xanthina Holloway & Zilli sp. n.
17-18mm. This species is a similar size to fuscifrons,
but has a much stronger, brighter ground colour. Some females of fuscifrons
also be a stronger yellow, but those of the new species tend to have the pale
lunules at the hindwing tornus more conspicuous, and the orbicular is more
distant from the more distinctly rufous foreiwng antemedial. The stronger yellow
colour is seen also in species such as aurantiaca Hampson from the New Guinea area and
undescribed relatives from the Philippines and Sulawesi. These tend to be much
larger than the Sundanian species. In the male genitalia the valves are shorter
than in fuscifrons
later the exteriorly directed apical projection. There is an acute process just
interior to the central convexity of the ventral margin (not present in fuscifrons
the ventral margin in the latter is straight rather than sinuous) and a setose
process dorsal and basal to that that is broader and more outwardly directed
than its homologue in fuscifrons. The aedeagus has a lateral spine subapically as in
other members of the aurantiaca group but more basal and not slightly serrated. In
the female genitalia, the eighth segment has more numerous setae and the ostium
and basal part of the ductus are very much broader than in fuscifrons
. Sandakan, N.E. BORNEO, (Pryer), BM noctuid slide 19216.
SARAWAK, 1907-1908 (C.J.
BM noctuid slide 19258; 3 Samarinda, S.E. BORNEO, x, xii 1938 (M.E.
range. Borneo, Peninsular Malaysia, Java (slide 19217), Thailand (VK).
preference. The specimens listed above are all from lowland towns. There is
a further female, lacking an abdomen, from Balikpapars (probably Balikpapan in
the lowlands of S.E. Kalimantan).
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