Blacus (Ganychorus) fuscifemur, Lu & Chai & Achterberg & Tang & Chen, 2025

Lu, Qian-Yu, Chai, Hong-Fei, Achterberg, Cornelis Van, Tang, Pu & Chen, Xue-Xin, 2025, The first review of the subgenus Ganychorus Haliday, 1835 (Hymenoptera, Braconidae, Brachistinae) in China, Zootaxa 5575 (2), pp. 201-250 : 217-219

Blacus (Ganychorus) fuscifemur sp. nov.

( Figs 13–14 )

Material examined. Holotype: ♀, China, Yunnan, Bao Mtn, Lujiangba, Gaoligong Mtn Nature Park , 11.V.2009, Wang Manman, No. 200904561 ( ZJUH) . Paratypes: 9♀♀, China, Yunnan, Bao Mtn, Lujiangba, Gaoligong Mtn Nature Park , 10–11.V.2009, Zeng Jie, Nos. 200902975, 200902976, 200902978; 10.V.2009, Wang Manman, No. 200904544; 11.V.2009, Wang Manman, Nos. 200904571, 200904575; Gaoligong Mtn Reserve , 20–21.VII.2006, Zeng Jie, No. 200907839; Yunnan, Tengchong, Datianpo Village, Tanchang River , 22.V.2009, Wang Manman, No. 200903057; Yunnan, Dehongzhou, Nabangzhen , 15.V.2009, Zeng Jie, No. 200904614; Yunnan, Gejiu, Lvchun, Fenshuiling , 25.VII.2003, No. 202024080 ; 1♀, Xizang, Yalu Tsangpo River, Grand Canyon , 12.VI.2009, Tan Jiangli, No. 200906265 ( ZJUH) .

Diagnosis. The new species is similar to B. (G.) tuberculifer van Achterberg, 1988 , because it has propodeal tubercles, precoxal sulcus complete, narrow and crenulate medially, first discal cell acute anteriorly, fore claws with blackish bristles, apical half hind femur and hind tibia dark brown and propodeum without areola, but differs by having narrow and nearly smooth occipital carina (wide and distinctly crenulate in B. (G.) tuberculifer ), middle claws simple (with blackish bristles), length of first tergite 2.0 × its apical width (1.6 ×), and length of ovipositor sheath approx. 0.3 × length of fore wing (0.14 ×).

Description. Female. Length of body 2.2 mm, length of fore wing 2.45 mm.

Head. Antennomeres 20 ( Fig. 14C ); length of first flagellomere 2.0 × length of second flagellomere; length of first, second and penultimate flagellomere 4.5, 2.25 and 1.5 × their width, respectively; length of maxillary palp approx. 1.2 × height of head; occipital carina complete, narrow and nearly smooth; frons densely setose, frons suture distinctly present; OOL: OD: POL = 5: 2: 3; length of eye in dorsal view 1.1 × length of temple; face smooth; malar suture present, length of malar space 1.5 × basal width of mandible.

Mesosoma. Length of mesosoma 1.4 × its height; side of pronotum smooth dorsally, rugose ventrally; mesopleuron smooth; precoxal sulcus complete, narrow and crenulate medially; notauli narrow and superficially rugose ( Fig. 14E ); mesoscutal lobes densely setose; scutellum smooth, with transverse carinae near its lateral carina, distinctly protruding dorsally; propodeal tubercles present; propodeum rugose, medial area absent ( Fig. 14G ).

Wings. Fore wing: first discal cell acute anteriorly; 1-CU1: 2-CU1 = 2: 3 ( Fig. 14H ).

Legs. Hind coxa nearly smooth; length of femur, tibia and basitarsus of hind leg 5.6, 11.0 and 7.7 × their width, respectively; fore claws with blackish bristles, middle and hind claws simple ( Figs 14J, 14K ).

Metasoma. Length of first tergite 2.0 × its apical width, widened apically, rugose ( Fig. 14F ); second tergite smooth except some puncture near setae; length of ovipositor sheath 0.33 × length of fore wing.

Colour. Blackish brown; antenna brown, several subapical antennomeres whitish; clypeus, mandible, palpi, tegulae and all legs (but apical half hind femur, hind tibia and telotarsi blackish brown) yellow; pterostigma, parastigma, veins, ovipositor and sheath brown; wing membrane subhyaline.

Variation. Length of first tergite 2.1–2.2 × its apical width, antennomeres 19–20, wing membrane subhyaline, at most slightly infuscated.

Male. Unknown.

Biology. Unknown.

Distribution. China (Yunnan, Xizang).

Etymology. The specific name fuscifemur refers to the brown hind femur and is derived from “ fuscus ” (Latin for dusky) and “ femur ” (Latin for thigh).

Figures

FIGURE 13. Ganychorus fuscifemur sp. nov. (body, lateral aspect).

FIGURE 14. Ganychorus fuscifemur sp. nov. A. head, dorsal aspect; B. head, anterior aspect; C. antenna; D. mesosoma, lateral aspect; E. mesosoma, dorsal aspect; F. first metasomal tergite, dorsal aspect; G. propodeum, dorsal aspect; H. wings; I. second metasomal tergite, dorsal aspect; J. hind leg; K. middle claw; L. ovipositor and ovipositor sheath.