View Image Gallery of Tribe Nygmiini n.

Nygmia castor Collenette comb. n.  
Euproctis castor Collenette, 1949, Ann. Mag. nat. Hist. (12), 1: 701.

Nygmia castor

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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