Nesolinoceras Ashmead, 1906

Supeleto, Fernanda A., Aguiar, Alexandre P. & Santos, Bernardo F., 2021, A new species, key and further redefinition of Nesolinoceras Ashmead (Hymenoptera, Ichneumonidae, Cryptinae), Zootaxa 5016 (1), pp. 107-116 : 112

Key to species of Nesolinoceras Ashmead

The extended content of each dichotomy is meant to work also as an independent diagnosis for the respective species. The key will work for both sexes, but it does not include the species inquirenda of Santos (2016).

1. Mesosoma and metasoma with distinct whitish marks; ovipositor moderately long, OST 1.0–1.2; anterior transverse carina of propodeum complete; occipital carina apically fading before meeting hypostomal carina; clypeal margin weakly emarginate on each side, not m-shaped in frontal view; MLW, 1.6–1.7, MWW 0.5–0.6, MSM 0.6–0.7; crossvein 3r-m mostly to entirely spectral; T1 short and triangular, T1LW 1.4–1.5; hind wing hyaline, apically infuscate; propodeum in dorsal view 1.0-1.1× as long as wide; median portion of postpectal carina short and straight or represented by a vestigial, suture-like ridge; epomia indistinct .................................................................................................... 2

- Mesosoma and metasoma without whitish marks ( Fig. 1 ); ovipositor very long, OST 1.65; anterior transverse carina of propodeum briefly interrupted medially ( Fig. 3C ); occipital carina reaching hypostomal carina ( Fig. 2C ); clypeal margin distinctly emarginate on each side ( Fig. 2B ), m-shaped in frontal view ( Fig. 2A ); MLW 1.2, MWW 0.3, MSM 0.4; crossvein 3r-m on anterior 0.65 spectral; T1 anteriorly to spiracle narrowed, then trapezoidal, wide, T1LW 1.81; hind wing lightly infuscate, apically slightly darker; propodeum in dorsal view 0.8× as long as wide; median portion of postpectal carina entirely absent; epomia very short but distinct ( Fig. 2D )................................................... Nesolinoceras bajari sp. nov.

2 (1). Posterior area of propodeum without sublateral whitish marks; clypeus in front view somewhat semicircular, apex much wider than base, CWW 1.8–2.0; central ocellus distinctly larger than lateral ones; areolet much longer than wide, AWH 0.7; crossveins 2r-m and 3r-m distinctly convergent, almost meeting on anterior apex of areolet; notauli posteriorly distinctly convergent, almost meeting on posterior apex; epicnemial carina almost reaching subalar ridge but much weaker, almost indistinct on dorsal 0.3; metapleuron entirely rugulose; surface over sternaulus distinctly wrinkled; ventral tooth of mandible apically uniformly tapered, somewhat pointy................................... Nesolinoceras ornatipennis ( Cresson, 1865)

- Posterior area of propodeum with distinct sublateral whitish marks; clypeus in front view almost rectangular, apex only slightly narrower than base, CWW 1.2–1.4; central ocellus about as large as lateral ones; areolet slightly longer than wide, AWH 0.9; crossveins 2r-m and 3r-m distinctly convergent, but far from meeting on anterior apex of areolet; notauli posteriorly slightly convergent; epicnemial carina reaching only 0.4 of distance to subalar ridge; metapleuron mostly punctate, centrally smooth; surface over sternaulus smooth; ventral tooth of mandible apically subquadratic....................................................................................................... Nesolinoceras laluzbrillante Santos, 2016

Figures

FIGURE 1. Nesolinoceras bajari sp. nov. Holotype female, habitus.

FIGURE 2. Nesolinoceras bajari sp. nov. Holotype female. A, Head, frontal view. B, Clypeus, vertical view. C, Occipital carina meeting hypostomal carina, right. D, Head, pronotum and mesopleuron in dorsal and dorso-lateral view. E, Tip of ovipositor, left. F, Fore wing, left, ventral view.

FIGURE 3. Nesolinoceras bajari sp. nov. Holotype female. A, Body in dorsal view, except appendages. B, Mesoscutum, dorsal. C, Propodeum, dorsal. D, Metapleuron and propodeum, left.