Amiota (Amiota) aristata, On, 2001

Chen, Hong-Wei & Toda, Masanori J., 2001, A revision of the Asian and European species in the subgenus Amiota Loew (Diptera, Drosophilidae) and the establishment of species-groups based on phylogenetic analysis, Journal of Natural History 35 (10), pp. 1517-1563 : 1533-1535

Amiota (Amiota) aristata sp. nov.

(figure 7)

Diagnosis. Surstylus with palm-like lobe bearing about four aristate processes on mesal surface (figure 7B); paramere broad, but narrow apically, with about seven sensilla submedially (figure 7D, E).

Description. Male: Ocellar triangle and upper half of frontal vitta dark brown; lower half of frontal vitta and fronto-orbital plate brown. Gena yellowish brown.

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

2+3 4 +5

Legs: Mid tarsus with a row of minute cuneiform setulae on posteroventral surfa ce.

M ale terminalia: Epandrium constricted more than one-half width mid-dorsally, with about 15 setae near posterior to ventral margins (figure 7A). Surstylus nearly entirely pubescent, with fi nger-like process at posteroventral corner, about 11 long prensisetae on distal margin, and a few, stout spine-like setae on inner surface figure 7B). Tenth sternite deeply constricted mid-dorsally; lateral lobe-like process spherical (figure 7B). Anterior portion of hypandrium slightly broadened at middle figure 7C). Paramere basally articulated with aedeagus (figure 7D, E). Aedeagus separated into a pair of processes as long as paramere, medially to distally slender and strongly curved ventrad (figure 7D, E); outer membrane basally erected figure 7E). Ejaculatory apodeme: apical plate with fi ve pits per side (figure 7F); stalk thick, long (figure 7F).

Measurements: BL =3.35 mm (1 paratype: 2.88); ThL =1.35 mm (1.32); WL =2.66 mm (2.60); WW =1.18 mm (1.13).

Indices: arb =5 / 3 (5 / 3–4), avd =0.65 (0.65), adf =1.60 (1.55), w =1.45 (1.50), W / H W =0.36 (0.34), ch / o =0.09 (0.09), prorb =0.99 (0.98), rcorb =0.68 (0.65), =0.28, dcl =0.53 (0.48), presctl =0.67 (0.64), sctl =1.15, sterno =0.98 (0.97), orbito =2.00 (1.94), dcp =0.30 (0.32), sctlp =1.02 (1.10), C =1.63 (1.74), 4 c =2.00 1.73), 4 v =3.16 (2.82), 5 x =1.17 (1.33), ac =4.33 (3.80), M =0.74 (0.73), 3F =0.61 (0.66).

Hol ot ype:, China: Shennongjia , Hubei, 27 July 1992, M. J. Toda leg. ( DBSC) .

Par at ype: 1, same data as the holotype except 26 July 1992 ( EHU) .

Distribution. China (H ubei).

Relationship. This species is somewhat similar to A. clavata in the morphology paramere and aedeagus, but diVerent from it in the detailed structure of these two organs, which are lightly sclerotized and slender apically in this species, but strongly sclerotized and much dilated apically in A. clavata .

Etymology. In reference to the aristate processes on the surstylus.