Aclastus Förster

Bordera, Santiago & Mazon, Marina, 2015, Description of a new species of Aclastus Förster (Hymenoptera: Ichneumonidae: Cryptinae) from the Peruvian Andes, with dimorphic females, Zootaxa 3955 (3), pp. 340-348 : 342

Aclastus Förster

Aclastus can be distinguished from other Hemitelina by the following features in combination: clypeus narrow and strongly convex ( Fig. 2 A); mandibles twisted inward, in frontal view only upper tooth is visible ( Fig. 2 A); mesoscutum smooth and shiny ( Figs 4 A–B), vein 3 rs-m absent ( Fig. 5 A), vein 2 m-cu with one bulla or sometimes not pigmented (e.g. in A. solutus ), vein Cu 1 of hind wing absent ( Figs 5 A–B); area superomedia of propodeum hexagonal, often wider than long, receiving costula a little in front of the middle ( Figs 4 E–F); tergites II and III not fused ( Fig. 5 E–F); and apex of ovipositor elongate without distinct nodus ( Fig. 2 C).

Figures

FIGURE 2. Morphology of Aclastus mantaricus sp. nov.: A—face in frontal view; B—flagellum; C—ovipositor.

FIGURE 4. Morphology of Aclastus mantaricus sp. nov. A, C, E: winged female: A—head and mesoscutum, dorsal view; Cmesosoma, lateral view; E—propodeum and first metasomal tergite, dorsal view. B, D, F: brachypterous female: B—head and mesoscutum in dorsal view; D—mesosoma, lateral view; F—propodeum and first metasomal tergite in dorsal view.

FIGURE 5. Morphology of Aclastus mantaricus sp. nov. A, C, E: winged female: A—wings; C—first metasomal tergite in lateral view; E—metasoma, dorsal view. B, D, F: brachypterous female: B—wings; D—first metasomal tergite, lateral view; F—metasoma, dorsal view.