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Dictyestra
Sugi
Type
species: dissectus Walker.
This genus was erected
by Sugi in Inoue et al. (1982) in recognition that the type species, though
similar in fades to species of the Palaearctic genus Heliophobus
Boisduval,
differed markedly in characters of the male genitalia.
Heliophobus
species have the neck of the cucullus angled strongly ventrally but it is very
much shorter and with a small spur in the angle. The corona is typical, not
modified as it is in dissectus. There is a triangular extension from the
sacculus rather than the definite harpe seen in dissectus; the latter has a
small process from the costa on the right hand side only that underlies with the
harpe. The uncus is unmodified in Heliophobus. The aedeagus vesica is an
elongate tube in Heliophobus with a distal band of spines and a longitudinal
scobinate, then just sclerotised extension from the apex of the aedeagus. The
trifine scent pencils are present in Heliophobus, absent in Dictyestra.
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