Cosmocomoidea, Howard, 1908

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2020, Illustrated key to genera and catalogue of Mymaridae (Hymenoptera) in America north of Mexico, Zootaxa 4773 (3), pp. 1-411 : 133-134

COSMOCOMOIDEA Howard, 1908

( Fig. 340 )

Cosmocomoidea Howard, 1908: 68 . Type species: Cosmocomoidea morrilli Howard, 1908 , by monotypy. Treated by various authors as a subgenus or synonym under Ooctonus , Lymaenon or Gonatocerus but given generic status by Huber (2015a).

Diagnosis. Body length 615–2075 μm. Antenna with funicle 8-segmented; tarsi 5-segmented; funicle with fu 2 and fu 3 not the longest segments; ocellar triangle with 2 setae between lateral ocelli; pronotal lobes abutting medially; dorsellum rhomboidal; fore wing relatively wide with few or no microtrichiae behind venation; stigmal vein with apex oblique; propodeum with 2 submedian carinae.

Discussion. Four genera in the Nearctic ( Cosmocomoidea , Gastrogonatocerus, Gonatocerus , and Lymaenon ) share the following combination of features: tarsi 5-segmented, funicle 8-segmented, face with subantennal sulci, and parastigma with hypochaeta about midway between proximal and distal macrochaetae ( Huber 2015a). Among these, Cosmocomoidea is most similar to Gonatocerus , which has narrower fore wings, fu 2 and fu 3 usually the longest segments, and propodeum without carinae or, at most, a trace of them.

Nearctic hosts. Hemiptera : Cicadellidae .

Important references. Huber (1988, 2015a), Triapitsyn (2006, 2013a, b), Triapitsyn et al. (2010).

Figures

FIGURE 340. Cosmocomoidea capitata (Gahan), habitus. USA, Oregon (locality, date and collector not recorded, USNM specimen). Scale bar=500 μm.