ), or present only ventrally as a short vestige. Occiput in dorsal view slightly concave. Malar space 0.6–1.1 × as long as basal mandibular width. Antenna with 24–27 flagellomeres, first flagellomere 5.9–7.3 × as long as wide. Epomia strong but short. Posterior part of median lobe of mesoscutum not prominent. Metapleuron 2.4–2.9 × as long as deep. Propodeum without lateromedian longitudinal carina, 1.2–1.5× as long as medially wide in dorsal view. Submetapleural carina completely absent. Hind leg with femur 3.9–4.6 × as long as deep and 0.8–1.1 × as long as tibia. Sternite I of metasoma extending back about 0.4–0.6 of length of tergite. Ovipositor slender to stout, 2.6–3.3 × as long as hind tibia: shaft weakly upcurved at apical 0.3–0.5, not denticulate in basal 0.35, with isolated, coarse transverse wrinkles; upper valve with apex blunt, not tapered, slightly to distinctly thickened ( Figs 1A, B View Figure , 4F View Figure , 5F View Figure , 6F View Figure , 7F View Figure , 8F View Figure ), and with fine longitudinal rugulae. Ovipositor sheath 1.9–2.5 × as long as hind tibia, with numerous denticles at basal ventral margin ( Figs 11F–G View Figure ). Female fore leg with tibia unspecialized, not swollen. Male gena without longitudinal concavity in ventral part ( Fig. 10A View Figure ) (the male is currently known only for one species).

Remarks. The C. isayae  species group appears to be restricted to tropical South America and most of the species are found at mid and high altitudes in Andean forests, between 1200–3000m. Seven species are known from Colombia, Peru and Venezuela, but it is possible that there are several new species waiting to be discovered especially in the tropical Andean forests of northern South America.