Dicopus, Enock, 1909

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 : 153

DICOPUS Enock, 1909

( Figs 370–379 )

Dicopus Enock, 1909: 455 . Type species: Dicopus minutissimus Enock, 1909 , by monotypy.

Kubja Subba Rao, 1984: 251 . Type species: Kubja longipes Subba Rao, 1984 , by monotypy. Synonymy by Huber, 2009: 235.

Diagnosis. Body length 220–415 μm. Antenna 7-segmented with fu 2 slightly shorter to or longer than fu 1 ( Figs 370 , 375 ); mandible when closed pointing ventrally ( Figs 370 , 371–374 ), with one short and one long tooth ( Fig. 371 ); vertex posteriorly separated from occiput by a medially divided postorbital trabecula ( Figs 372–374 ) (the latter showing trabecula partly unrolled); fore wing extremely narrow, the narrowest point about one venation length distal to venation, before distinctly widening to apex ( Fig. 379 ); hind wing also narrow for about 4 venation lengths beyond hamuli then becoming uniformly wider to apex ( Figs 370 , 379 ).

Discussion. Dicopus belongs to the Alaptus group of genera, together with Alaptus , Callodicopus , Dicopomorpha , and Litus . It is most similar to Dicopomorpha in having the funicle 7-segmented and fore wing very narrow but with a distinct lobe behind the venation.

Nearctic hosts. Unknown. An extralimital host is Psocoptera: Liposcelididae .

Important reference. Doutt (1974).

Figures

FIGURE 370. Dicopus sp., habitus. USA, Texas, Robertson Co., 8 mi. E. Hearne, Hallmark property, 13–22.x.1990, M. Hallmark, L. Masner. Scale bar=500 μm.

FIGURES 371–375. Dicopus sp. 371, head, anterior; 372, head, posterior; 373, head, dorsal (and slightly posterolateral); 374, head, posterior, different specimen showing partly unrolled vertexal trabecula; 375, antenna. Scale bars=100 μm.

FIGURES 376, 377. Dicopus sp., mesosoma + metasoma, dorsal. 376a, female; 376b, female showing genitalia; 377a, male (mesosoma damaged, partly missing); 377b, male showing genitalia. Scale bars=100 μm.

FIGURES 378, 379. Dicopus sp. 378, male body + coxae (left procoxa and part of propleuron missing), lateral; 379, wings. Scale bars: 378=100 μm; 379=200 μm.