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Holotype, male. CHINA. Shanxi Province, Qinshui, Xiachuancun, Fuyuhe, sweep-net, 26.VII.2012, Kai Shi [SM01795].
Head dark brown; antenna and thorax brown; palp, abdomen, and hypopygium pale brown; legs yellowish-brown; wings fumose. Head (Fig. 2C, D). Eye bridge with 3 rows of facets. Prefrons with 3 setae. Clypeus non-setose. Maxillary palp 1-segmented, with 4 setae. Length/width of fourth flagellomere: 1.92. Thorax. Anterior pronotum with 6 setae, episternum 1 with 3 setae. Wings (Fig. 8B). Wing length 1.81 mm, width/length: 0.39. c/w: 0.73. R1/R: 0.70. M, Cu, stM, and r-m non-setose. Legs (Fig. 2E). Front tibia with a non-bordered prolateral patch of modified setae. Length of spur/width of foretibia 1.15. Length of femur/length of metatarsus: foreleg 1.29. Length of metatarsus/length of tibia: foreleg 0.51, hind leg 0.46. Length of hind tibia/length of thorax 1.32. Hypopygium (Fig. 2A, B). Sternite 10 with one seta on each half.
China, Shanxi (Fig. 9).
Based on the form of the gonostylus, the new species is similar to Peyerimhoffia alpina (Mohrig 1978). However, the new species differs in having palp is 1-segmented, the tegmen is strongly curved and greatly sclerotized, and the intercoxal area is simple in Peyerimhoffia obesa. In contrast, in Peyerimhoffia alpina, the palp is 3-segmented, the tegmen is slightly curved and weakly sclerotized, and the intercoxal area bears a lobe-like projection.
This species is named after its globally inflated gonostylus (Latin adjective obesus = obese).
- Shi, K; Huang, J; Zhang, S; Wu, H; 2014: Taxonomy of the genus Peyerimhoffia Kieffer from Mainland China, with a description of seven new species (Diptera, Sciaridae) ZooKeys, 382: 67-83. doi
- Mohrig W (1978) Zur Kenntnis flügelreduzierter Dipteren der Bodenstreu IX. Beitrag: Gattungen Corynoptera, Bradysia und Plastosciara (Sciaridae). Zoologischer Anzeiger 201: 424-432.