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Prometopus
Guenee
Type species: inassueta
Guenee, Australia.
Members of this
genus have a rather striate forewing facies traversed only weakly by antemedial
and postmedial fasciae, but with a strong, white or paler reniform stigma (this
is set obliquely in both Sundanian taxa). In Oriental taxa the anterior half of
the forewing is greenish, the posterior half brown or grey.
These Oriental taxa
are undoubtedly congeneric with the Australian type species as they share
distinctive features of the male genitalia: absence of all processes from the
valve except for a groove that runs about three quarters of its length from the
base, curved roughly parallel to the ventral margin; the zone distal to this
groove is invested with numerous fine, hairlike setae. The trifine basal hair
pencils are present though somewhat small. The aedeagus vesica is short with
three widely separated, large cornuti (inassueta) or more elongate with
clusters or rows of needle-like cornuti (Sundanian taxa). The male basal
sternite is relatively deeply cleft between the apodemes.
Sugi (1987)
illustrated the larva of the Japanese P. flavicollis Leech. It is green
with dorsal and dorsolateral thin longitudinal white stripes and a darker
spiracular stripe. There is a pair of dark protuberances on A8. The larva is a
conifer feeder.
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