View Image Gallery of Subfamily Rivulinae

Rivula rentoni sp. n.

Rivula rentoni
Figure 3
Figure 17

8mm. The head, the upcurved, club-like labial palps and the patagia are an ochreous yellow. The ground colour of the forewings and thorax is a rich chestnut brown. The hindwings are a uniform, medium greyish brown. The forewings are irrorated and marked with pale mauve: a double discal mark; a faint, curved, broken antemedial; a broken postmedial that is sharply angled back to the costa distal to the anterior discal dot, curving to the costa as it approaches it much as in innotabilis; four oblique striae on the costa distal to the postmedial; irregularly sized spots on the margin that are edged with black distad. The medial zone is paler with a slight mauve suffusion, and the marginal zone grades to a darker, richer brown towards the postmedial. The hindwings are slightly paler than the forewings on the underside, both a dull brown, and the former have an irregular, darker postmedial fascia. The male abdomen is similar to that of innotabilis, with modification to segments 5, 6 and 8. However, the processes on the fifth sternite are larger than those on the sixth, rather than vice versa, and the frame of the eighth sternite is distinctly stepped in innotabilis, rendering the sternite much narrower distally than in rentoni, where it is distinctly bilobed at the distal margin. The genitalia are similar to those of innotabilis, but larger, broader, particularly in the area of the saccus, and the valves are straighter and do not become extremely narrow and incurved over the apical part. The aedeagus vesica is more globular, and the scobination is more extensive in rentoni.

Holotype . SABAH: Danum Valley, 27.i.1993. (Chey Vun Khen), BM noctuid slide 19876.

Geographical range. Borneo.

Habitat preference. The only specimen was taken from an area of disturbed lowland dipterocarp forest.

<<Back >>Forward <<Return to Content Page

Copyright © Southdene Sdn. Bhd. All rights reserved.