Terrilimosina unio Marshall, 1987

Cao, Wenqiang, Dong, Hui & Yang, Ding, 2025, A review of Terrilimosina Roháček, 1983 (Diptera, Sphaeroceridae) from China with new records and three new species, ZooKeys 1241, pp. 139-169 : 139-169

Terrilimosina unio Marshall, 1987

Figs 1 m , 28 , 29

Terrilimosina unio Marshall, 1987: 508. - Roháček et al. 2001: 272 [World Catalog of Sphaeroceridae].

Material examined.

China: Beijing: • 1 ♂; Haidian, Jiufeng ; 20.vi.2018, Jiale Zhou . Guangxi: • 1 ♂; Tonglezhen, Shenmutiankeng ; 1200 m, 19.iv.2024; Wenqiang Cao . Xizang: • 13 ♂, 25 ♀; Motuo , 80 K; 2125 m, 20.viii.2020; Qicheng Yang . Yunnan: • 2 ♂; Lushui, Pianmadaolu ; 2284 m, 13.viii.2023; Qicheng Yang . (all EMCAU).

Diagnosis.

Syntergite 1 + 2 with weakly sclerotized anteromedial patch. Sternite 5 with two small patches of short but stout posterior bristles (Fig. 29 d ). Surstylus with two very short, blunt bristles at the apex of the posteroventral lobe (Fig. 29 a – c ).

Type locality.

Nepal, Taplejung Distr., river banks below Tamrang Bridge [5500 ft].

Distribution.

China (Beijing, Xizang, Yunnan); Indonesia; Nepal.

Comments.

Terrilimosina unio Marshall , newly recorded from China, resembles T. brevipexa Marshall , from which it differs in having a weakly sclerotized anteromedial patch on syntergite 1 + 2, two small patches of short but stout posterior bristles on S 5 (Fig. 29 d ), and two very short, blunt bristles at the apex of the posteroventral lobe of the surstylus (Fig. 29 a – c ). Terrilimosina brevipexa Marshall has a uniformly sclerotized syntergite 1 + 2, a patch of posteromedial setulae on S 5 (Fig. 5 d ), and ~ 5 very short, blunt bristles at the apex of the posteroventral lobe of the surstylus (Fig. 5 a – c ).

Figures

Figure 1. Terrilimosina wings. a. T. bicruris sp. nov.; b. T. dentata sp. nov.; c. T. parasmetanai Su & Liu; d. T. brevipexa Marshall; e. T. parabrevipexa Su & Liu; f. T. maoershanensis Su; g. T. schmitzi (Duda); h. T. deemingi Marshall; i. T. capricornis Su & Liu; j. T. longipexa Marshall; k. T. paralongipexa Hayashi; l. T. nana Hayashi; m. T. unio Marshall; n. T. digitata sp. nov. Scale bar: 0.5 mm.

Figure 5. T. brevipexa Marshall, 1987 structures of male postabdomen. a. Terminalia posterior; b. Terminalia lateral; c. Phallus and associated structures lateral; d. S 5 ventral. Scale bar: 0.1 mm.

Figure 28. T. unio Marshall, 1987 habitus. a. Male lateral; b. Female lateral. Scale bars: 1.0 mm.

Figure 29. T. unio Marshall, 1987 structures of male postabdomen. a. Terminalia posterior; b. Terminalia lateral; c. Phallus and associated structures lateral; d. S 5 ventral. Scale bar: 0.1 mm.