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Meganoton
Boisduval
Type species: nyctiphanes Walker.
The antennae are relatively long and slender. The forewing has a pale
discal spot and fasciae somewhat as in Acherontia, but there is also a
variably developed dark band from the costa directed towards the centre of
the margin as in Megacorma. The abdomen is marked with a dorsal dark band
and a lateral band or row of maculation. In the male genitalia the apex of
the aedeagus has one or two recurved thorn-like or tapering processes. The
uncus is bifid.
The larva of the type species has a conical tubercle dorsally on T3; the
caudal horn bears tubercles. The pupal tongue-case is free but not
recurved. There are few host records and no indication of strong
specificity amongst these.
Genital stridulation (see also Psilogramma) has been noted in M. analis
(Nassig
& Luttgen, in press).
The genus contains six species, three occurring in Borneo (D'Abrera, 1986:
14).
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