Key to genera:

1	Antennae of five articles	2
	Antennae of four articles	3
2	Second antennomere less than half as long as the first, African genus	Encosternum Spinola
	Second antennomere longer than the first, Indian genus	Empysarus Martin
3	Second antennomere about half as long as third	Kojderus Magnien & Gierlasiński
	Second antennomere about as long as or longer than third	4
4	Second and third antennomere subequal in length, abdomen ovoid	6
	Second antennomere about 1.5 times longer than third, abdomen broadly rounded	5
5	Antennae slender, long, ocellae close to each other (interocellar distance about 1/4 of diatone), anterior margins of pronotum slightly concave, not produced.	Cyclogastridea Reuter
	Antennae stouter, shorter, ocellae distant, closer to the eyes (interocellar distance about 1/3 of diatone), anterior margins of pronotum broadly concave, produced.	Natalicola Spinola
6	Coria dotted with small white callous tubercles	Elisabetha Schoudeten
	Not as above	7
7	Metasternal carina broad, extending laterally between between meso- and metacoxae	Haplosterna Westwood
	Metasternal carina thin, elevated, not extending between meso- and metacoxae	8
8	Mesosternal carina broader posteriorely	Selenymenum Montandon
	Mesosternal carina narrow and tapering posteriorely	Stevesonius Rider,

comment: This key is diverging from the one given by Kumar (1974), which would give an opposite result concerning Selenymenum and Stevesonius. But examination of Jeannel type of Stevesonius acutus and of his descriptive drawings clearly agrees with a narrow mesosternal carina. It is not so clear relatively to Selenymenum, and in fact, one could ask if the distinction between those two genera is justified or not.