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Risoba
orientalis
Holloway stat. n.
Risoba sticticata
orientalis
Holloway, 1976: 22.
Risoba
viridata
Bethune-Baker sensu Martini & Thöny, 1993: 7.
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Risoba orientalis
(holotype) |
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Diagnosis and taxonomic note. The facies is similar to that of
sticticata
Prout from New Guinea but this typically has asymmetric saccular processes on
the valve more as in the vialis group and a shorter more angled costal
flange. The facies of the green and brown forewings of orientalis is
distinctive, particularly the strongly punctate postmedial, which is reflected
by a similar row of dots at the distal end of the pale zone of the hindwing. The
discal ring of the forewing is prominent. The male genitalia have an elongate,
slightly crimped flange as in calainigrata; the aedeagus has a central
comb of spines but the vesica contains a row of sharp spines with broad bases (sticticata
lacks strong cornuti). Thus, orientalis is unrelated to sticticata
and belongs in the jucunda group.
R. calainodes
Prout (Sumatra) has facies similar to calaina but aedeagus ornamentation
more as in orientalis, though the row of spines on the aedeagus is
longer, broader, slightly spiralled, the spines finer.
R.
diehli
also has an aedeagus of this type.
Geographical range. Borneo.
Habitat preference. The original male was from 1620m on G. Kinabalu; Martini
& Thöny (1993) recorded a further male from 950m on G. Trus Madi, Sabah.
Kinabalu.
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