Prosciara fossulata Shi & Huang

Shi, Kai, Huang, Junhao, Komarova, Lyudmila, Zhang, Sujiong & Wu, Hong, 2013, Review of the genus Prosciara Frey (Diptera, Sciaridae) from China, Zootaxa 3640 (3), pp. 301-342 : 322

Prosciara fossulata Shi & Huang , sp. nov.

( Figs. 12 , 24 )

Specimens examined. Holotype, male. China, Taiwan, Xuanlan, Fushan , Botanical Garden, 635 m, sweep-net, 13.XI.2010, Ding Yang [SM01134].

Description (Male). Color. Head dark brown; antenna bicolored, flagellomeres brown, scape and pedicel yellow; palpus, thorax, abdomen and hypopygium yellowish-brown; legs yellow; wing fumose. Head. Eye bridge with 3 rows of facets. Head in poor condition in the specimen studied, prefrons, clypeus and basal segment of palpus not well seen. 2nd segment of palpus with 13 setae; 3rd segment with 10 setae. Length/width of 4th flagellomere: 3.58 ( Fig. 12 C). Thorax. Anterior pronotum with 8 setae, episternum 1 with 6 setae. Wings. Wing length 3.14 mm, width/length: 0.36. c/w: 0.51. R1/R: 0.60. r-m with 1 seta, stM with 3 setae, M1 and M2 with numerous setae, Cu1 and Cu2 with numerous setae. Legs. Foretibia with a comb of 8 setae ( Fig. 12 D). Length of spur/width of foretibia 1.97. Length of femur/length of metatarsus: foreleg 0.73. Length of metatarsus/length of tibia: foreleg 0.76, hind leg 0.56. Length of hind tibia/length of thorax 2.51. Foretibia with 0 dorsal, 5 ventral, 12 prolateral and 6 retrolateral spinose setae. Midtibia without dorsal spinose setae. Hypopygium ( Fig. 12 A, B). Sternite 10 with 1 seta on each half.

Distribution. China ( Taiwan, Fig. 24 ).

Remarks. The new species is similar to P. m e r a c u l a Vilkamaa & Hippa, 1996 in the gonostylus form, but other characters are distinctively different from P. m e r a c u l a and the other species by the slightly elongated flagellomeres, four megasetae on a wide apex of a medially located short dorsal lobe on the gonostylus, lacking the intercoxal lobe on the hypopygium and bare ventral membraneous area between the gonocoxites.

Etymology. This species is named after the ventral membraneous area between the gonocoxites that looks like a ditch, from the Latin adjective fossulatus, meaning ditch.

Figures

FIGURE 12. Prosciara fossulata Shi & Huang, sp. nov., male, holotype. A, part of hypopygium, ventral view; B, right gonostylus, ventral view; C, 4 th flagellomere, lateral view; D, apex of foretibia, prolateral view. Scale 0.10 mm.

FIGURE 24. Geographical distribution of Prosciara from China.