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Euconosia
Watson
Type species: aspersa Walker,
Borneo.
Synonym: Conosia Hampson (type species aspersa Walker) praeocc.
This
Sundanian genus has forewing venation with three bifurcate systems arising from
the distal part of the cell as in Eugoa Walker, Cyclosiella Hampson
and Trischalis Hampson, discussed later (see
Eugoa Walker group of genera). R1 anastomoses
with Sc as in Eugoa. However, one vein has been lost, probably M2 as in
other Lithosiini. The forewings are more elongate, apically acute, with the
tornus slightly falcate (Fig 2h).
Fig 2h: Euconosia aspersa Walker
The
male genitalia have the valves simply divided, more as in some of the Lithosiini
genera (the structure of the first tergite is also more as in these genera); the
dorsal part of the valve is at least partially fringed with dense, short hairs.
The saccus is squarish, with an excavate distal margin. The aedeagus vesica is
simple, with a cornutus present in some species on the end of one diverticulum.
The eighth segment is short, modified.
The
female genitalia have a short ductus and a large, pyriform bursa, within which
are two scobinate signa as in other Lithosiini. The bursa in Eugoa and
allies lacks signa but often has more general spining.
All
three known species are treated below.
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