Trachyusa Ruthe 1854

Trachyusa Ruthe, 1854 Figs 9–16 Trachyusa Ruthe, 1854: 351; Shenefelt 1974: 1027–1028; van Achterberg & O’Connor 1990: 107; Belokobylskij 1998: 294; Yao et al. 2015: 580. Type-species: Trachyusa nigriceps Ruthe, 1854 (by monotypy). Cosmiocarpa Foerster, 1863: 264. Type-species: Alysia aurora Haliday, 1838 (by original designation). Synonymized by Reinhard & Taschenberg (1866: 90) by transfer of type-species, but synonymy already indicated by Foerster (1863: 283). Diagnosis. first flagellomere (including annellus) longer than second flagellomere, and usually not widened (Figs 10H, 12H, 14H, 16G); clypeus medium-sized and semicircular (Figs 10J, 12J, 14J, 16H); face rather evenly convex (Figs 10J, 12J, 14J, 16H); eyes glabrous; mandible slender, middle tooth medium-sized and acute, distinctly longer than lateral teeth (Figs 10J, 12J, 14J, 16H); maxillary palp with 6 segments; pronope round and deep (Figs 10I, 12I, 14I, 16I); precoxal sulcus present medially (Figs 10C, 12C, 14C, 16B); vein 2-SR of fore wing longer than vein 3-SR and vein r of fore wing emitted near middle of pterostigma (Figs 10A, 12A, 14A, 16A), pterostigma of male (compared to pterostigma of female) enlarged (van Achterberg & O’Connor 1990); vein M+CU of hind wing subequal to vein 1M or shorter (Figs 10B, 12B, 14B, 16A); propodeum usually densely and coarsely reticulate-rugose (Figs 10E, 12E, 14E, 16D); second and basal half of third metasomal tergite granulate (Figs 10F, 12F, 14F, 16E); dorsope absent (Fig. 10F, 12E, 14E, 16E); ovipositor sheath short, more or less widened subapically, and slightly protruding beyond apex of metasoma (Figs 10G, 12G, 14G, 16F). Biology. Unknown. Distribution. Palaearctic and North Oriental (Yu et al. 2016).