Baroa siamica Hampson, 1911, Ann. Mag. nat. Hist. (8),
Baroa soricina javanica Kalis,
1934, Ent. Rundsch. 51: 209.
Baroa javanica Rothschild, 1935, Novit. Zool., 39: 250
(junior primary homonym).
Baroa siamica Hampson; Holloway, 1976: 4.
Diagnosis. The dark brownish grey, narrow forewings, blackish hindwings and
speckled, bright yellow thorax distinguish this species. The male has the hind-wing dorsum much expanded, folded, paler, inverted with scent scales.
Taxonomic notes. B. soricina Snellen (Sulawesi) is sister-species to siamica. It
is likely that the Kalis and Rothschild taxa are the same as the latter based
his description on material collected in Java by the former. There are minor
genitalic differences in material from Thailand, Borneo and Java, though
externally the moths are indistinguishable. Typical siamica has much
broader signa bands in the bursa copulatrix than do the females from the other
three localities. Javan males have the uncus processes slightly out curved and
bearing a few stout, spinelike setae apically that are not seen in Bornean
Geographical range. Thailand, Sundaland, Philippines.
Habitat preference. On G. Kinabalu records were made from 1200m to 1930m.
Most records on G. Mulu were from lower montane forest at 1000m where the
species was common, though it was also recorded in lowland dipterocarp forest on
both G. Mulu and G. Api. Records from Brunei have been from lowland forest, and
also upper montane forest at about 1700m (Bukit Retak, Bukit Pagon).
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