Porthesia fumosa Snellen, 1877, Tijdschr. Ent., 20: 69.
Euproctis sabulosa Heylaerts,
1892, Annls Soc. ent. Belg., 36: 8.
Euproctis ridleyi Swinhoe, 1906, Ann. Mag. nat. Hist. (7), 17:
Diagnosis. The male forewings have a pale yellow ground with two distinct overlays:
a grey shading that is broadly basal to the discal spot and in an oblique
postmedial band; a more sparse but uniform speckling of black scales (See
Nygmia dirtea Swinhoe comb.n). In some specimens the grey extends over the whole wing. The
female forewings are a deep rusty brown, uniformly and extensively irrorated
Taxonomic note. The male genitalia of this and the next species are similar, and have
uncus, valve and aedeagus vesica structure consistent with placement in Nygmia.
Geographical range. Sundaland.
Habitat preference. This species is of similar ecological range and
abundance to moalata (See Nygmia
dirtea Swinhoe comb.n).
Biology. Yunus & Ho (1980) recorded the species (as ridleyi) as
feeding on Eugenia (Myrtaceae) and Mallotus (Euphorbiaceae). There
is an unpublished record of Shorea (Dipterocarpaceae) at FRIM.
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