Amiota (Amiota) planata, 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 : 1525-1526

Amiota (Amiota) planata sp. nov.

(figure 4)

Diagnosis. Arms of aedeagal apodeme protruded ventrad, nearly to level of apices parameres and vertical lobe of gonopod (figure 4C, D).

Description. Male: Postocellar setae absent. Ocellar triangle and upper two-thirds of frontal vitta brownish black; lower one-third of frontal vitta and fronto-orbital plate orange brown. Face brown on upper half. Gena orange brown.

Wing with 14–15 distinct, peg-like spinules on ventral surface of costal vein between R and R.

2+3 4 +5

Fig. 4. Amiota (Amiota) planata sp. nov., a paratype from Ryukyu Is., Japan: (A) epandrium (epand) and cercus (cerc); (B) surstylus (sur) and tenth sternite (st 10); (C) hypandrium (hypd), gonopo d (gon), parameres (pm), aedeagus (aed) and aedeagal apodeme (aed a) (ventral view); (D) hypandrium, gonopod, parameres, aedeagus and aedeagal apodeme (lateral view); (E) ejaculatory apodeme (scale-line =0.1 mm) .

Legs: Mid tarsus with two rows of minute, cuneiform setulae on posteroventral surfa ce.

Male terminalia: Epandrium small, constricted more than one-half width middorsally, with 12–14 setae near posterior to ventral margins (figure 4A). Surstylus lacking pubescence, with fi nger-like process at posteroventral corner, about seven prensisetae on distal margin, and a few stout, spine-like setae on inner surface figure 4B). Tenth sternite entirely fused to surstyli laterally, lacking lobe-like processes (figure 4B). Hypandrium separated into two lateral arches narrowly at middle anterior portion (figure 4C). Gonopods anteriorly forming vertical lobe lining closely aedeagus (figure 4D). Parameres subbasally fused to each other (figure 4C). Aedeagus single, somewhat sclerotized, spoon-shaped lobe, basally fused to apodeme figure 4D). Aedeagal apodeme nearly straight (figure 4D). Ejaculatory apodeme: apical plate with two pits per side; stalk thick, short (figure 4E).

Measurements: BL (body length) =2.20 mm in the holotype (range in 4 paratypes: 2.60–2.80); ThL (thorax length) =1.04 mm (1.20–1.24); WL (wing length) = 1.80 mm (2.10–2.12); WW (wing width) =0.80 mm (0.92–1.00).

Indices: arb =5 / 3 (5 / 3), avd =1.00 (1.00), adf =2.00 (2.00), w =1.80 (1.80), W / H W =0.30 (0.30), ch / o =0.09 (0.09), prorb =1.00 (0.95–1.00), rcorb =0.90 0.85–0.90), vb =0.40 (0.40), dcl =0.50 (0.50–0.65), presctl =0.55 (0.55–0.60), sctl =1.00 (0.96–1.00), sterno =1.00 (0.90–1.00), orbito =2.00 (2.00), dcp = 0.28 (0.28), sctlp =1.20 (1.10–1.20), C =1.24 (1.24–1.47), 4 c =1.89 (1.80–1.90),