Blacus (Tarpheion) tanae Lu & Chai & Achterberg & Tang & Chen 2024, sp. nov.
Creators: name: Lu, Qian-Yu
name: Chai, Hong-Fei
name: Achterberg, Cornelis Van
name: Tang, Pu
name: Chen, Xue-Xin
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Blacus
Blacus tanae

description: Blacus (Tarpheion) tanae sp. nov.
(Figs. 31–32)
Material examined. Holotype: ♀, China, Yunnan, Tengchong, Houqiao, 1.VI.2009, Tan Jiangli, No. 200906276 (ZJUH). Paratypes: 6 ♀♀, China, Yunnan, Xianggelila, Hutiaoxia, 7. VI.2009, Tan Jiangli, No. 200906270, 200906271; Yunnan, Bao Mtn, Lujiangba, 9. V.2009, Wang Manman, No. 200902540, 200902551; China, Fujian, Wuyi Mtn, Tongmu, 15. IV.2009, Tan Jiangli, No. 201602543; Wuyi Mtn, Sangang, 15. IV.2009, Wang Manman, No. 201605941 (ZJUH).
Description. Female. Length of body 2.0 mm, length of fore wing 2.2 mm.
Head. Antennomeres 20; length of first flagellomere 1.45 × length of second flagellomere; length of first, second and penultimate flagellomere 6.4, 4.4 and 3.25 × their width, respectively; length of maxillary palp 1.3 × height of head; occipital carina complete (Fig. 32A); frons slightly depressed medially, nearly flat; OOL: diameter of posterior ocellus: POL = 17:6:7; length of eye in dorsal view 2.25 × length of temple; face smooth, densely setose, temple glabrous; 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, remainder coarsely reticulate (Fig. 32G); carinae of middle lobe of mesoscutum subvertical and subhorizontal; precoxal sulcus complete, with some short striae (Fig. 32G); notauli complete, crenulate-rugose, wide and deep (Fig. 32D); mesoscutal lobes setose, middle lobe slightly concave anteriorly; scutellum smooth, its lateral carina complete, not protruding apically; surface of propodeum smooth between carinae, its medial area distinctly widened dorsally.
Wings. Fore wing: first discal cell widely truncate anteriorly; vein r vertical (Fig. 32F), length of vein r 1.2 × width of pterostigma; 1-CU1:2-CU1 = 1:4.
Legs. Hind coxa smooth dorsally, with an oblique dorsal carina; length of femur, tibia and basitarsus of hind leg 7.5, 14.0 and 10.8 × their width, respectively; fore claws with long bristles (Fig. 32I), middle claws with one bristle, hind claws simple.
Metasoma. Length of first tergite 3.1 × its apical width, slightly widened apically, superficially rugose apically (Fig. 32E); second tergite with coarse, longitudinal striae and remainder smooth (Fig. 32E); length of ovipositor sheath 0.15 × length of fore wing.
Colour. Reddish-brown; four basal antennomeres, frontal head, palpi, all legs yellow; tegulae, remainder of antennomeres (but subapically pale brown), ovipositor and its sheath, veins, pterostigma, metasomal tergite and hypopygium brown; parastigma and base of pterostigma white; bristles of fore claws blackish, one bristle of middle claws yellow; wing membrane subhyaline.
Variation. Length of first tergite 2.6–3.1 × its apical width; length of eye in dorsal view 2.1–2.25 × length of temple; length of fore wing 1.9–2.2 mm; length of ovipositor sheath 0.14–0.17 × length of fore wing.
Male. Unknown.
Biology. Unknown.
Distribution. China (Yunnan, Fujian).
Etymology. The specific name tanae refers to the name of its collector, Prof. Tan Jiangli.
Notes. The new species is similar to B. (T.) apicalis van Achterberg, 1976 because precoxal suture is complete and having some striae, second tergite with coarse, longitudinal rugae, vein r of fore wing subvertical, and 4 basal antennomeres yellowish, but differs by having mainly subvertical carina of middle lobe of mesoscutum (subhorizontal in B. (T). apicalis), apical antennomeres of antenna pale brown (yellowish-white), fore claws with long blackish bristles, middle claws with one yellow bristle (all claws simple), length of body 2.0 mm (1.5 mm), length of fore wing 1.9–2.2 mm (about 1.5 mm), length of the first tergite 2.6–3.1 × its apical width (2.1–2.3 ×), and length of eye in dorsal view 2.1–2.25 × length of temple (1.9 ×).
description: Published as part of Lu, Qian-Yu, Chai, Hong-Fei, Achterberg, Cornelis Van, Tang, Pu & Chen, Xue-Xin, 2024, Review of the subgenus Tarpheion of the genus Blacus Nees (Hymenoptera, Braconidae, Brachistinae) from China, with description of nine new species and eight new records, pp. 297-335 in Zootaxa 5406 (2) on pages 328-329, DOI: 10.11646/zootaxa.5406.2.5, http://zenodo.org/record/10618330