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Bosara Walker Gen. rev.
Type species: dilatata Walker.
Synonym: Gullaca Warren (type species modesta Warren, N.E.
Himalaya, Java).
This species brings together small, mostly brown species from the old,
broad concept of Chloroclystis that show moderate sexual dimorphism,
usually a bowing of the costa of the male, more evenly than in Axinoptera Hampson
and sometimes (e.g. typical Bosara) with a crest of scales on the costal
margin or just subcostally. The forewings are rather deep in both sexes and
distinguished by a doubly angled postmedial to both wings, often emphasised by
darker brown just basad within the angles: the postmedials are not a single fine
darker line as in Axinoptera.
In the male abdomen the octavals are strong, fused into a single process
in dilatata but separate though distally convergent in most other
species. The genitalia have the tegumen expanded into an ovate plate that hoods
the smaller, acute uncus. The hood is sometimes bilobed apically. The valves are
usually rather narrow, with the apex of the sacculus produced into a small spur
or triangle. The aedeagus vesica is usually generally scobinate, though rarely
with cornuti.
The female ductus and bursa are diverse in structure as illustrated,
though the bursa is usually partially or wholly lightly spined distally and
sometimes sclerotised basally, occasionally with a subbasal lateral lobe within
the sclerotised portion.
The genus probably embraces the following as well as the type species
above and the Bornean species below though the placement needs confirmation by
dissection. B. catabares Prout comb. n. (Sulawesi); B. phoenicophaes Prout
comb. n. (Sulawesi); B. cuneativenis Prout comb. n. (Sulawesi); B.
atypha Prout comb. n. (Sulawesi); B. pygmaeica Prout comb. n.
(Sulawesi); B. epilopha Turner comb. n. (Queensland); B. linda Robinson
comb. n. (Fiji); B. callinda Holloway comb. n. (New Caledonia).
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