Toxorhina (Ceratocheilus) tinctipennis (Alexander, 1930)

Zhang, Xiao, Li, Yan & Yang, Ding, 2015, A review of the genus Toxorhina Loew from China, with descriptions of three new species (Diptera, Limoniidae, Limoniinae), ZooKeys 480, pp. 59-80 : 70-73

Taxon classification Animalia Diptera Limoniidae

Toxorhina (Ceratocheilus) tinctipennis (Alexander, 1930) Figs 11, 12

Ceratocheilus tinctipennis Alexander 1930: 75. Type locality: Mt. Ali (Arishan), China (Taiwan).

Diagnosis.

Rostrum shorter than wing. Prescutum brownish black. Pleuron brownish black. Wing with a strong brown suffusion; R2+3 ending beyond or close to end of basal section of R4+5, basal section of CuA1 before or close to fork of M. Abdomen dark brown with segments six to eight darker. Gonostylus with a very small spine near middle. Rods of aedeagus short.

Description.

Male. Body length 5.0-6.0 mm, wing length 4.5-5.0 mm, rostrum length 3.0-3.5 mm.

Head (Fig. 11c). Dark brown. Hairs on head dark brown. Antenna length 0.6-0.7 mm. Scape brown; pedicel and flagellomeres dark brown. Pedicel enlarged and nearly globose. First flagellomere subconical; remaining flagellomeres cylindrical, each flagellomere longer and slenderer than previous one, terminal two flagellomeres longest with several long hairs. Rostrum dark brown to brownish black with dark brown hairs.

Thorax. Generally dark brown to brownish black. Pronotum dark brown. Prescutum brownish black. Scutum dark brown with middle area slightly paler. Scutellum dark brown with borders brownish black to black. Mediotergite dark brown (Fig. 11d). Pleuron (Fig. 11 a–b) brownish black. Hairs on thorax dark brown. Coxae brownish yellow; trochanters yellow; femora dark brown with bases paler; tibiae and tarsi dark brown to brownish black. Hairs on legs dark brown. Wing (Fig. 11e) with a strong brown suffusion; veins dark brown. Venation: Sc1 ending a short distance beyond origin of Rs, Sc2 same or a slightly greater distance before origin of Rs; R2+3 ending beyond or close to end of basal section of R4+5; basal section of CuA1 before or close to fork of M; A1 curved suddenly at middle, basal half straight. Haltere length 0.7-0.8 mm, brownish yellow to pale brown.

Abdomen (Fig. 11 a–b). Generally dark brown. Segments six to eight darker. Hairs on abdomen dark brown.

Hypopygium (Fig. 12). Generally dark brown. Gonocoxite conical, short and stout, dorsal face with a blunt lobe near base, this lobe with numerous setae. Gono stylus with a very small spine near middle. Interbase rod-shaped. Aedeagus with tip divergent, rodS short.

Female (Fig. 11b). Body length 7.0-7.5 mm, wing length 6.0-6.5 mm, rostrum length 4.0-4.5 mm. Similar to male. But abdomen except hypopygium uniformly dark brown. Tenth tergite brownish yellow. Cercus and hypogynial dark brownish yellow. Tip of hypogynial valve reaching just beyond middle of cercus.

Specimens examined.

Holotype female (USNM), China: Taiwan, Jiayi, Mt. Ali (1981-2438 m), 1929.VII.7, Syuti Issiki. (One wing and one fore leg are mounted on a similarly labeled microscope slide. Only one mid leg is still attached to the dry mounted body, and the remaining four legs are absent.) Other materials: 8 males 1 female (CAU), China: Taiwan, Jiayi, Mt. Ali (23°26'24"N, 120°46'48"E, 1100 m), 2012.VI.7, Lihua Wang.

Distribution.

China (Taiwan).

Remarks.

Male of this species is described and illustrated for the first time. For description and illustration of this species, also see Alexander (1930).