Amiota (Amiota) longispinata 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 : 281-283

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

( Figure 8 )

Diagnosis. Paramere and aedeagus slender, slightly curved ventrally, pointed apically; paramere much sclerotized distally, with a sensillum subbasally ( Figure 8D, E ).

Description

Wing. Wing with ca 18–21 minute, peg-like spinules on ventral surface of costal vein between R 2+3 and R.

4+5

Male terminalia. Epandrium constricted more than one-half width mid-dorsally, with ca 12 setae near posterior to ventral margins ( Figure 8A ). Surstylus pubescent, with three aristate processes basally fused to each other and forming palm-like lobe on mesal surface, fingerlike process at postero-ventral corner, ca 9–10 long prensisetae on distal margin, and a few, stout spine-like setae on inner surface ( Figure 8B ). Anterior portion of hypandrium slightly broadened at middle. Vertical lobe of gonopod with two sclerotized basally fused to M-shaped processes ( Figure 8C ). Paramere basally articulated with aedeagus. Aedeagus separated into one pair of processes two-thirds as long as paramere, slightly sclerotized, somewhat expanded subbasally ( Figure 8D, E ); outer membrane high and erected basally. Ejaculatory apodeme: apical plate with ca five pits on each lateral margin; stalk thick ( Figure 8F ).

Measurements. BL 52.87 mm in holotype (7 „ paratypes: 2.87–3.26); ThL 51.25 mm (1.00–1.30); WL 52.46 mm (2.13–2.53); WW 51.15 mm (1.04–1.15).

Indices. arb55/3 (4–5/2–3), avd50.90 (0.70–0.90), adf51.20 (1.20–1.50), flw51.50 (1.50–1.80), FW/HW50.35 (0.35), ch/ o50.05 (0.05), prorb51.00 (1.00), rcorb50.85 (0.70–0.85), vb50.40 (0.35–0.45), dcl50.55 (0.55–0.60), presctl50.60 (0.60–0.65), sctl51.20 (1.10–1.30), sterno50.90 (0.85–0.95), orbito51.60 (1.60–1.80), dcp50.33 (0.30–0.35), sctlp51.10 (1.00–1.10), C51.77 (1.73–1.93), 4c51.67 (1.47–1.88), 4v52.61 (2.42–3.07), 5x51.63 (1.56–1.88), ac55.00 (3.88–4.67), M50.72 (0.63– 0.93), C3F50.65 (0.66–0.71).

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

PARATYPES: 15 „, same data as the holotype except for 18 August 2000, L.-P. He, J.-G. Xiangyu, H. Takamori, H. Watabe and H.-W. Chen leg. ( KIZ, DBSU and SEHU); 1 „: Yunnan: Bamboo Temple, 31 July 2000, J.-J. Gao leg. ( KIZ) .

Distribution. China (Yunnan).

Relationship. This species is similar to A. (A.) aristata in the shape of aedeagus, but is distinguishable from it by the slender paramere with a sensillum (paramere thick, short, with ca seven sensilla in aristata ).

Etymology. Referring to the long and pointed paramere.

5. The taurusata species-group

Amiota (Amiota) taurusata species-group, Chen and Toda, 2001: 1536.

Diagnosis. Hind femur with small, lobe-like flap baso-ventrally; fourth tergite laterally broadened and protruded more than others.

Remarks. Chen and Toda (2001) designated two characters to the diagnosis of this group: (1) hind tibia apico-dorsally much extended like flap and (2) first tarsomere of hind leg expanded dorsally, both of which are absent in the following three new species. Thus, two characters should be eliminated from the diagnosis of the taurusata species-group proposed by Chen and Toda (2001).

Distribution. Oriental region (North) and Palaearctic region (East to North-East Asia).

Figures

Figure 8. Amiota (Amiota) longispinata Chen and Gao, sp. nov. „ (see Figure 4 for further explanation).