Phalaecus Stål, 1862

The genus can be recognized by having the first labial segment is between the bucculae; the pro-, meso- and metasternum are elevated; the mesosternal carina is anteriorly narrow and reaching the procoxae; the metasternum is hexagonal, its anterolateral margins are straight, and its posterior margin is conspicuously concave; the medial abdominal tubercle is insert in the posterior margin of the metasternum; the apex of the metafemur without spine; the tarsi are bi-segmented; and the body has a colorful coloration pattern (Grazia 1983)