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Didigua seticornis Walker
Nonagria seticornis Walker, 1862, J. Linn. Soc. (Zool.), 6: 180.
mesocausta Hampson, 1905, Ann. Mag. nat. Hist. (7), 16: 598, syn. n.
Didigua seticornis Walker; Kobes, 1997: 146.
Didigua mesocausta Hampson; Kobes, 1997: 155.


Didigua seticornis

Didigua seticornis
(mesocausta form)

Didigua seticornis
(black mesocausta form)

Diagnosis and taxonomic note.
See the previous species. This is a very variable species and can have the medial zone of the forewing suffused black or brown. The holotype of mesocausta has a brown medial zone but the genitalia are as in typical seticornis. Externally similar material from Sulawesi (slide 17941) has distinct male genitalia (shorter valves, an elongate, bifid, spined juxta, and a shorter, more dorsal spine associated with the ductus ejaculatorius in the aedeagus vesica), and is therefore not considered conspecific. The female genitalia of seticornis have a distinct diverticulum to the bursa that presumably accommodates the spine of the male vesica. Both features are lacking from
purpureoscripta and lilacina Hampson which have both been placed as synonyms of seticornis in the past (e.g. Poole, 1989; Kobes, 1997). The taxon identified as seticornis by Holloway (1976) is described as new below. The genitalia illustrated by Kobes (1997) for seticornis also seem to represent a different species.

Geographical range. Sundaland.

Habitat preference. The species is common in the lowlands, extending with decreasing frequency up to about 1600m.

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