Gastrogonatocerus, Ogloblin, 1935

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2024, Illustrated key to the genera and catalogue of Mymaridae (Hymenoptera) in the Neotropical region, Zootaxa 5557 (1), pp. 1-263 : 72

GASTROGONATOCERUS Ogloblin, 1935

( Figs 141–146 )

Gastrogonatocerus Ogloblin, 1935c: 66 (as subgenus of Gonatocerus ). Type species: Gastrogonatocerus membraciphagus Ogloblin, 1935 , by original designation.

Diagnosis. Back of head with transorbital sulcus complete, extending from ventral margin of each eye to dorsal margin of foramen, thus separating occiput from gena ( Fig. 141b ); dorsellum rhomboidal, with posterior margin evenly convex ( Fig. 144 ); fore wing with microtrichia mostly absent posterior to and just distal to venation ( Fig. 143 ), thereafter fairly uniformly but often sparsely distributed; propodeum medially and submedially with 2 or 3 fine and faint longitudinal carinae between submedian carinae (when present) and propodeal spiracle often huge ( Fig. 144 ); ovipositor and sheaths almost always extending anteriorly in wide gastral sac ventral to mesosoma ( Fig. 145 ), exceptionally not extending anterior to gaster ( Fig. 146b ).

Remarks. Gastrogonatocerus belongs to the Gonatocerus group of genera. Gastrogonatocerus is most similar to Gahanopsis . Both have a complete transoccipital sulcus, and an anteriorly projecting gastral sac. The gastral sac is much narrower and usually projects farther anteriorly than in Gahanopsis , and the shape of the dorsellum and the propodeal carinae are different from Gastrogonatocerus .

Neotropical hosts. Hemiptera .

Important reference s. Triapitsyn et al. (2010), Huber (2015a).

Figures

FIGURE 146. Gastrogonatocerus. 146a, metasoma, dorsal; 146b, metasoma, ventral.

FIGURES 141–143. Gastrogonatocerus. 141a, head, anterior; 141b, head, posterior; 142, antenna; 143, wings.

FIGURES 144, 145. Gastrogonatocerus. 144, mesosoma, dorsal; 145, metasoma, lateral.