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
& Luttgen, in press).
The genus contains six species, three occurring in Borneo (D'Abrera, 1986:
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