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"Euproctis" citrinula van
Eecke
Euproctis
citrinula van Eecke, 1928, Zool. Meded. Leiden, 11: 115.
Diagnosis. Only worn material has been taken in Borneo, resembling Micromorphe
chalcostoma, Artaxa phaula and some Orvasca species in what can be
seen of the facies: grey wings diffusing yellow towards the margins. The male
genitalia are distinctive, particularly the rectangular, cap-like structure to
the uncus and the short, spanner-like aedeagus.
Taxonomic note. The three Bornean specimens are distinctly grey and larger than typical citrinula,
which has uniform yellow forewings and paler yellow hindwings. The original
description included reference to Borneo, so it is possible two species may be
involved. The structure of the genitalia is virtually identical, however. The
male abdomen lacks tymbals. The modification of the uncus and aedeagus is not
unlike that seen in Sundaroa Gen. n., which also lacks
tymbals.
Geographical range. Sumatra, Borneo.
Habitat preference. All four specimens were taken on the limestone G.
Api, three at 250-270m and one at 900m.
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