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Orothalassodes retaka sp. n.  

Orothalassodes retaka (holotype)

21mm. In facies this species resembles hypocrites but is a slightly paler green with a larger dorsal white spot and less intensely reddened wing margins. It differs in the male abdomen. The eighth tergite has the arms of the terminal Y semicircular, slightly outcurved rather than digitate. The centre of the sternal margin is cleft rather than with a sclerotised protrusion. In the genitalia the pair of spinous zones near the juxta are broader, more robustly scobinate.

Holotype . BRUNEI: 1618m, Bukit Retak, montane forest, 18.5.1970 (Lt. Col. M.G. Allen) BM geometrid slide 16738.

Geographical range. Borneo.

Habitat preference. The species is montane.

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