Stegana (Orthostegana) cuodi Peng & Chen, 2023

Wang, Ya-Lian, Peng, Zi-Qi, Jin, Feng-Liang, Chen, Hong-Wei & Huang, Jia, 2023, Integrative species delimitation in the morphologically conservative Stegana subgen. Orthostegana (Diptera, Drosophilidae), Arthropod Systematics & amp; Phylogeny 81, pp. 581-610 : 581

publication ID	https://dx.doi.org/10.3897/asp.81.e102683
publication LSID	lsid:zoobank.org:pub:CA56E9F0-B426-4014-B20B-D7C455FD65A7
persistent identifier	https://treatment.plazi.org/id/9C24B0AD-E0E9-4D9F-8394-2D56913037A6
taxon LSID	lsid:zoobank.org:act:9C24B0AD-E0E9-4D9F-8394-2D56913037A6
treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Stegana (Orthostegana) cuodi Peng & Chen
status	sp. nov.

Treatment

3.2.1.3. Stegana (Orthostegana) cuodi Peng & Chen sp. nov.

Figs 6A-D View Figure 6 , 9I View Figure 9 , 14 View Figure 14

Diagnosis.

This species closely resembles S. (O.) brevivittata sp. nov. in the shape of male terminalia (Figs 13 View Figure 13 , 14 View Figure 14 ), but can be distinguished from the latter by having the mesotarsus ventrally with 2 rows of black, apically blunt, stout spines; metatarsus with 12/1+1 spines; 2nd to 4th segments with 2/1, 2/1, and 2/1 spines, respectively (Fig. 9I View Figure 9 ); pregonite with ca. 4 sensilla distally (Fig. 14C, D View Figure 14 ).

Description.

Male and female. Head: Ocellar triangle dark brown, with 2 small setae posterior to ocellar setae. Postocellar seta absent. Frons brown, with numerous minute interfrontal setulae. Pedicel brownish yellow; first flagellomere dark brown distally, with black pubescence. Face yellow. Gena brownish yellow. Clypeus brownish to dark brown. Palpus brownish yellow. Thorax: Mesonotum yellow (Fig. 6A, C View Figure 6 ). Pleura with a distinct brown longitudinal stripe above (Fig. 6B, D View Figure 6 ). Scutellum mostly yellow (Fig. 6A, C View Figure 6 ). Halter mostly brownish, with a yellow patch at knob (Fig. 6A-D View Figure 6 ). Legs yellowish (Fig. 9I View Figure 9 ). Abdominal tergites: brownish. Male terminalia: Epandrium mostly pubescent except for anterior margin, with ca. 21 setae on dorsal to posterior portions per side (Fig. 14A View Figure 14 ). Surstylus separated from epandrium, narrowed dorsally, with ca. 14 long and 9 short peg-shaped prensisetae near anterodorsal margin on inner surface, lacking seta (Fig. 14B View Figure 14 ). Pregonites fused basally (Fig. 14C, D View Figure 14 ). Aedeagus pubescent distally, with some hairs ventrally and apically (Fig. 14C, D View Figure 14 ).

Measurements and indices.

BL = 3.47 mm in holotype (range in 5♂ and 2♀ paratypes: 2.67-3.43 in ♂, 3.02-3.51 in ♀), ThL = 1.44 mm (1.07-1.50 in ♂, 1.33-1.47 in ♀), WL = 2.60 mm (2.07-2.67 in ♂, 2.13-2.47 in ♀), WW = 1.17 mm (1.00-1.10 in ♂, 1.07 in ♀), arb = 8/5 (5-7/3-5), avd = 1.00 (0.57-1.11), adf = 1.88 (1.67-2.80), flw = 2.13 (1.67-2.60), FW/HW = 0.44 (0.47-0.54), ch/o = 0.15 (0.09-0.12), prorb = 1.00 (0.72-1.00), rcorb = 0.70 (0.56-0.81), vb = 0.62 (0.50-0.60), dcl = damaged (0.31-0.47), presctl = damaged (0.42-0.47), sctl = damaged (1.14-1.30), sterno = 0.81 (0.63-0.86), orbito = 2.00 (1.60-2.00), dcp = 0.29 (0.21-0.29), sctlp = 0.92 (0.80-1.20), C = 2.25 (2.16-3.40), 4c = 0.91 (0.74-0.94), 4v = 1.68 (1.45-1.89), 5x = 1.13 (1.00-1.60), ac = 10.00 (8.00-11.33), M = 0.41 (0.35-0.44), C3F = 0.80 (0.56-0.82).

Distribution.

China (Yunnan).

Type material examined.

Holotype: ♂ (SCAU, No. 112209), China: Guanlei, Mengla, Yunnan, 21°38′39″N, 101°09′52″E, altitude 562 m, 20.iv.2016, swept from tree trunk, Y.Q. Liu. Paratypes: 2♂ (SCAU, Nos. 112210, 11), J. Huang, Y.Q. Liu, other data same as the holotype; 2♀ (SCAU, Nos. 112212, 13), Likan, Ximeng, Yunnan, 22°39′21″N, 99°36′28″E, altitude 840 m, 1.v.2016, swept from tussocks, J. Huang; 8♂ (SCAU, Nos. 112214-21), Guanlei, Mengla, Yunnan, 21°38′39″N, 101°09′52″E, altitude 560 m, 20.iv.2016, swept from tussocks, Y.Q. Liu, J. Huang.

Etymology.

From the word " cuodi " in Dai language from the Dai nationality living in Yunnan, China, referring to the meaning "good luck".