Stegana (Orthostegana) latipalpula 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/6B3DAB9F-EB8C-432F-984FEB6996BE0112
taxon LSID	lsid:zoobank.org:act:6B3DAB9F-EB8C-432F-984FEB6996BE0112
treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Stegana (Orthostegana) latipalpula Peng & Chen
status	sp. nov.

Treatment

3.2.1.5. Stegana (Orthostegana) latipalpula Peng & Chen sp. nov.

Figs 7A View Figure 7 , 7B View Figure 7 , 10A View Figure 10 , 11C View Figure 11 , 16 View Figure 16

Diagnosis.

This species differs from the other Orthostegana species in having the postocellar setae; palpus expanded (Fig. 11C View Figure 11 ); mesotarsus ventrally with 2 rows of black, apically blunt, stout spines; metatarsus with 19/6+1 spines; 2nd to 4th segments with 1/1/1, 2/1/1, and 1/1/1 spines, respectively (Fig. 10A View Figure 10 ); Pregonites large, with 1 sensillum submedially per side (Fig. 16C, D View Figure 16 ); aedeagus short, with some minute, serrated processes distally, lacking hair or pubescence (Fig. 16C, D View Figure 16 ); gonopod strongly protruded and with numerous minute, serrated processes distally (Fig. 16C, D View Figure 16 ).

Description.

Male. Head: Ocellar triangle brown, with 2 small setae posterior to ocellar setae. Frons brown, with numerous minute interfrontal setulae. Pedicel and first flagellomere brown distally, with black pubescence. Face and gena brownish yellow. Clypeus and palpus yellow. Thorax: Mesonotum yellow (Fig. 7A View Figure 7 ). Pleura with a distinct brownish yellow longitudinal stripe above (Fig. 7B View Figure 7 ). Scutellum yellow(Fig. 7A View Figure 7 ). Halter mostly yellow (Fig. 7A, B View Figure 7 ). Legs yellowish (Fig. 10A View Figure 10 ). Abdominal tergites: yellow. Male terminalia: Epandrium mostly pubescent except for anterior margin, with ca. 21 setae on dorsal to posterior portions per side (Fig. 16A View Figure 16 ). Surstylus separated from epandrium, with numerous peg-shaped prensisetae near anterior margin on inner surface and some setae ventrally (Fig. 16B View Figure 16 ). Pregonites separated (Fig. 16C, D View Figure 16 ).

Measurements and indices.

BL = 3.60 mm in holotype, ThL = 1.60 mm, WL = 3.48 mm, WW = 1.48 mm, arb = 5/3, avd = 1.00, adf = 1.00, flw = 2.00, FW/HW = 0.45, ch/o = 0.14, prorb = 1.05, rcorb = 0.52, vb = 0.42, dcl = 0.39, presctl = 0.33, sctl = 1.14, sterno = 1.07, orbito = 1.29, dcp = 0.21, sctlp = 1.13, C = 2.25, 4c = 1.05, 4v = 2.11, 5x = 1.50, ac = 10.00, M = 0.63, C3F = 0.50.

Distribution.

China (Sichuan).

Type material examined.

Holotype: ♂ (SCAU, No. 112084), China: Wanba, Jiulong, Sichuan, 29°03′08″N, 101°59′50″E, altitude 2470 m, 5.vii.2017, swept from tussock, N.N. Wang.

Etymology.

A combination of the Latin words " latus " (= broad) and " palpulus " (= palpus), referring to the expanded palpus.