Amiota obtusa, Wang & Cao & Chen, 2020

Wang, Ya-Lian, Cao, Hui-Luo & Chen, Hong-Wei, 2020, Molecular phylogeny and species delimitation of Amiota alboguttata and Amiota basdeni species groups (Diptera: Drosophilidae) from East Asia, Zoological Journal of the Linnean Society 189, pp. 1370-1397 : 1383

AMIOTA OBTUSA SP. NOV.

( FIG. 6)

urn:lsid:zoobank.org:act:A1D66239-F98B-4E23-9ABB-4DF6611BCBEA

Holotype: SCAU, DIP 112277 , ♂ (5 July 2017).

Type locality: China: Wanba, Jiulong , Sichuan, 28°58′03″N, 101°59′22″E, elevation 2470 m, Y.L. Wang .

Paratypes: SCAU, DIP 112278 , 79 , two ♂ (4 June 2018). China: Gexigou, Yajiang , Sichuan, 30°02′32″N, 100°59′04″E, elevation 2800 m, L. Gong .

Etymology: From the Latin obtusus, meaning dull or blunt, referring to the blunt apical vertical lobe of the gonopod.

Diagnosis: This species resembles A. nuerhachii in the shape of the gonopod, but can be distinguished from it by the aedeagus distally with a slight upward curve ( Fig. 6D). In A. nuerhachii , the aedeagus is not bent (as shown by Chen & Toda, 2001: fig. 11).

Measurements and indices: BL = 3.57 mm (2.63– 2.95 mm in two ♂ paratypes), ThL = 1.65 mm (1.32–2.01 mm), WL = 2.79 mm (2.46–2.54 mm), WW = 1.39 mm (1.18–1.25 mm), arb = 5/4 (4/4–5), avd = 0.50 (0.29–0.55), adf = 1.03 (0.67–1.26), flw = 1.45 (1.03–1.24), FW/HW = 0.41 (0.41–0.44), ch/o = 0.11 (0.12–0.15), prorb = 0.98 (0.99–1.10), rcorb = 0.83 (0.77–0.83), vb = 0.29 (0.28–0.36), dcl = 0.63 (0.63– 0.66), presctl = 0.61 (0.44–0.54), sctl = 1.18 (1.07–1.11), sterno = 0.91 (0.86–0.91), orbito = 1.79 (1.80–1.82), dcp = 0.28 (0.28–0.30), sctlp = 0.83 (0.92–1.01), C = 2.03 (2.02–2.25), 4c = 1.50 (1.38–1.48), 4v = 2.71 (2.71–2.74), 5x = 1.21 (1.18–1.49), ac = 4.18 (3.75–4.08), M = 0.68 (0.63–0.77), C3F = 0.54 (0.44–0.59).

Description

Male terminalia ( Fig. 6A–D): Epandrium entirely separated mid-dorsally, with ~20 setae near posterior margin per side. Surstylus pubescent medially, with four or five long prensisetae on distal margin, several thin setae on ventral margin and outer surface. The tenth sternite is laterally fused to surstyli. Anterior portion of hypandrium thin. Paramere lobe shaped, pointed apically, with two processes laterally and five or six sensilla medially. Aedeagus separated into one pair of simple rods, each fused to the base of the parameres. Aedeagal apodeme strongly curved.