Dolichosciara scrobiculata 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 : 350-352

Dolichosciara scrobiculata Shi & Huang , sp. nov.

( Figs. 4 , 5 , 10 D, 11)

Specimens examined. Holotype, male. CHINA. FUJIAN province, Wuyishan, Xingcunzhen, Tongmucun, Guadun, sweep-net, 26.IV.2012, Kai Shi [SM01342]. Paratypes, FUJIAN. 1 male, the same data as holotype [SM01339]. GUANGXI. Nanning, Mt. Damingshan: 2 males, sweep-net, 23.V.2011, Ting-Ting Zhang [SM01347– 01348]; 1 male, sweep-net, 25.V.2011, Ting-Ting Zhang [SM01312]. GUIZHOU. 1 male, Libo, Maolan, Yaozhai, sweep-net, 29.V.2010, Yan Li [SM01337]. TAIWAN . Xuanlan, Fushan Botanical Garden: 2 males, 635 m, sweepnet, 10.VI.2010, Ding Yang [SM01403, SM01405]; 2 males, 670 m, sweep-net, 10.VI.2010, Xiao-Yan Liu [SM01320, SM01321]. 2 males, Kending Nature Park, 240 m, sweep-net, 31.V.2011, Xiao-Yan Liu [SM01315– 01316]. 1 male, Maolin, Duona-lindao, 300 m, sweep-net, 3.VI.2011, Xiao-Yan Liu [SM01322]. 1 male, Pingdong, Hengchun, Tropical Test Center, 198 m, sweep-net, 7.VI.2010, Ding Yang [SM01418]. YUNNAN. 1 male, Honghe, Hekou, Nanxizhen, 300 m, sweep-net, 13.V.2011, Li-hua Wang [SM01324].

Description (Male). Color. Head, thorax and abdomen brown; antenna, palpus, legs and hypopygium yellowish-brown; wing fumose. Head ( Fig. 5 A, B). Eye bridge with 4–5 rows of facets. Prefrons with 19–45 setae. Clypeus with 1–3 setae. Palpus three-segmented, basal segment with 3–8 setae; 2nd segment with 14–20 setae; 3rd segment with 8–17 setae. Length/width of 4th flagellomere: 2.99–3.86. Thorax. Anterior pronotum with 8–15 setae, episternum 1 with 3–14 setae. Wings ( Fig. 10 D). Wing length 3.11–3.85 (4.30 mm for Guizhou individual), width/length: 0.33–0.40. c/w: 0.38–0.54. R1/R: 0.60–1.02. Y/X: 1.95–2.86. Y with 0–3 setae, stM with 1–8 setae, M and Cu with numerous setae. Legs. Fore tibia with a comb of 8–12 setae ( Fig. 4 D). Length of spur/width of foretibia 1.53–1.99. Length of femur/length of metatarsus: foreleg 0.79–0.91. Length of metatarsus/length of tibia: foreleg 0.63–0.83, hind leg 0.52–0.74. Length of hind tibia/length of thorax 1.99–2.45. Fore tibia with 1 dorsal, 7– 17 ventral, 2–18 prolateral and 4–26 retrolateral spinose setae. Tarsal claws with large teeth. Hypopygium ( Fig. 4 A, B, C). Gonocoxite slightly longer than gonostylus. Ventral setosity of gonocoxite dense, 2–3 setae at the apicoventral corner greatly elongated, setosity sparse on intercoxal area of hypopygium. Gonostylus slender, eventually narrowed towards apex, with impression on apicomesial part; setosity dense at apex, with 10–16 straight megasetae subequal in size that scattered in the impression. Tegmen wider than long. Sternite 10 with 1–2 setae on each half. N = 15 for all measurements.

Distribution. China (Fujian, Guangxi, Guizhou, Taiwan , Yunnan, Fig. 11 ).

Remarks. By the gonostylus, this new species is similar to D. oxyacantha sp. nov. ( Fig. 3 ), D. megumiae and D. ninae , and the diagnosis is under the former species.

Etymology. This species is named after its gonostylus having an apicomesially impression, which looks like a ditch, from the Latin adjective scrobiculatus, meaning ditch.

Figures

FIGURE 3. Dolichosciara oxyacantha 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 4. Dolichosciara scrobiculata Shi & Huang, sp. nov., male, holotype. A, right gonostylus, ventral view; B, part of hypopygium, ventral view; C, right gonostylus (paratype), ventral view; D, apex of foretibia, prolateral view. Scale 0.10 mm.

FIGURE 5. Dolichosciara scrobiculata Shi & Huang, sp. nov., male, holotype. A, palpus, lateral view; B, 4 th flagellomere, lateral 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.