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Thalassodes dissitoides sp. n.  

Thalassodes dissitoides

17-18mm. This and the next species have similar genitalia. The fasciae are rather faint in this species, and examination of genitalia features is necessary to distinguish it from the previous three. They are related to T. dissita Walker (S. India) of which the holotype is female, with a male from the same locality (slide 8688) taken to be representative. Features of the dissita group are presence of a setose process at the centre of the valve sacculus, with a scobinate spine or flap arising from the interior margin of the valve. In dissita this is directed towards the apex of the valve and is slender. In dissitoides it is directed more dorsally over the transtilla and is broader. The saccular setose process is larger, constricted at its base.

Holotype  SARAWAK: Gunung Mulu Nat. Park, R.G.S Exped. 1977-8 (J.D. Holloway et al.) Site 15, February, Camp 2.5, Mulu, 1000m. 413461, lower montane forest, BM geometrid slide 10714.

Paratypes: 4 (slide 10723) general data as holotype but sites 8, 23, 25, 28; 1 BRUNEI: 3m. Seria, secondary and coastal veg. 3.6.1979 (Lt. Col. M.G. Allen) slide 8455; 1 SABAH; Malaysia, Tuaran, Agric. Res. Stn. (S.C.F. Chung) slide 7476.

Geographical range. Borneo, Andaman Is. (slide 16837), Peninsular Malaysia (FRIM colln); Philippines (slide 4183), Sulawesi (slide 4136).

Habitat preference. Most specimens are from different types of lowland forest but a few were taken in lower montane forest.

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