Peyerimhoffia sparsula Shi & Huang

Shi, Kai, Huang, Junhao, Zhang, Sujiong & Wu, Hong, 2014, Taxonomy of the genus Peyerimhoffia Kieffer from Mainland China, with a description of seven new species (Diptera, Sciaridae), ZooKeys 382, pp. 67-83 : 72-73

Peyerimhoffia sparsula Shi & Huang sp. n. Figs 3, 8C, 9

Specimens examined.

Holotype, male. CHINA. Shaanxi Province, Huxian, Laoyu, Baliping Zhuque Nature Park, sweep-net, 12.VII.2012, Kai Shi [SM01712].

Description (male).

Head dark brown; antenna, thorax, abdomen, and hypopygium brown; palp pale brown; legs yellowish-brown; wings fumose. Head (Figs 3C, D). Eye bridge with 3 rows of facets. Prefrons with 5 setae. Clypeus with 1 seta. Maxillary palp 3-segmented, segment 1 with one seta. Length/width of fourth flagellomere: 2.30. Thorax. Anterior pronotum with 2 setae, episternum 1 with 4 setae. Wings (Fig. 8C). Wing length 1.46 mm, width/length: 0.39. c/w: 0.54. R1/R: 0.61. M, Cu, stM, and r-m non-setose. Legs (Fig. 3E). Front tibia with proximally bordered prolateral patch of modified setae. Length of spur/width of foretibia 1.28. Length of femur/length of metatarsus: foreleg 1.48. Length of metatarsus/length of tibia: foreleg 0.52, hind leg 0.50. Length of hind tibia/length of thorax 1.29. Hypopygium (Fig. 3A, B). Sternite 10 with one seta on each half.

Distribution.

China, Shaanxi (Fig. 9).

Remarks.

Based on the form of the gonostylus, the new species is similar to Peyerimhoffia ultima Vilkamaa & Hippa, 1998. However, the new species can be distinguished by the front tibia with a proximally bordered prolateral patch of modified setae, the gonostylus with few short subapical setae, and the tegmen sub-truncate apically. In contrast, Peyerimhoffia ultima has an indistinct row of setae on the front tibia, a gonostylus with numerous long subapical setae, and a tegmen moderately curved apically.

Etymology.

This species is named after its sparse setosity on the gonocoxite (Latin adjective sparsulus = sparse).