Toxorhina (Ceratocheilus) fuscolimbata Alexander, 1967

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) fuscolimbata Alexander, 1967

Fig. 2

Toxorhina (Ceratocheilus) fuscolimbata Alexander, 1967 in Alexander 1967: 185. Type locality: India, Assam, Manipur, Hkayam Boum.

Toxorhina (Ceratocheilus) fuscolimbata in Zhang et al. 2015: 64.

Specimens examined.

China • 2 ♂♂; 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 and nearly confluent brownish-black longitudinal stripes. Pleuron yellow with two black longitudinal stripes. Wing with black seams along cord and m-m and paler seam over base of CuA. Cell d closed. R 4 ending beyond end of basal section of R 5 by half of its own length, m-cu beyond fork of M by 1 / 4–1 / 2 of its own length. Gonocoxite with 2 gonostyli. Gonocoxite dorsally without stout preapical setae. Interbase as a short and flattened plate. Tip of aedeagus bifid with arms short and divergent.

Description.

Male. Hypopygium (Fig. 2 ). Tergite 9 brownish-yellow with dark brown setae, posterior margin with a broad and nearly rounded emargination (Fig. 2 A ). Gonocoxite dark brown, cylindrical, with dark brown setae; setae on dorsal side darker and stronger (Fig. 2 A, B ). Outer gonostylus dark brown, slender and rod-shaped, about 10 times as long as wide, strongly curved ventrally and inwards at middle; tip acute (Fig. 2 A, B, E – G ). Inner gonostylus brownish-yellow, about 4 times as long as wide, with rounded tip, basally provided with additional, ventral horn-like process (Fig. 2 A, B, E, F ). Interbase brownish-yellow, as a short and flattened plate, about 3 times as long as wide; tip blunt (Fig. 2 A – D ). Parameres dark brown, arched and medially fused, distally connecting to base of interbase (Fig. 2 C, D ). Ejaculatory apodeme dark brown, rod-shaped and straight, about 7 times as long as wide (Fig. 2 C, D ). Aedeagus brownish-yellow, stout at base, tip bifid with arms short and divergent (Fig. 2 A – D ).

Distribution.

China (Guangxi, Tibet, Yunnan), India ( Oosterbroek 2023).

Behavior.

The species can be attracted by light.

Remarks.

Alexander (1967) first described this species based on one male and two female specimens collected in India, and later added figures of the wing and male hypopygium for this species ( Alexander 1970). Zhang et al. (2015) reported this species as a new record from China and redescribed and illustrated it. A more detailed description and illustration of the male hypopygium of this species are provided in this study.

Figures

Figure 2. Toxorhina (Ceratocheilus) fuscolimbata A male hypopygium, dorsal view B male hypopygium, ventral view C aedeagal complex, dorsal view D aedeagal complex, ventral view E gonostyli, dorsal view F gonostyli, posterior view G outer gonostylus, posterior view. Scale bars: 0.2 mm (A, B); 0.1 mm (C, D); 0.05 mm (E, F); 0.02 mm (G).