Stegana (Steganina) nulliseta, Cheng, Gao & Chen, 2009

Cheng, Yu, Gao, Jian-Jun & Chen, Hong-Wei, 2009, Stegana ornatipes species group from the Oriental Region (Diptera: Drosophilidae), Zootaxa 2216 (1), pp. 37-48 : 44-45

publication ID

https://doi.org/ 10.11646/zootaxa.2216.1.3

DOI

https://doi.org/10.5281/zenodo.5334570

persistent identifier

https://treatment.plazi.org/id/039987AC-FFC5-FF85-FF31-70BEC24193D6

treatment provided by

Felipe

scientific name

Stegana (Steganina) nulliseta
status

sp. nov.

Stegana (Steganina) nulliseta View in CoL sp. nov.

( Figs 19–22 View FIGURES 19–22 )

Specimens examined. Holotype: ♂ ( SCAU, No. 120652), CHINA: Mengla, Xishuangbanna , Yunnan, 600 m, ex tussock, 23.iv.2007, JJ Gao . Paratypes: CHINA: 3♂ (2♂ in KIZ, 1♂ in SCAU, No. 120653), same data as holotype, 21–24.iv.2007, HW Chen, JJ Gao .

Diagnosis. Aedeagus composed of 1 pair of small, rod-like processes, 2 pairs of lobe-like processes bearing several sclerotized, serrated projections and 1 arcuate process ( Fig. 22 View FIGURES 19–22 ); gonopods with only 1 acute projection medially ( Fig. 22 View FIGURES 19–22 ).

Description. Male and female: Pedicel grey-yellow; first flagellomere mostly black. Palpus almost black. Katepisternum dark brown on upper part, white on lower part. Legs mostly brown, dark on basal part of all 1st tarsomeres, pale on the rest tarsomeres, white on basal parts of fore femur and distal part of mid tibia. Male terminalia: Epandrium with approximately 16 setae near posterior to ventral margin on each body-side ( Fig. 19 View FIGURES 19–22 ). Surstylus thin on distal 1/3 ( Figs 19, 20 View FIGURES 19–22 ). Cercus lacking pubescence ( Fig. 19 View FIGURES 19–22 ). Plate between hypandrium and aedeagus lacking pubescence ( Fig. 22 View FIGURES 19–22 ).

Measurements: BL = 2.31 mm in holotype (range in 3♂ paratypes: 2.22–2.47 mm); ThL = 1.13 mm (1.00– 1.13 mm); WL = 1.88 mm (1.68–1.88 mm); WW = 1.02 mm (0.88–1.04 mm). Indices: arb = 8/7 (7–8/ 6–7), avd = 0.85 (0.71–0.79), adf = 1.18 (1.17–1.27), flw = 1.82 (1.67–2.00), FW/HW = 0.37 (0.36–0.39), ch/ o = 0.09 (0.07–0.09), prorb = 1.14 (1.10–1.20), rcorb = 0.81 (0.71–0.80), vb = 0.28 (0.24), dcl = 0.39 (0.39– 0.50), presctl = 0.64 (0.63), sctl = 1.76 (1.43–1.46), sterno = 0.87 (0.88), orbito = 2.17 (2.00–2.50), dcp = 0.21 (0.18–0.21), sctlp = 1.00 (1.00–1.19), C = 1.86 (1.88–2.00), 4c = 1.22 (1.23–1.30), 4v = 1.74 (1.82–1.90), 5x = 1.40 (1.20–1.22), ac = 9.33 (8.67–9.00), M = 0.61 (0.55–0.57), C3F = 0.66 (0.63–0.70).

Distribution. China (Yunnan).

Etymology. A combination of the Latin words: nullus and setae, referring to the cercus lacking pubescence.

KIZ

Kunming Institute of Zoology, Chinese Academy of Sciences

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Drosophilidae

Genus

Stegana

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