Callyna Guenée

Type species siderea Guenée, Indian Subregion.

Three species of Callyna Guenée (type species siderea Guenée, Indian Subregion) have been recorded since publication of Part 12. The genus Callyna consists of moderately sized, robust moths with relatively narrow forewings that have facies that varies on the theme of the species illustrated for Borneo. Some species are greyer and may have blocks of black on the costa either side of the medial zone.

The male abdomen has typical noctuid basal hair pencils. The eighth segment is of the framed corematous type, the sternite with long lateral rods. The genitalia have a large paratergal sclerite. The valves are simple, with a marginal corona (reduced or absent in some species, e.g. monoleuca Walker) but no cucullus. There is a harpe of the typical trifine type, sometimes very long as in the type species. The aedeagus vesica is moderately elongate and bears two or more rows or groups of long, slender spines.

The female genitalia have rather delicate, elongate ovipositor lobes, and a short eighth segment that is very much narrower than the seventh; both parts have long, slender apodemes. The ductus bursae has a lightly sclerotised, funnel‐like antrum that is as wide as the eighth segment. There is a short narrow section of the ductus distal to this leading to a variably shaped corpus bursae that may be unornamented (contracta Warren), but is more often strongly corrugated and sclerotised over the basal half to two‐thirds and more scobinate in the distal part (siderea, monoleuca). There is no definite signum.

The genus is moderately diverse throughout the Old World tropics. It is likely that other species will be recorded in Borneo, such as C. jugaria Walker which extends from India to Peninsular Malaysia and recurs in Sulawesi.

All records of larval feeding are from Boraginaceae, mostly from Cordia, but also from Ehretia for one of the Bornean species (Robinson et al. 2001).