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Idaea craspedota Prout
Hyria marginata Swinhoe, 1894, Trans. ent. Soc. Lond., 1894: 182, praeocc.
Sterrha craspedota Prout, 1934: 427.

Idaea craspedota
(x 1.16)

See Idaea phaeocrossa Prout and Idaea vacillata Walker. The dark markings are redder. The general colour of the wings is clearer, less blotched.

Taxonomic notes. The male second sternite lacks a pouch, but there are two pairs of coremata in the abdomen opening laterally between segments 4 and 5, and 5 and 6. The valves are narrow, tapering, but the vinculum is broad with a small saccus. The female has a globular, spined bursa and a basal appendix bursae. The ductus is fluted as in the base of the appendix bursa that leads into a long, spiralled ductus seminalis. I. celativestis Warren (known only from the holotype male, Peninsular Malaysia) has very similar facies but there is a fringe of scales in the medial zone of the hindwing underside, and the hind-tibial hair pencil is more purplish. In the male abdomen there is a pair of large coremata in the intersegmental membrane just basal to the genitalia: the aedeagus has many moderate spines in the vesica (single sclerotised patch in craspedota).

Geographical range. N.E. Himalaya, Sundaland.

Habitat preference. The species is infrequent in lowland forest.

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