Trachyusa Ruthe, 1854

Zhu, Jiachen, Achterberg, Cornelis Van & Chen, Xuexin, 2025, A revision of five genera of Alysiini (Hymenoptera, Braconidae, Alysiinae) from China, with description of five new species, Zootaxa 5569 (3), pp. 401-438 : 412-413

publication ID	https://doi.org/10.11646/zootaxa.5569.3.1
publication LSID	lsid:zoobank.org:pub:2D59C36A-D41C-42B6-8380-FEB68A28DE9B
DOI	https://doi.org/10.5281/zenodo.14754710
persistent identifier	https://treatment.plazi.org/id/9A1887C1-FFED-FFB7-FF2F-3FED9A3A8954
treatment provided by	Plazi
scientific name	Trachyusa Ruthe, 1854
status

Treatment

Trachyusa Ruthe, 1854 View in CoL View at ENA

Figs 9–16 View FIGURE 9 View FIGURE 10 View FIGURE 11 View FIGURE 12 View FIGURE 13 View FIGURE 14 View FIGURE 15 View FIGURE 16

Trachyusa Ruthe, 1854: 351 View in CoL ; Shenefelt 1974: 1027–1028; van Achterberg & O’Connor 1990: 107; Belokobylskij 1998: 294; Yao et al. 2015: 580 View Cited Treatment .

Type-species: Trachyusa nigriceps Ruthe, 1854 View in CoL (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 View FIGURE 10 , 12H View FIGURE 12 , 14H View FIGURE 14 , 16G View FIGURE 16 ); clypeus medium-sized and semicircular ( Figs 10J View FIGURE 10 , 12J View FIGURE 12 , 14J View FIGURE 14 , 16H View FIGURE 16 ); face rather evenly convex ( Figs 10J View FIGURE 10 , 12J View FIGURE 12 , 14J View FIGURE 14 , 16H View FIGURE 16 ); eyes glabrous; mandible slender, middle tooth medium-sized and acute, distinctly longer than lateral teeth ( Figs 10J View FIGURE 10 , 12J View FIGURE 12 , 14J View FIGURE 14 , 16H View FIGURE 16 ); maxillary palp with 6 segments; pronope round and deep ( Figs 10I View FIGURE 10 , 12I View FIGURE 12 , 14I View FIGURE 14 , 16I View FIGURE 16 ); precoxal sulcus present medially ( Figs 10C View FIGURE 10 , 12C View FIGURE 12 , 14C View FIGURE 14 , 16B View FIGURE 16 ); vein 2-SR of fore wing longer than vein 3-SR and vein r of fore wing emitted near middle of pterostigma ( Figs 10A View FIGURE 10 , 12A View FIGURE 12 , 14A View FIGURE 14 , 16A View FIGURE 16 ), 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 View FIGURE 10 , 12B View FIGURE 12 , 14B View FIGURE 14 , 16A View FIGURE 16 ); propodeum usually densely and coarsely reticulate-rugose ( Figs 10E View FIGURE 10 , 12E View FIGURE 12 , 14E View FIGURE 14 , 16D View FIGURE 16 ); second and basal half of third metasomal tergite granulate ( Figs 10F View FIGURE 10 , 12F View FIGURE 12 , 14F View FIGURE 14 , 16E View FIGURE 16 ); dorsope absent ( Fig. 10F View FIGURE 10 , 12E View FIGURE 12 , 14E View FIGURE 14 , 16E View FIGURE 16 ); ovipositor sheath short, more or less widened subapically, and slightly protruding beyond apex of metasoma ( Figs 10G View FIGURE 10 , 12G View FIGURE 12 , 14G View FIGURE 14 , 16F View FIGURE 16 ).