Roepkiella jakli, Yakovlev, 2020

Yakovlev, Roman V., 2020, Two new species of Roepkiella Yakovlev & Witt, 2009 (Lepidoptera, Cossidae) from Indonesia and Thailand, Ecologica Montenegrina 38, pp. 102-106 : 103-105

Roepkiella jakli sp. nov.

Figs 1−2 , 7

Material examined. Holotype, male, Indonesia, Sangir Isl. , Tahuna Distr. , Bukit Bembalut Hill, 600 m, 14−21.xi.2009, leg. St. Jakl (MWM, Slide Genitalpräparat Heterocera No 27.411) . Paratypes, 3 males, same locality and data (MWM) .

Description. Length of fore wing 18−20 mm. Antenna unipectinate, crest processes very short – about ½ of antenna rod diameter. Thorax covered with light-brown scales from above, medium part of thorax – with milky-white scales. Fore wing light-grey with dense pattern of thin transverse strokes and wavy lines, grey strokes along costal edge, light-brown portion discally (closer to hind edge, light portion in discal cell, brown portion postdiscally (medially), small brown spots at tops of veins on outer edge, fringe mottled: dark at veins, light between veins. Hind wing dark-grey, without pattern, fringe grey, unicolorous.

Male genitalia. Uncus triangle, long, apex uncinately bent, strongly sclerotized; gnathos arms thick, of medium length; gnathos of medium size; valve basally wide, gradually narrowing to apex, apex lanceolate, distal end of valve membranous, small dentate process on costal edge of valve (at transition of sclerotized part to membranous one); transtilla processes strongly sclerotized, apically sharp, gradually narrowing from base to apex, slightly curved in medium third; juxta scaphoid with strongly sclerotized lateral processes of medium length; saccus semicircular, of medium size; phallus robust, almost straight, of even thickness along the entire length, vesical aperture in dorso-apical position, takes about ¼ of phallus in length, vesica without cornuti.

Diagnosis. Concerning the distribution and morphology, the new species is mostly close to the endemic of Sulawesi – R. celebensis ( Roepke, 1957) (type locality: N. Celebes [ Indonesia, N. Sulawesi]) ( Figs 3−4 , 8 ) from which it differs in a series of characters :

- the light-grey portion on the discal cell (in R. celebensis , the portion is brown);

- the dark pattern of strokes on the fore wing postdiscally (in R. celebensis , there are thin dark bands);

- the transtilla processes slightly curved in medium third (in R. celebensis , the processes are almost straight).

Distribution. Sangir Island (North Sulawesi province, Indonesia).

Etymology. The new species is named after the well-known Czech entomologist Stanislav Jákl (Prague), the collector of the type series.

Figures

Figures 1−6. Adult specimens (males) of Roepkiella: 1. R. jakli sp. nov., holotype (MWM); 2. R. jakli sp. nov., paratype (MWM); 3. R. celebensis (Roepke, 1957), holotype (RMNH); 4. R. celebensis (Roepke, 1957), Z. Sulawesi, Kulawi, 1º26′S / 120ºE, 7−8.ii.1995, 1000 m, Tarasov & Sinjaev leg. (MWM); 5. R. korshunovi sp. nov., holotype (MWM); 6. R. korshunovi sp. nov., paratype (MWM).

Figures 7−9. Male genitalia of Roepkiella: 7. R. jakli sp. nov., holotype (Slide Genitalpräparat Heterocera No 27.411); 8. R. celebensis (Roepke, 1957), Z. Sulawesi, Kulawi, 1º26′S / 120ºE, 7−8.ii.1995, 1000 m, Tarasov & Sinjaev leg. (Slide Genitalpräparat Heterocera No 27.410); 9. R. korshunovi sp. nov., holotype (Slide Genitalpräparat Heterocera No 27.414).