Toxorhina (Ceratocheilus) pianmica Xu, Lv & Zhang, 2024

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

publication ID	https://doi.org/ 10.3897/zookeys.1205.117807
publication LSID	lsid:zoobank.org:pub:31CA30DA-E778-4046-B479-5F1705D4FC9A
DOI	https://doi.org/10.5281/zenodo.12517552
persistent identifier	https://treatment.plazi.org/id/C4EF4120-18B3-44FF-8398-0745D97927D3
taxon LSID	lsid:zoobank.org:act:C4EF4120-18B3-44FF-8398-0745D97927D3
treatment provided by	ZooKeys by Pensoft
scientific name	Toxorhina (Ceratocheilus) pianmica Xu, Lv & Zhang
status	sp. nov.

Treatment

Toxorhina (Ceratocheilus) pianmica Xu, Lv & Zhang sp. nov.

Figs 4 View Figure 4 , 5 View Figure 5

Type material.

Holotype. China • ♂; Yunnan Province, Lushui County, Pianma Town ; 2123 m a. s. l.; 26.0142 ° N, 98.6272 ° E; 6 July 2013; Xuankun Li leg.; light trap; CAU GoogleMaps . Paratypes. China • 3 ♂♂; same data as for holotype; CAU GoogleMaps .

Diagnosis.

Prescutum and presutural scutum dark brown with edges of prescutal suture and both sides of caudal edge darker (Fig. 4 C View Figure 4 ). Pleuron dark brown. Wing with cell d open by absence of m-m. R 4 ending slightly before end of basal section of R 5, m-cu before fork of M by about 1 / 3 of its own length. Gonocoxite with 1 gonostylus. Gonocoxite dorsally with three brownish-black, stout preapical setae, and a blunt lobe at inside of base; the lobe with nine stout setae. Interbase elongated, rod-shaped. Tip of aedeagus bifid with arms short and divergent.

Description.

Male (Fig. 4 A View Figure 4 ). Body length 4.4–4.9 mm (excluding rostrum), wing length 4.5–5.0 mm, rostrum length 2.7–3.0 mm, halter length 0.6–0.7 mm.

Head (Fig. 4 B View Figure 4 ). Dark brown. Setae on head dark brown. Antenna with scape pale brown, pedicel and first flagellomere brown, remaining flagellomeres pale brown. Scape short cylindrical, with dark brown setae. Pedicel globular, with dark brown setae. First flagellomere oval, remaining flagellomeres cylindrical; terminal two flagellomeres longest with pale brown verticils. Rostrum about 3 / 5 of length of wing, brown with dark brown setae.

Thorax (Fig. 4 C View Figure 4 ). Pronotum brown. Prescutum and presutural scutum dark brown, with edges of prescutal suture and both sides of caudal edge darker. Postsutural scutum dark brown, paler in middle area. Scutellum dark brown with side and caudal edges black, paler in middle area. Mediotergite brown with side edges brownish-black. Pleuron dark brown (Fig. 4 A View Figure 4 ). Coxae yellow with bases brown; trochanters yellow; femora brown with bases paler; tibiae brown; base of fore tarsus brown, remaining tarsi missing. Setae on legs brown. Wing (Fig. 4 D View Figure 4 ) pale brown, without stigma. Veins brown. Venation: Sc ending slightly beyond origin of Rs; sc-r a great distance before tip of Sc; R 4 ending slightly before end of basal section of R 5; distal section of R 5 approach M 1 + 2 toward tip; CuP curved suddenly at middle; cell d open by absence of m-m; m-cu before fork of M by about 1 / 3 its own length. Halter yellow.

Abdomen (Fig. 4 A View Figure 4 ). Segments 1–6 brown with caudal edges darker, segments 7–8 dark brown.

Hypopygium (Fig. 5 View Figure 5 ). Tergite 9 dark brown with dark brown setae, posterior margin with two large translucent areas on both sides (Fig. 5 A, E View Figure 5 ). Gonocoxite brown, conical with tip round (Fig. 5 A, B View Figure 5 ); dorsal face with a few sparse brown setae at outside, three brownish-black, stout preapical setae (Fig. 5 A, F View Figure 5 ), and a blunt lobe at inside of base, this lobe with nine stout setae (Fig. 5 A, G View Figure 5 ); ventral face with numerous brown setae at inside (Fig. 5 B View Figure 5 ). Gonostylus brownish-yellow, curved inwards at basal 1 / 3; the basal 1 / 3 stout with a longitudinal groove, distal 2 / 3 slender with tip round; outer side of basal 1 / 3 with outwardly curved spine (Fig. 5 A, B, H View Figure 5 ). Interbase pale brownish-yellow, elongated, rod-shaped, about 10 times as long as wide; tip inflated and round (Fig. 5 A – D View Figure 5 ). Parameres dark brown, medially arched fused, distally connecting to base of interbase (Fig. 5 C, D View Figure 5 ). Ejaculatory apodeme dark brown except pale base, rod-shaped (Fig. 5 C, D View Figure 5 ). Aedeagus dark brown, stout at base, tip bifid with arms short and divergent (Fig. 5 A – D, I View Figure 5 ).

Female. Unknown.

Etymology.

The species is named after the type locality, Pianma Town.

Distribution.

China (Yunnan).

Behavior.

The species can be attracted by light.

Remarks.

The new species is similar to T. (C.) simplicistyla Alexander, 1967 from India in having similar wing venation, but can be separated by the brown abdomen with segments 7–8 darker (Fig. 4 A View Figure 4 ), the gonostylus conspicuously curved with a spine at the basal 1 / 3 (Fig. 5 A, B, H View Figure 5 ), and the interbase with the tip inflated (Fig. 5 A – D View Figure 5 ). In T. (C.) simplicistyla , the abdomen is brownish-black, the gonostylus is very gently curved with a spine near the middle, and the tip of the interbase is not inflated ( Alexander 1967).