Gahanopsis, Ogloblin, 1946

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 : 70

GAHANOPSIS Ogloblin, 1946

( Figs 136–140 )

Gahanopsis Ogloblin, 1946: 286 (as subgenus of Lymaenon ). Type species: Lymaenon (Gahanopsis) deficiens Ogloblin, 1946 , by original designation. Synonymy under Gonatocerus by Triapitsyn et al., 2010: 11 and treated as subgenus; given generic status by Huber, 2015a: 21 .

Diagnosis. Occiput with transoccipital sulcus complete, extending from below each eye to dorsal margin of foramen ( Fig. 136 ); propodeum divided medially by a vertical longitudinal sulcus then diverging laterally along posterior margin of metanotum and separating the two sclerites by a distinct gap almost as far as spiracle ( Fig. 139 ); metasoma anteriorly usually closely appressed against mesosoma so petiole often hidden; ovipositor and sheaths projecting anteriorly in narrow gastral sac ventral to the mesosoma ( Fig. 140b ) almost as far as level of head.

Remarks. Gahanopsis belongs to the Gonatocerus group of genera. Gastrogonatocerus is the only other genus of Gonatocerini with the petiole projecting anteriorly under the mesosoma but the gastral sac is much slenderer in Gahanopsis . Gahanopsis has a distinctly different propodeal structure.

Neotropical hosts. Hemiptera .

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

Figures

FIGURES 136–138. Gahanopsis. 136a, head, anterior; 136b, head, posterior; 137, antenna; 138, wings.

FIGURES 139, 140. Gahanopsis. 139, mesosoma, dorsal; 140a, metasoma, dorsal; 140b, metasoma, ventral.