Olidiana unidenta sp.nov.

Figs. 2 M, 5 M, 8 L, 39 A–I.

Male. Uniformly ochraceous brown; frontoclypeus reddish brown with median ochraceous stripe, infuscated aterally along frontal surures; clypellus reddish brown in basal half. Forewing venation dark brown with yellow speckles. Hind femur with apices, tibia and tarsal segments black, setae on hind tibia pale yellow (Figs. 2 M, 5 M, 8 L).

Male genitalia. Pygofer with long, narrow, sharply pointed caudoventral process (not reaching dorsal margin) (Figs. 39 H–I). Subgenital plate long, broad basally, slightly narrowed apically, with small hair-like setae on lateral margin (Fig.39 E). Style more or less L-shaped, apophysis as long as the basal width, in lateral view narrowed (Fig. 39 F). Connective Y-shaped, wider basally than long (Fig. 39 G). Aedeagus with angular projection at midlength visible in dorsal view, with short lateral subapical process bearing very fine teeth in distal half, gonopore arising at about 1/3 distal length of shaft and opening laterally (Figs. 39 A–D).

Measurements. Male 6.5−6.7 mm long, 1.8 mm wide across eyes and 2.0 mm wide across posterolateral angles of pronotum.

Material examined. HOLOTYPE ♂, INDIA: Assam: Margherita, 163.5m, 27 0 15’47.4” N, 095 0 45’59.8” E, 14.ix.2014, sweep net, Yeshwanth H.M. (USAB) . PARATYPE: INDIA: Assam: 1 ♂, West Bengal, Sukna, 1.xi.1981, S. Viraktamath (NPC) .

Etymology. The species name is descriptive for the angulate projection at midlength of aedeagal shaft.

Remarks. O. unidenta sp. nov. resembles O. perbrevis (Nielson) in the structure of the aedeagus but can be easily distinguished by the angulate projection at the shaft midlength (Fig. 39 A) and by the caudoventral pygofer process which is shorter and not exceeding the caudodorsal margin of pygofer (Fig. 39 I).