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Polydesma boarmoides Guenée
Polydesma boarmoides Guenée, 1852, Hist. nat. Insectes, Spec. gén. Lépid., 6: 441.
Polydesma mastrucata Felder & Rogenhofer, 1874, Reise öst. Fregatte Novara, Lep. 4.: pl. 111, f. 31.

Polydesma boarmoides

. The name of this species reflects its superficial resemblance to some ennomine Geometridae of the tribe Boarmiini, particularly the genus Racotis Moore, but the fasciation is more clearly defined and differs considerably on the underside where the broadest band is set well in from the margin with a sharp distal boundary and an extensively diffuse basal one, that is very much broader in the male, particularly on the hindwing.

Geographical range. Indo-Australian tropics east to Australia, Fiji, New Caledonia, also recorded from the Marianas, Carolines, Society Is. and Hawaii.

Habitat preference. Chey (1994) recorded a single specimen in a Gmelina plantation at Brumas in the lowlands of Sabah.

Biology. Life history descriptions and host records for P. umbricola within the region (Robinson et al., 2001) are probably all referable to boarmoides (Robinson, 1975; reference to the larval description by Gardner discussed below).

Gardner (1948a) described the larva (as umbricola). The anal prolegs are all well developed as in the Pandesmini, and it also shares with this group an unusual mandibular structure with an internal armature of denticles, though fewer than in Pandesma. The larval description generally is very similar to that of Pandesma, as is the indication of bark-feeding, though records cited by Robinson et al. (2001) also note foliage-feeding. Sevastopulo (1944) described the larva as having a dark brown head with a pale, inverted V-mark. The body is mottled with dark and pale brown: darker streaks and dots on a creamy ground, the mottling coalesced into irregular stripes.

Pupation is in a thick cocoon of papery white silk. The pupa has a thick white bloom (Sevastopulo, 1944).

Host plants recorded (Robinson
et al., 2001) are mostly from mimosoid Leguminosae: Acacia, Albizia, Pithecellobium; records from Salix (Salicaceae) and Litchi (Sapindaceae) need further investigation. P. scriptilis is also recorded as feeding on Albizia (Robinson et al.).

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