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Amata decorata Walker comb. n.
Syntomis decorata Walker, 1862, J. Linn. Soc. Lond. (Zool.) 6: 89.
Syntomis florina Butler, 1876, J. Linn. Soc. Lond. (Zool.) 12: 350.
Syntomis fata Swinhoe, 1892, Cat. Lep. Heterocera Oxf. Univ. Mus., 1: 48, syn. n.
Ceryx decorata Walker and Ceryx fata Swinhoe; Seitz, 1912-1913: 65.

Amata decorata

This species resembles expandens Walker but has narrower borders to the forewings and a variable degree of yellowish suffusion ot the subapical patches of the forewing and the basal zone of both wings. Each abdominal segment is ringed finely with yellow. See also Eressa vespina Rothschild. The uncus and basal costal processes of the valve are diagnostically darkly sclerotised.

Taxonomic notes. A Sumatran species is externally similar and has darkly sclerotised uncus and basal valve processes, but these are relatively more massive, and the more distal costal processes on the valve are longer (slide 4206). Another Sumatran specimen (slide 4207) has valves that lack this distal process and are apically narrower, more angular. The names hageni Snellen and flavibasis Hampson may be applicable to one or other of these. In all three taxa the male eighth sternite is modified with strong apodemes. Such apodemes are not seen in expandens or the next species.

Geographical range. Borneo.

Habitat preference. The species is rare, possibly restricted to the lowlands and day-flying.

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