Stegana (Steganina) cultella Cui & Chen

WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), Zootaxa 5250 (1), pp. 1-109 : 64-65

publication ID	https://doi.org/10.11646/zootaxa.5250.1.1
publication LSID	lsid:zoobank.org:pub:4729EAF3-8B78-4AAD-B373-9179D008F239
DOI	https://doi.org/10.5281/zenodo.7705575
persistent identifier	https://treatment.plazi.org/id/0393914C-2A1D-8738-C282-FD3A6DACF9C6
treatment provided by	Plazi (2023-03-07 08:36:00, last updated 2024-11-28 17:29:29)
scientific name	Stegana (Steganina) cultella Cui & Chen
status	sp. nov.

Treatment

Stegana (Steganina) cultella Cui & Chen View in CoL , sp. nov.

( Figs. 7E, 7F View FIGURE 7 , 34 View FIGURE 34 )

Diagnosis. This species resembles S. (S.) fusca sp. nov. in the small body size (BL ranged from 2.12–2.39 mm in measured specimens) and the relatively light body color ( Figs. 7E, 7F View FIGURE 7 , 8I, 8J View FIGURE 8 ), but can be distinguished from the latter by having the cercus with much pubescence ( Fig. 34A View FIGURE 34 ); the aedeagus dramatically expanded distally, lacking pubescence ( Fig. 34C, D View FIGURE 34 ).

Description. Male: First flagellomere black. Clypeus yellow. Mesonotum and scutellum brownish yellow ( Fig. 7E, F View FIGURE 7 ). Katepisternum yellow ( Fig. 7F View FIGURE 7 ). Halter mostly yellow, with a brownish patch at knob ( Fig. 7E View FIGURE 7 ). Fore femur with a row of 3 long setae on distal part of posteroventral surface. Abdominal tergites brown medially, brownish near distal margin ( Fig. 34A, B View FIGURE 34 ). Hypandrium roundly expanded anteromedially ( Fig. 34C, D View FIGURE 34 ). Pregonite with 7 sensilla ( Fig. 34C, D View FIGURE 34 ). Aedeagal sheath distally dorsad curved ( Fig. 34E, F View FIGURE 34 ). Subepandrial sclerite slightly vaulted, broadened distally ( Fig. 34G View FIGURE 34 ).

Measurements and indices. BL = 2.39 mm in holotype (2.12 in 1♂ paratype), ThL = 1.21 mm (0.88), WL = 2.36 mm (1.46), WW = 1.00 mm (0.64), arb = 7/5 (7/5), avd = 0.89 (0.83), adf = 1.37 (1.50), flw = 2.68 (3.00), FW/ HW = 0.36 (0.30), ch/o = 0.15 (0.15), prorb = 0.95 (1.00), rcorb = 0.74 (0.67), vb = 0.83 (0.71), dcl = 0.58 (0.56), presctl = 0.49 (0.45), sctl = 2.90 (2.50), sterno = 0.88 (0.73), orbito = 1.65 (1.72), dcp = 0.35 (0.31), sctlp = 1.93 (2.25), C = 1.67 (1.67), 4c = 1.21 (1.09), 4v = 1.75 (1.50), 5x = 1.60 (1.60), ac = 10.89 (12.00), M = 0.59 (0.36), C3F = 0.62 (0.67).

Type materials. Holotype ♂ ( SCAU, No. 125729, DNA #2743), CHINA: Menglun, Mengla , Yunnan, 21°47'29''N, 101°22'59''E, alt. 580m, 19.iv.2007, ex tree trunk, H.W. Chen GoogleMaps . Paratype: 1♂ ( SCAU, No. 121114), other data same as holotype. GoogleMaps

Distribution. China (Yunnan).

Etymology. From the Latin word " cultellus " (= knife), referring to the knife-liked facial carina.

Figures

FIGURE 7. Head, thorax, and abdomen in dorsal and lateral views: A, B. Stegana (Steganina) cornuta Li & Chen, sp. nov.; C, D. S. (S.) cucullata Li & Chen, sp. nov.; E, F. S. (S.) cultella Cui & Chen, sp. nov.; G, H. S. (S.) curvitabulata Cui & Chen, sp. nov.; I, J. S. (S.) daiya Cui & Chen, sp. nov.

FIGURE 8. A, B. Stegana (Steganina) dendrophila Zhang & Chen, sp. nov.; C, D. S. (S.) flabella Li & Chen, sp. nov.; E, F. S. (S.) flavipes Li & Chen, sp. nov.; G, H. S. (S.) formosa Zhang & Chen, sp. nov.; I, J. S. (S.) fusca Li & Chen, sp. nov.

FIGURE 34. Stegana (Steganina) cultella Cui & Chen, sp. nov., male terminalia.A. Epandrium, surstylus, and cercus in lateral view; B. Surstylus in ventral view; C, D. Hypandrium, pregonite, aedeagus, and phallapodeme in ventral and lateral views; E, F. Aedeagal sheath in ventral and lateral views; G. Subepandrial sclerite in ventral view.