Echinoaesalus sabahensis Zelenka 1994

Echinoaesalus sabahensis Zelenka, 1994

(Figs. 4, 12–13, 49, 68, 74, 87, 99)

Material. MALAYSIA: 1 ♂ (L14), BORNEO, Sabah, Crocker range, Gunung Emas, VI.1998, Kodada.

Remarks. The following male characters of E. sabahensis have not been described before. Third antennomere (Fig. 4) more elongate than in E. timidus, E. gedeensis, and E. cechovskyi (described below). Labium, maxilla, and hindwing as in other species of the E. timidus group. The 9th abdominal segment of male (Fig. 87) with a very long basal lobe which is at least three times as long as that of other species of the subgenus Zelenkaesalus.

Male genitalia (Fig. 99). Since E. timidus is known to be very variable in mentum and pronotal plate, it is rather difficult to identify the specimens of E. sabahensis without a dissection. The aedeagus of E. sabahensis has been illustrated as a rough hand drawing in the original description (Zelenka 1994), which shows the following characters: parameres half as long as the dorsal side of median lobe; dorsal side of median lobe enlarged from base to terminal end in width and broadly rounded at the end. The aedeagus of the specimen examined by us (Fig. 99) fits the original figure (Zelenka 1994) very well. Beside this, the following characters are also noted: size of aedeagus similar to that of E. gedeensis (Fig. 102) and E. cechovskyi (Fig. 101), but markedly larger than that of E.

timidus (Figs. 93–98, 100); lateral sides of the median lobe broadly colorless and non-sclerotized, causing a ventral plate well defined; ventral plate of median lobe contracted at base and broadly rounded, markedly wider than in other species of the subgenus Zelenkaesalus.

Distribution. Only known from Borneo.