Dolichosciara rectospinosa Shi & Huang

Wu, Hong, Shi, Kai, Huang, Junhao & Zhang, Sujiong, 2013, Review of the genus Dolichosciara Tuomikoski (Diptera, Sciaridae) from China, Zootaxa 3745 (3), pp. 343-364 : 356

Dolichosciara rectospinosa Shi & Huang , sp. nov.

( Figs. 7 , 10 F, 11)

Specimens examined. Holotype, male. CHINA. ZHEJIANG province, Linan, Mt. Qingliangfeng, Qianqingtang, Malaise trap, 13.V.2012 [SM01545]. Paratypes, ZHEJIANG. Linan, Mt. Qingliangfeng: 1 male, Qianqingtang, Malaise trap, 13.V.2012 [SM01541]; 3 males, Qianqingtang, Malaise trap, 15.V.2012 [SM01494, SM01537, SM01554]; 5 males, Longtangshan, Malaise trap, 15.V.2012 [SM01470, SM01472, SM01499–01510, SM01512]; 3 males, Shunxiwu, Malaise trap, 25.VI.2012 [SM01379, SM01451]. 1 male, Linan, Mt. Tianmushan, 1225 m, Malaise trap, 19.VI.2012 [SM01350].

Description (Male). Color. Head dark brown; antenna, thorax, abdomen and hypopygium brown; palpus and legs yellowish-brown; wing fumose. Head ( Fig. 7 C, D). Eye bridge with 2–3 rows of facets. Prefrons with 31–35 setae. Clypeus with 0–1 seta. Palpus three-segmented, basal segment with 5 setae; 2nd segment with 13–14 setae; 3rd segment with 13–14 setae. Length/width of 4th flagellomere: 2.87–3.42. Thorax. Anterior pronotum with 6–10 setae, episternum 1 with 8–9 setae. Wings ( Fig. 10 F). Wing length 3.00– 3.60 mm, width/length: 0.34–0.37. c/w: 0.39–0.53. R1/R: 0.71–1.00. Y/X: 1.57–2.03. Y with 0–1 seta, stM with 1–4 setae, M and Cu with numerous setae. Legs. Fore tibia with a comb of 8–10 setae ( Fig. 7 E). Length of spur/width of foretibia 1.66–2.37. Length of femur/ length of metatarsus: foreleg 0.80–0.90. Length of metatarsus/length of tibia: foreleg 0.73–0.81, hind leg 0.54– 0.61. Length of hind tibia/length of thorax 1.94–2.15. Fore tibia with 1 dorsal, 8–11 ventral, 7–12 prolateral and 5– 8 retrolateral spinose setae. Tarsal claws with large teeth. Hypopygium ( Fig. 7 A, B). Gonocoxite slightly longer than gonostylus. Ventral setosity of gonocoxite dense, 3 setae at the apicoventral corner greatly elongated, setosity sparse on intercoxal area of hypopygium. Gonostylus slender, slightly narrowed towards apex; setosity dense at apex, with 4–5 straight megasetae closely on the apicomesial part. Tegmen slightly wider than long. Sternite 10 with 1–2 setae on each half. N = 9 for all measurements.

Distribution. China (Zhejiang, Fig. 11 ).

Remarks. By the form of hypopygium, the new species is similar to D. ornata (Winnertz, 1867) . But the two species differ greatly in the gonostylus that the new species has the straight megasetae nearly as wide as the apical gonostylus and located at submesial part of the gonostylus, while the slightly curved megasetae nearly half as wide as the apical gonostylus and located at the apical third of the gonostylus in D. ornata (Winnertz, 1867) .

Etymology. This species is named after its straight megasetae on the gonostylus, from the Latin adjective rectospinosa , meaning straight thorn.

Figures

FIGURE 7. Dolichosciara rectospinosa Shi & Huang, sp. nov., male, holotype. A, left gonostylus, ventral view; B, part of hypopygium, ventral view; C, palpus, lateral view; D, 4 th flagellomere, lateral view; E, apex of foretibia, prolateral view. Scale 0.10 mm.

FIGURE 10. Wings, dorsal view. A, D. sparsula sp. nov. (paratype); B, D. gracilenta sp. nov. (paratype); C, D. oxyacantha sp. nov. (holotype); D, D. scrobiculata sp. nov. (holotype); E, D. tumidula sp. nov. (holotype); F, D. rectospinosa sp. nov. (holotype); G, D. multisetosa sp. nov. (paratype); H, D. qingliangfengana sp. nov. (paratype). Scale 0.50 mm.

FIGURE 11. Geographical distribution of Dolichosciara from China.