Omyomymar, Schauff, 1983

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 : 256-257

OMYOMYMAR Schauff, 1983

( Figs 677–714 )

Omyomymar Schauff, 1983: 544 . Type species: Paranaphoidea silvana Ogloblin, 1935 , by original designation.

Caenomymar Yoshimoto, 1990: 49–50 . Type species: Caenomymar howdeni Yoshimoto , by monotypy. Synonymy by Aquino et al., 2016: 588.

Diagnosis. Body length 495–950 μm. Clava 2-segmented, the apical segment usually with a nipple-like projection ( Fig. 684 ); mandibles minute stubs with apices not overlapping or extending to each other when closed ( Fig. 678 ) ovipositor long and usually distinctly exserted posterior to apex of gaster ( Figs 677 , 689 , 690 ). Males are distinguished by the scape with inner surface covered in spine-like projections ( Fig. 685 ).

Discussion. The head is strongly sexual dimorphic in Omyomymar , unlike the remaining three genera with fe- male clava 2-segmented [ Anaphes (Patasson) , Schizophragma , Platystethynium (Platypatasson) ] but like Krokella , in which the male head, especially the gena, is relatively enlarged ( Figs 680 , 683 ) compared to the female ( Figs 678 , 682 ) and this difference even applies to the pronotum where the female pronotum ( Fig. 686 ) is much shorter than the male pronotum ( Fig. 691 ), though it is not certain that the two specimens are conspecific. The male eye is relatively much smaller than the female eye. The slightly indented mesophragma, light coloured base of the gaster, and apical two segments of the male flagellum widely joined suggest that Schizophragma may be the most similar genus, though the considerable difference in head size between male and female is similar to that in Krokella .

Important references. Schauff (1983), Lin & Chiappini (1996).

Figures

FIGURE 677. Omyomymar sp. habitus. Canada, Ontario, Hamilton, 31.viii–7.ix.1981, M. Sanborne. Scale bar=1000 μm.

FIGURES 678–681. Omyomymar sp., head. 678, female, anterior (vertex separated from face); 679, female, posterior, and vertex; 680, male, anterior; 681, male, posterior, and vertex. Scale bars=100 μm.

FIGURES 682, 683. Omyomymar sp., head. 682a, female, lateral; 682b, female, lateral (internal) showing ocular apodeme; 683a, male, lateral; 683b, male, lateral (internal) showing ocular apodeme. Scale bars=100 μm.

FIGURES 684–687. Omyomymar sp. 684, female antenna; 685, male antenna; 686, female mesosoma, dorsal; 687, female metasoma, lateral. Scale bars=100 μm.

FIGURES 688, 689. Omyomymar sp. 688, wings, 689a, metasoma, dorsal; 698b, ovipositor seen through gaster. Scale bars=200 μm.

FIGURES 690–692. Omyomymar sp. 690, metasoma, lateral; 691, male mesosoma, dorsal; 692a, male metasoma, lateral; 692b, genitalia, dorsal. Scale bars: 690–692a=100 μm; 692b=50 μm.

FIGURES 693–698. Omyomymar sp., female head. 693, anterior; 694, posterior; 695, lateral; 696, dorsal; 697, ventral; 698, mouthparts. Scale bars=50 μm.

FIGURES 699–703. Omyomymar sp., female mesosoma. 699, dorsal; 700, lateral; 701, ventral; 702, anterior; 703, scutellum–propodeum. Scale bars=100 μm.

FIGURES 704–708. Omyomymar sp., female metasoma. 704, dorsal; 705, lateral; 706, ventral; 707, apex of gaster, dorsal; 708, apex of gaster, lateral. Scale bars: 704–706=100 μm; 707, 708=20 μm.

FIGURES 709–714. Omyomymar sp., male. 709, head, ventral; 710, mouthparts; 711, apex of gaster, dorsal; 712, apex of gaster, lateral; 713, apex of gaster, posterior; 714, apex of gaster (most of genitalia), ventral. Scale bars=50 μm.