Bradysia chenjinae Yang, Zhang & Yang, 1993

Yang, Xue, Shi, Kai, Heller, Kai, Menzel, Frank, Huang, Junhao & Wu, Hong, 2019, Morphology and DNA barcodes of two species of Bradysia Winnertz from China (Diptera, Sciaridae), with the description of Bradysia minorlobus Yang, Shi & Huang sp. n., Zootaxa 4612 (1), pp. 85-94 : 89-90

Bradysia chenjinae Yang, Zhang & Yang, 1993

( Fig. 2 A–C)

Specimens examined. Holotype: male. CHINA: Guizhou Province, Guiyang, Institute of Biological Research, Guizhou Academy of Sciences , sweep-net, 1.IX.1987, leg. Chikun Yang ( ZAFU). Paratypes: CHINA: 3 males, same data as holotype, but 3.IX.1987 ; 1 male, Guizhou Institute of Forestry Science , sweep-net, 7.VIII.1987, leg. Xuemin Zhang ( ZAFU). (Some errors were found in the original description of the type series after checking the labels. The specimen information of the holotype in the original description was exactly the same as here provided, and the information of all the paratypes provided here were different from those in Yang et al. (1993)) . Additional material: 6 males, Zhejiang Province, Longwang Mountain , VII.1995 ; 3 males, same data, but light-trap 20.VIII.1995 ; 1 male, same data, but IV.1996, leg. Hong Wu ; 1 male, same data, but 12.V.1996, leg. Hong Wu ; 2 males, Zhejiang Province, Linan, Jixian Village , sweep-net, 15.XII.2011, leg. Kai Shi [ SM01799–1800 ] (The drawings are based on SM01799 ) ( ZAFU) ; 1 male, Zhejiang, Linan, Taihuyuan, Jinyou Village , sweep-net, 28.IV.2016, leg. Kai Heller [ SCILA154-16 ] ; 5 males, Zhejiang, Linan, Banqiao, Mengwuli Village , Malaise trap, 28.V.2016, leg. Kai Heller [ SCILA147-16 , SCILA168-16 , SCILA174-16 , SCILA202-17 , SCILA203-17 ] ; 1 male, Zhejiang, Changxing, Yangwan Village , Malaise trap, 18.V.2016, leg. Kai Shi [ SCILA252-17 ] ; 1 male, Zhejiang, Tianmu Mountain , sweep-net, 18.V.2016, leg. Kai Heller [ SCILA346-17 ] ; 2 males, Zhejiang, Tianmu Mountain , sweep-net, 05.V.2017, leg. Kai Heller [ SCILA347-17 , SCILA363-17 ] ; 1 male, Zhejiang, Changxing, Yangwan Village , Malaise trap, 10.XII.2016, leg. Kai Shi [ SCILA370-17 ] ( ZFMK) .

Redescription. Male. Colouration. Head dark brown; antenna, thorax, abdomen, and hypopygium brown; palpus and legs yellowish-brown; wing fumose. Head. Eye bridge with three rows of facets. Prefrons with 19 setae. Clypeus with one seta. Basal segment of palpus with 2 setae; 2 nd segment with 6 setae; 3 rd segment with 6 setae. Length/width of 4 th flagellomere: 2.49. Neck length/width: 0.82–1.26. Thorax. Anterior pronotum with 2 setae, episternum 1 with 4 setae. Wings ( Fig. 2C ). Length 1.82–1.84 mm, width/length: 0.35–0.37. c/w: 0.63– 0.71. R1/R: 0.57–0.58. M, Cu, r-m and stM bare. Legs. Foretibia with a comb of 8 setae. Length of spur/width of foretibia 1.62. Length of femur/length of metatarsus: foreleg 1.33. Length of metatarsus/length of tibia: foreleg 0.58, hind leg 0.44. Length of hind tibia/length of thorax 1.62. Foretibia with 0 dorsal, 0 ventral, 2 prolateral and 2 retrolateral spinose setae. Midtibia without dorsal spinose setae. Hypopygium ( Fig. 2A ). Hypopygium 1.2 times as long as wide. Gonocoxite length close to gonostylus length; with one ventral elongate seta at apicomesial corner; with densely setose ventrally. Intergonocoxal area with large, deeply bifid, densely setose lobe. Gonostylus ( Fig. 2B ) elongated, 2.08 times as long as wide, the apical tooth lacking. A small subapical dorsal lobe with 5 short megasetae, forming a close group. Tegmen roundish apically, 0.63 times as long as wide; with some aedeagal teeth. Sternite 10 with 1 seta on each half.

Female. Unknown.

BIN. BOLD:ACO5209.

Distribution. China: Guizhou, Zhejiang.

Remarks. In the original description of the species, the authors stated that the diagnosis of B. chenjinae was comparable to that of the similar species Bradysia chunmeiae Yang, Zhang & Yang, 1993 , without specifying the characters of the two species in detail, while the latter species was characterized by its light colour and antennal characters. After comparing the type specimens of both species, we found that the two species are quite different, in that B. chunmeiae has no distinct subapical dorsal lobe on the gonostyli and a rather short neck of the antenna (neck length/width: 0.22–0.41), whereas B. chenjinae has a distinct subapical dorsal lobe on the gonostyli and a longer neck of the antenna (neck length/width: 0.82–1.26).

Etymology. This species was named after Prof. Chenjin Yang for supporting Prof. Chi-kun Yang’s insect investigation in Guizhou Province in 1987.

Figures

FIGURE 2. Bradysia chenjinae Yang, Zhang & Yang, male [SM01799]. A. Left half of hypopygium, ventral view; B. Right gonostylus, ventral view. C. Wing, dorsal view. Scale bars (A-B) = 0.10 mm, scale bar (C) = 0.50 mm. Drawings: Kai Shi.