TRIBE NYGMIINI n.
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Rhypotoses brooksi Collenette 
   
Rhypotoses brooksi Collenette, 1953, Treubia, 22: 230.
   
Rhypotoses brooksi Collenette; Holloway, 1976: 51.


Rhypotoses brooksi


Rhypotoses brooksi


Diagnosis.
The facies is very similar to that of the next species and to glebula Swinhoe, and confirmation from the male genitalia may be necessary. All are strongly sexually dimorphic, and females have been assigned tentatively. Males of both this and the next species can be distinguished from those of glebula by the slightly more lunulate and irregular fasciation of the forewing: glebula also has a slightly bronzy tone to the forewing, and is smaller. The male genitalia of glebula have valves of the rounded type whereas those of brooksi and the next species are quadilateral. Possible females of brooksi may have a black abdominal tuft whereas possible females of glebula have it brown, but only when reared siblings of both sexes are available can this be confirmed. Those attributed to brooksi have an expanded and sclerotised base to the ductus, which would correlate with the more robust and broader aedeagus of the male.

Geographical range. Sumatra, Borneo.

Habitat preference. This is a common species of lowland forest, including heath forest, and extends at lower frequency up as high as 1930m.

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