Mormidea, Amyot and Serville

KEY TO NEOTROPICAL GENERA RESEMBLING MORMIDEA View in CoL (modified from Rolston 1978)

1 Small flat spine at posterior pronotal angle extending over each corium............................... Moromorpha Rolston

– Posterior pronotal margin unarmed.... 2

2(1) Superior surface of each tibia sulcate, at least distally; if sulcation obscure, then dorsal coloration of pronotum, scutellum, and corium metallic blue-green to black, sharply contrasting with pale yellowish head ( Fig. 2)..... Lattinellica , new genus

– Superior surface of each tibia rounded, not sulcate; usually not colored as above... 3

3(2) Apex of first rostral segment not or scarcely surpassing bucculae... Oebalus Stål

– Apex of first rostral segment clearly surpassing bucculae............... 4

4(3) Rostrum extending onto second visible abdominal sternite; posterior margin of genital cup broadly and deeply emargin-ate in ventral view ( Fig. 5)......................... Lattinidea , new genus

– Rostrum not or barely reaching second visible abdominal sternite; emargination in posterior margin of genital cup, if present, never deep or wide.................. Mormidea Amyot and Serville