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Nygmia castor Collenette
comb. n.
Euproctis
castor Collenette,
1949, Ann. Mag. nat. Hist. (12), 1: 701.
Diagnosis and taxonomic note. The yellow wings with extensive basal suffusion of
grey could lead to confusion with some species of Micromorphe or Artaxa, but
the marginal black spots of the forewing are on either side of vein M1 rather
than associated with the radial system. The male genitalia are similar to those
of postgrisea in the division of the valves and in aedeagus structure
(the spur is much larger), but the uncus is entire, long, and more consistent
with placement in Nygmia.
Geographical range. Java, Borneo.
Habitat preference. The three Bornean specimens are all from lowland
forest on acid soils: swamp forest at Badas and dry forest at Telisai in Brunei;
wet heath forest (kerangas) west of the Melinau Gorge in Sarawak.
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