1. Scutellar foveae confluent (a). Small,
rather slender species (b) ...Lonchidia
Scutellar foveae distinctly separated by a
median carina (A, B). Larger, strongly built species ...2
2. No distinct scutellar spine (a), outline
of scutellum in dorsal view rounded (however there is often a more or less
pronounced tooth at the posteriormost point of the circumscutellar carina, which
may look like a small spine in lateral view) (b) ...Figites
Distinct scutellar spine present, obviously
protruding from scutellar outline in dorsal view (A, B) ...3
3. Notauli sculptured with small transverse
ridges (a). Interfoveal carina depressed, much
lower than the level of the foveal edge (b)
...Xyalophora
Notauli smooth (A).
Interfoveal carina as high as the foveal edge (B)
...Neralsia
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