Toxorhina (Ceratocheilus) univirgata Zhang, Li & Yang, 2015

Lv, Hanhuiying, Xu, Yuanyuan, Liu, Shulin, Li, Linghui, Lin, Kejian & Zhang, Xiao, 2024, An updated review of the genus Toxorhina Loew, 1850 (Diptera, Limoniidae) from Yunnan, China with a description of a new species, ZooKeys 1205, pp. 191-204 : 191-204

Toxorhina (Ceratocheilus) univirgata Zhang, Li & Yang, 2015

Figs 6 , 7

Toxorhina (Ceratocheilus) univirgata Zhang, Li & Yang, 2015 in Zhang et al. 2015: 76. Type locality: China, Yunnan, Lvchun, Huanglianshan.

Specimens examined.

China • 4 ♂♂; Yunnan Province, Lvchun County, Huanglianshan National Nature Reserve, Yakou Protection Station ; 1931 m a. s. l.; 22.8956 ° N, 102.3008 ° E; 7 July 2016; Qilemoge leg.; light trap; CAU .

Diagnosis.

Prescutum and presutural scutum brownish-yellow with three broad brown longitudinal stripes. Pleuron yellow with one dark brown longitudinal stripe. Wing with cell d closed. R 4 ending beyond end of basal section of R 5 by 1 / 3–2 / 5 of its own length, m-cu from a distance before to at fork of M. Gonocoxite with 1 gonostylus. Gonocoxite dorsally without stout setae. Interbase as a short and flattened plate. Tip of aedeagus bifid with arms very long.

Description.

Male (Fig. 6 A ). Body length 5.3–5.8 mm (excluding rostrum), wing length 5.0– 5.5 mm, rostrum length 4.8–5.3 mm, halter length 0.6–0.7 mm.

Head (Fig. 6 A ). Rostrum slightly shorter than wing, dark brown with dark brown setae.

Thorax (Fig. 6 A ). Coxae pale yellow, fore coxa slightly darker; trochanters yellow with tips black; femora brown with bases paler; tibiae brown; tarsi brown with tips slightly paler (Fig. 6 A ). Wing with position of m-cu unstable, ranging from a distance before fork of M to at fork of M (Fig. 6 B, C ).

Hypopygium (Fig. 7 ). Tergite 9 brownish-yellow with dark brown setae, posterior margin with two nearly triangular lobes, separated by V-shaped incision, laterally with two translucent areas on both sides (Fig. 7 A, E ). Gonocoxite brownish-yellow, long conical with tip round; setae on gonocoxite dark brown, outside of ventral face without setae (Fig. 7 A, B ). Gonostylus brown with distal half paler, curved inwards at middle, basal half stout with numerous small spines at outer side, distal half slender with tip round; outer side of middle with a spine; the spine curved outwards (Fig. 7 A, B, F, G ). Interbase brownish-yellow, as a short and flattened plate, about 3 times as long as wide; tip blunt (Fig. 7 A – D ). Parameres pale brownish-yellow with edges brown, sheet-like, distally connecting to base of interbase (Fig. 7 C, D ). Ejaculatory apodeme pale brownish-yellow with middle brown, sheet-like, base narrow (Fig. 7 C, D ). Aedeagus pale brownish-yellow with brown, stout base; tip bifid, arms filiform and very long, bent dorsally with tip bent outward (Fig. 7 A – D, H – J ).

Distribution.

China (Yunnan) ( Oosterbroek 2023).

Behavior.

The species can be attracted by light.

Remarks.

Zhang et al. (2015) described and illustrated this species as a new species from China. This study supplements the description of the legs, wing, and rostrum. In addition, a more detailed description and illustrations of the male hypopygium of this species are also provided.

Figures

Figure 6. Toxorhina (Ceratocheilus) univirgata A habitus of male, lateral view B wing C variation of wing (the arrow refers to the positional variation of m-cu). Scale bars: 2.0 mm (A); 1.0 mm (B, C).

Figure 7. Toxorhina (Ceratocheilus) univirgata A male hypopygium, dorsal view B male hypopygium, ventral view C aedeagal complex, dorsal view D aedeagal complex, ventral view E posterior margin of tergite 9, dorsal view F gonostylus, dorsal view G gonostylus, posterior view H aedeagus, posterior view I tip of aedeagus, dorsal view J tip of aedeagus, ventral view. Scale bars: 0.2 mm (A, B, E); 0.1 mm (C, D, H – J); 0.05 mm (F, G).