The Saroba group of genera
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Sarobaantecedens Walker comb. n.
Thermesia antecedens Walker, 1864, J. Linn. Soc. (Zool.), 7: 184.
Epidromia cinnaberrina Snellen, [1886], Midden-Sumatra, 4 (8): 48, syn. n.


. The species has similar coloration to congeners, but is distinguished by a much stronger angle to the hindwing margin at CuA2. There are straight, dark brown medial fasciae on fore- and hindwings, with reticulated pale orange basal to this and in a subcostal patch distal to it on the former, and in a small central patch distal to it on the latter.

Taxonomic note. The male eighth segment has both sclerites very shallow, the margin of the sternite biarcuate, with a slightly corematous and setose membranous zone posterior to it. The valves are broad, with a prominent spine arising centrally from an irregularly transverse ridge. The apical part of the valve is broad throughout and does not articulate at the junction with the processes. The juxta is broad, scobinate, with a prominent central peak dorsally. The aedeagus vesica is small. Phragma lobes are absent from the anterior of the second abdominal tergite. The species may therefore be misplaced in the Saroba group. S. cinnaberrina Snellen (Sumatra) appears from the illustration in the original description and a colour image of the holotype in RMNH, Leiden, to be antecedens.

Geographical range. Borneo, Sumatra, Thailand (VK), N.E. Himalaya.

Habitat preference. The holotype was taken by A.R. Wallace in Sarawak. Two further specimens have been recorded in recent surveys, one from 60m in lowland forest of the Ulu Belait in Brunei and one from lowland forest in the Barito Ulu of Kalimantan Tengah.

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