Acidalia impedita Walker, 1861, List Specimens lepid. Insects
Colln Br. Mus., 23: 766.
Diagnosis. This species may be distinguished from the preceding ones by the more
expanded central part of the forewing margin and the apparently double forewing
postmedial that is briefly fused subdorsally, the two elements appearing to
cross over each other. The hindwing fasciae are also sinuous.
Taxonomic notes. The male genitalia indicate that impedita is distinct from the
Himalayan O. biangulifera Moore, and from other Asian taxa with similar
facies such as O. sinuicosta Prout (Himalaya) and O. japonica Prout
Geographical range. Borneo.
Habitat preference. Only five specimens have been taken in recent
surveys, two from 600m at Poring near G. Kinabalu, one from a similar altitude
in G. Trus Madi, one from 150m in hill dipterocarp forest on G. Mulu and one (in
USNM) from 1500m 25km north of Tambunan, Sabah. There is a further, older
specimen from Bidi in the lowlands of Sarawak.
to Contents page