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Thumatha orientalis sp. n.

Thumatha orientalis
(x 1.67)

5-6mm. The facies is typical of the genus and in particular of the Australian species fuscescens. The general coloration is dark reddish brown. The genitalia have a less strongly curved margin to the sacculus than fuscescens, the process of which is shorter and more basal in position. The saccus tapers more. In the aedeagus vesica there is a mass of small spines rather than the groupings of three to four and two large ones in fuscescens. A species from Java (slide 5125) has similar cornuti to fuscescens, whereas a specimen from Madagascar (slide 5122) has just two separate, large cornuti. All these specimens were in the BMNH series of fuscescens, which thus appears to be a species complex.

Holotype  S.E. BORNEO, (Doherty), May [18]91, BM arctiid slide 5121.

Paratypes:2 as holotype, abdomens missing.

Geographical range. Borneo, Sri Lanka (slide 5126).

Habitat preference. The three Bornean specimens were probably from the lowlands.

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