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The
Gelastocera Group of Genera
The four
genera included here all have the male antennae bipectinate, a feature only seen
otherwise in the Nolinae. The valves of the male genitalia bear large coremata
basally; these may also be associated with the vinculum. The apodemes of the
basal sternite are usually rather bulbous in both sexes, but there are no
obvious tymbal structures in the male.
The wing venation is not strongly modified from the groundplan. An areole is
present in all except
Erizada
Walker, where the radial sector branching is (R2 (R3, R4)). The areole is small
in Beara
Walker, with R5 connate with the above branching system at its apex; it arises
independently from the larger areole in
Gelastocera
Butler and Ptyonota
Hampson. The hindwing venation is quadrifine, with M3 and CuA1 stalked in all
except Erizada.
The forewing pattern is unusual for the Nolidae in having both reniform and
orbicular stigmata, though these may be obscure.
The male genitalia are relatively simple, the uncus slender, rather sinuous,
apically acute. There is usually a well developed saccus. The valves are
generally simple, but with basally directed setae in their distal zone similar
to those of the Careini, and the apodemes of the eighth tergite are also rather
broad with a round excavation between them as in some careine genera. The
tegumen is sometimes laterally expanded but does not overlap the vinculum to any
significant extent.
The female has the ovipositor lobes ring-like, setose, forming a pad. The bursa
lacks a signum but may be generally scobinate.
The life history of three of the genera is known (see below); the pupal abdomen
lacks beading or carinae.
All four genera are Oriental, only Beara extending east of Sulawesi.
Gelastocera extends north into temperate latitudes.
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