Trachyusa Ruthe

Yao, Junli, Kula, Robert R. & Chen, Jiahua, 2015, A new species in the newly recorded genus Trachyusa (Hymenoptera: Braconidae: Alysiinae) from China, Zootaxa 3931 (4), pp. 579-584 : 580

Trachyusa Ruthe

Trachyusa Ruthe, 1854: 351 . Type species: Trachyusa nigriceps Ruthe, 1854: 352 (monobasic and original designation). Cosmiocarpa Förster, 1862: 264. Type species: Alysia aurora Haliday, 1838: 217 . Synonymized by Reinhard in Taschenberg (1866: 90) by transfer of type species, but synonymy already indicated by Förster (1862: 283).

Diagnosis. Antenna not widened, with 26–28 flagellomeres, first flagellomere slightly longer than second ( Fig. 2 ); maxillary and labial palpi with 6 and 4 palpomeres, respectively; eyes glabrous ( Fig. 3 ); ventral margin of clypeus convex ( Fig. 3 ); anterior tentorial pits medium-sized ( Fig. 3 ); third tooth of mandible without ventral protuberance ( Fig. 5 ), upper margin of second tooth with orthogonal protuberance, base of mandible with very long pubescence ( Fig. 5 ); pronope absent ( Fig. 4 ); notauli wide and long, with medio-longitudinal midpit posteriorly ( Figs 4 , 7 ); sternaulus present medially ( Fig. 6 ); metanotum protruding dorsally ( Fig. 6 ); vein 2RS of fore wing longer than vein 3RSa ( Fig. 1 ); vein 1m-cu of fore wing (sub)interstitial ( Fig. 1 ); vein 2cu-a of fore wing absent, first subdiscal cell open ( Fig. 1 ); pterostigma of female elliptical ( Fig. 1 ); veins cu-a of hind wing and (RS+M)a of fore wing present ( Fig. 1 ); vein M+CU of hind wing subequal to vein 1M or shorter ( Fig. 1 ); tarsal claws medium-sized, simple and without lobe; dorsope of first metasomal tergum absent ( Fig. 8 ); second metasomal tergum and basal half of third granulate ( Fig. 8 ); second and third metasomal terga with sharp lateral crease ( Fig. 9 ); ovipositor sheath short, slightly protruding beyond apex of metasoma, setose ( Fig. 9 ); ovipositor slender, without notch and somewhat curved ventrad.

Distribution. Palaearctic ( Yu et al. 2012).

Biology. Unknown.

Figures

FIGURES 1 – 6. Trachyusa whartoni Ya o, sp. nov. 1. Lateral habitus. 2. Head and antennae, lateral view. 3. Head, anterior view. 4. Head and mesoscutum, dorsal view. 5. Head, lateral view. 6. Head and mesosoma, lateral view.

FIGURES 7 – 10. Trachyusa whartoni Yao, sp. nov. 7. Mesosoma, dorsal view. 8. Metasoma, dorsal view. 9. Metasoma, lateral view. 10. Meso- and metathoracic legs, lateral view.