Amiota (Amiota) yixiangna Chen and Takamori, 2005

Chen, Hong-Wei, Watabe, Hide-Aki, Gao, Jian-Jun, Takamori, Hisaki, Zhang, Ya-Ping & Aotsuka, Tadashi, 2005, Species diversity of the subgenus Amiota (s. str.) Loew, 1862 (Diptera, Drosophilidae) in southern China, Journal of Natural History 39 (3), pp. 265-310 : 285-287

Amiota (Amiota) yixiangna Chen and Takamori , sp. nov.

( Figure 11 )

Diagnosis. Parameres fused to each other, pointed and sclerotized apically; aedeagus nearly entirely sclerotized,apically pointed,with one small, pointed process on left side ( Figure11D,E ).

Description

Wing. Wing with ca 18–20 minute, peg-like spinules on ventral surface of costal vein between R and R 4+5.

2+3

Leg. Leg yellow. Hind tibia apico-dorsally and first tarsomere dorsally nearly straight.

Male terminalia. Epandrium entirely separated laterally at mid-dorsal portion, with ca 10 setae near posterior to ventral margins ( Figure 11A ). Surstylus glabrous, with several setae on distal surface, finger-like process at postero-ventral corner, ca 9–10 long prensisetae on distal margin, and a few stout, spine-like setae on inner surface ( Figure 11B ). Anterior portion of hypandrium slightly broadened at middle. Vertical lobe of gonopod less sclerotized, roundish apically ( Figure 11C ). Outer membrane of aedeagus undeveloped. Ejaculatory apodeme small; apical plate with ca six pits on each lateral margin ( Figure 11F ).

Measurements. BL 52.78 mm; ThL 51.20 mm; WL 52.25 mm; WW 50.93 mm.

Indices. arb53–4/2–3, avd50.85, adf51.90, flw51.85, FW/HW50.35, ch/ o50.05, prorb51.00, rcorb50.85, vb50.35, dcl50.60, presctl50.55, sctl51.20, sterno50.90, orbito52.00, dcp50.20, sctlp51.00, C51.69, 4c51.60, 4v52.50, 5x51.60, ac54.57, M50.80, C3F50.69.

HOLOTYPE: „, Yunnan: Yixiang , 15 September 2002, H.-W. Chen leg. ( KIZ).

Distribution. China (Yunnan).

Relationship. This species is somewhat similar to A. (A.) asymmetrica sp. nov. in having the hind femur with small, lobe-like flap baso-ventrally, but can be clearly distinguished from it by the parameres fused to each other (separated from each other in asymmetrica ).

Etymology. In reference to the type locality.

6. The alboguttata species-group

Amiota (Amiota) alboguttata species-group, Chen and Toda, 2001: 1537.

Diagnosis. Hind tibia ventrally with a row of long setae; hind second to fifth tarsomeres broadened: second shorter than 1.5 times its width.

Distribution. Oriental region (North), Palaearctic region and Nearctic region (North America).

Figures

Figure 11. Amiota (Amiota) yixiangna Chen and Takamori, sp. nov. „ (see Figure 4 for further explanation).