species: excisa Hampson, Burma.
Mellona van Eecke (type species blanda
van Eecke), syn. n.
relationship of this genus to the previous two is discussed above under Macaduma.
species have a distinct angle on the forewing costa at about three-quarters,
and the apex is slightly falcate (Fig 4h). The forewing facies is more finely
streaked and mottled than in Oxacme.
Fig 4h: Tortricosia
the male abdomen the structures are much simpler than in the other two genera,
with pairs of coremata on the sixth and seventh segments (Fig 150) with no
obvious supporting structures as seen in Oxacme.
The genitalia are similar to those of Oxacme,
but the uncus is usually longer and the aedeagus vesica has general
scobination in clusters of spines rather than a single large cornutus.
female genitalia (excisa) have rather
elongate ovipositor lobes, a pair of strange thumb-like structures that flank
the ostium, and a spiny bursa that tapers away distally.
genus is virtually restricted to Sundaland, with all included species occurring
in Borneo. The genus Mellona shares
definitive features with Tortricosia and
is therefore brought into synonymy.
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