Amiota (Amiota) brevipartita Chen and Gao, 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 : 276-277

Amiota (Amiota) brevipartita Chen and Gao , sp. nov.

( Figure 4 )

Diagnosis. Paramere less sclerotized, broadened distally in lateral view, with ca five to seven sensilla and with several tiny setulae submedially, basally fused to each other ( Figure 4D, E ); aedeagus half as long as paramere, much sclerotized, with one pointed process apically

( Figure 4D, 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

Male terminalia. Epandrium constricted heavily (about one-half width of mid-dorsal), with ca 15 setae near posterior to ventral margins ( Figure 4A ). Surstylus entirely pubescent, basally with two aristate processes fused to each other and forming palm-like lobe on mesal surface, finger-like process at postero-ventral corner, ca nine long prensisetae on distal margin, and a few stout, spine-like setae on inner surface ( Figure 4B ). Anterior portion of hypandrium slightly broadened at middle. Vertical lobe of gonopod with two sclerotized basally fused M-shaped processes ( Figure 4C ). Paramere articulated with aedeagus at base ( Figure 4D ). Aedeagus separated into two triangular-like processes ( Figure 4E ); outer membrane high and erected basally. Ejaculatory apodeme: apical plate with ca eight pits on each lateral margin; stalk thick, extremely long ( Figure 4F ).

Measurements. BL53.00 mm in holotype (4 „ paratypes: 3.06–3.20); ThL 51.30 mm (1.27–1.34); WL 52.50 mm (2.50–2.67); WW 51.20 mm (1.17–1.27).

Indices. arb55/3 (4–5/2–3), avd50.83 (0.91), adf51.30 (1.20–1.30), flw51.50 (1.50– 1.60), FW/HW50.35 (0.35), ch/ o50.06 (0.06), prorb51.00 (1.00), rcorb50.90 (0.80), vb50.35 (0.35–0.40), dcl50.55 (0.55), presctl50.65 (0.60), sctl51.10 (1.10–1.20), sterno50.85 (0.90–1.00), orbito51.40 (1.30), dcp50.35 (0.35), sctlp51.00 (1.00), C51.90 (1.75–1.89), 4c51.40 (1.41–1.47), 4v52.40 (2.41–2.45), 5x51.67 (1.57–1.70), ac54.20 (4.00–4.67), M50.67 (0.65–0.85), C3F50.55 (0.63).

HOLOTYPE: „, Yunnan: Mt Jizu , 17 August 2000, H.-W. Chen leg. ( KIZ).

PARATYPES: 2 „, same data as the holotype ( KIZ and SEHU); 2 „, Yunnan: Lake Lugu , 22– 27 July 2001, J.-J. Gao and H. Watabe leg. ( DBSU) .

Distribution. China (Yunnan). Relationship. This species somewhat resembles A. (A.) palpifera in having the lesssclerotized paramere, but is distinguishable from it by the relatively short aedeagus (same length of paramere in palpifera ).

Etymology. Referring to the aedeagus shorter than paramere.

Figures

Figure 4. Amiota (Amiota) brevipartita Chen and Gao, sp. nov. „. (A) Epandrium and cercus, lateral view; (B) surstylus and tenth sternite, ventral view; (C) hypandrium and gonopod, ventral view; (D, E) paramere, aedeagus and aedeagal apodeme: (D) ventral view, (E) lateral view; (F) ejaculatory apodeme. Scale bars: 0.1 mm.