Dettopsomyia camelonota Wang, Li & Gao, 2021

Wang, Ya-Lian, Li, Qiao, Toda, Masanori J. & Gao, Jian-Jun, 2021, The genus Dettopsomyia Lamb, 1914 (Diptera, Drosophilidae) from southern China, ZooKeys 1056, pp. 73-94 : 73

Dettopsomyia camelonota Wang, Li & Gao sp. nov.

Figure 7

Material.

Holotype: ♂ (#01607), Banpo , Yixiang , Simao, Pu’er, Yunnan, China, ca. 1300 m (22.73°N, 101.12°E), 25.x.2012 (J.J. Gao) (KIZ) . Paratype: China: 1♀ (#01608), same data as holotype (KIZ) .

Diagnosis.

This species differs from all the remaining congeneric species in CS-code (ABCD?FGhiJK?m) (Table 3 ) and having the following diagnostic characters: unique, distinctly humpbacked scutum in lateral view (Fig. 7A ); aedeagus characterized by large, vault-like arch (Fig. 7H, I ); and large, spoon-shaped paramere densely hirsute on inner surface (Fig. 7H, I ). It resembles De. formosa , De. jacobsoni , De. serripenis sp. nov., and De. discontinua sp. nov. in wing marking pattern, but can be distinguished from them by much more (approximately 24) pale spots (Fig. 7C ).

Description.

(♂, ♀; not repeating characters common to De. acutipenis sp. nov.). Head (Fig. 7A, B ): Ocellar setae located just inside triangle made by ocelli. Frons with blackish brown stripes. Face grayish yellow to blackish brown; carina broad, dorsally strongly swollen and blackish brown, medially yellowish brown, ventrally nearly flat, black and with broad, pale yellow, traverse band. Clypeus blackish yellow. Gena pale yellow, ventrally black. Palpus gray, paddle-shaped in ventral view, with one prominent apical seta and several ventral ones. Antennal pedicel long triangular, black, laterally with yellowish patch; 1st flagellomere long, somewhat triangular, black, with pale patch on inner, dorsal margin; arista with brown dorsal and ventral branches nearly as long as whitish trunk.

Thorax (Fig. 7A, B ): Scutum, scutellum, and thoracic pleura grayish yellow. Scutum with blackish brown to black, longitudinal stripes interweaved with each other. Scutellum medially with blackish brown to black patch merged with lateral black spots covering bases of ipsilateral scutellar setae. Acrostichal setulae in two vestigial rows. Dorsocentral setae three pairs; anteriormost pair distinctly shorter and thinner, located slightly anterior to transverse suture and more widely separated from each other. Basal scutellar setae divergent.

Wing (Fig. 7C ): Veins brown. R2+3 not waved medially, strongly curved to costa apically. R4+5 and M1 veins distally nearly parallel with each other.

Legs (Fig. 7A ) yellow to pale brown.

Abdomen (Fig. 7D, E ): Tergites blackish brown.

Male terminalia (Fig. 7F-I ): Epandrium nearly completely smooth, with two setae per side on ventral portion; ventral lobe very small; somewhat triangular apodeme present on anteromedial margin. Surstylus with a row of approximately six prensisetae on distal margin, approximately four thick, short setae on submedial to ventral portion of outer surface and a few trichoid setae around caudoventral corner. Cercus broadly fused to epandrium, large, somewhat fan-shaped, caudoventrally not pointed, nearly smooth, with approximately 25 short setae. Hypandrium broad, anteriorly rounded, with triangular apodeme. Aedeagus bilobed; apodeme approximately 1/2 as long as aedeagus.

Female terminalia (Fig. 7J-L ): Oviscapt with three lateral trichoid and 12 or 13 marginal, apically somewhat blunt peg-like ovisensilla. Spermathecal capsule spherical, strongly constricted near base; introvert ca. 3/5 height of outer capsule.

Measurements: BL = 1.54 mm in holotype (1♀ paratype: 1.70 mm); ThL = 0.57 (0.65) mm; WL = 1.42 (1.53) mm; WW = 0.72 (0.72) mm.

Indices: arb = 4/2 (1♀: 4/2), FW/HW = 0.65 (0.64), ch/o = 0.41 (0.48), prorb = 0.71 (n/a), rcorb = 0.18 (0.15), vb = 0.34 (0.29), dc1l = 0.36 (0.28), dc2l = n/a (0.72), sctl = 0.94 (0.95), sterno = n/a (0.80), orbito = 0.18 (0.21), dc1p = 0.39 (0.32), dc2p = 0.67 (0.62), sctlp = 1.14 (1.00), C = 0.94 (0.90), 4c = 2.75 (2.60), 4v = 3.00 (2.73), 5 × = 1.85 (1.63), ac = 4.21 (4.17), M = 1.04 (0.87), C3F = 0.34 (0.50).

Distribution.

China (Yunnan).

Etymology.

A combination of the Greek words camelos and notos, referring to the humped, camel-like notum.

Figures

Figure 7. Dettopsomyia camelonota Wang, Li & Gao, sp. nov. (A-I # 01607, J-L paratype # 01608) A left lateral habitus B head and thorax (dorsal view) C wing (right, dorsal view) D abdomen (lateral view) E abdomen (dorsal view) F periphallic organs (posterolateral view) G surstylus H phallic organs (ventral view) I phallic organs (dorsolateral view) J oviscapt (lateral view) K oviscapt (ventral view) L spermatheca. Scale bars: 1.0 mm (photograph) or 0.1 mm (line drawing).