astriata Holloway comb. & stat. n.
Nigramma purpurascens astriata Holloway,
Diagnosis. The forewings are somewhat deeper than in the previous species. The
facies is similar except it lacks the darker brown streak posteriorly within the
apical pale brown zone and possesses an apical purplish patch on the costa and a
submarginal white transverse dash one third from the tornus; the distal margin
of the basal purplish grey zone is set more obliquely to the costa. In the
female genitalia the ostial area is less complex (Fig. 274) and consists of a
sclerotised tube, somewhat cleft both dorsally and ventrally, the dorsal cleft
possibly homologous with the post-ostial invagination of other Lophoptera.
Taxonomic note. The discovery of a taxon in Borneo much closer to purpurascens, described
above, indicated that astriata should be raised to specific rank.
Geographical range. Borneo.
Habitat preference. The only specimen was taken at 1760m on G. Kinabalu
in an area of tall, well developed upper montane forest.
to Contents page