Type species: zalska Swinhoe, N.E. India.
This genus belongs to a major Oriental complex that also includes Carige
Walker, Cryptoloba Warren, Lobogonia Warren and probably a
number of others.
The forewings are usually bifalcate, much as in the desmobathrine genus Ozola
Walker, and fasciated more darkly, often with a reticulate series of patches
associated with the fasciae. The typical multiple nature of larentiine
fasciation is usually not evident. The male antennae are strongly but untidily
bipectinate, those of the female less so.
The hindwing shape is variable, with a single angle at vein M3 in Goniopteroloba
and Lobogonia, an additional one at M1 in Carige, and rounded
in Cryptoloba. In the male, the anal area (and vein) is reduced to a
small basal lobe that has a longitudinal band of carinae, suggesting a
sound-producing function (venation diagrams for other genera may be found in Xue
(1992)); the female has a normal anal vein. The base of the male abdomen has the
sac-like process that characterises the Trichopterygini, though relatively short
and broad. These two features suggest the complex should be placed in that tribe
despite the differences in wing shape, facies and the strongly bipectinate
In the male genitalia the uncus is broad, usually apically bifid,
sometimes completely divided. The gnathus is divided into lateral arms, slender,
tapering, often curved or angled. The valve is sometimes divided. The female
genitalia (biconcava examined) have a pyriform bursa ringed centrally by
a series of about ten longitudinal, sclerotised ridges.
The genus is Oriental, with the strongest representation in Sundaland of
the complex (Carige extends to Sumatra and Flores), and a few species in
the Philippines and Sulawesi.
to Contents page