Phalera banksi sp. n.
29-30 m. This species is larger than styx, the ground colour of
the forewings a paler grey so that the markings are more evident. The main
diagnostic features are in the male genitalia. The species is externally similar
to P. mangholda Schaus comb. n. from the Philippines and has been
recorded as such from Sumatra (Bender & Dierl 1977). However, the uncus of
the male genitalia is much shallower, with a distinctive declivity in the centre
of the dorsal surface, and with the lateral margin rounded rather than with a
ventrally directed angle; the gnathal processes are set further apart and are
less robust. The valves are somewhat longer, with the various processes
relatively larger. The eighth sternite of the male abdomen lacks the two central
pockets seen in mangholda and, reduced, in melantata and erconvalda;
in styx there is a deep distal cleft, the end of which is flanked by
acute, anteriorly directed processes.
Peninsular Malaysia (S/Lr.
J.L.C. Banks) Maxwell's Hill, BM notodontid slide 973.
Geographical range. Peninsular Malaysia, Sumatra, ?Borneo.
Habitat preference. The single Bornean female (illustrated) tentatively
attributed to this species was taken at Mesilau (1500 m), G. Kinabalu,
in majestic montane forest by Dr J. Smart.
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