Latreille, 1802
All pereonites free (Phronima atlantica 1). P V robust, ending in subchelate claw, ART 5 markedly widened distally, distal (palmar) margin with medial hump-like projection (carpal tubercle) which possesses several tooth-like projections; anterodistal angle with strong, pointed protrusion (carpal process); anterior margin smooth (Phronima atlantica 3). Carpal tubercle may have separate anterior tooth; termed "bifid" with tooth, "single" without tooth. Anterior ("inner") margin of ART 6 may bear projection (metacarpal tubercle). Subchela of P V shorter and broader in males than in females. UR II present in both sexes.
From 8 to 11 species, 7 in the South Atlantic:
Phronima atlantica Guérin-Méneville, 1836
Phronima colletti Bovallius, 1887
Phronima curvipes Vosseler, 1901
Phronima pacifica Streets, 1877
Phronima sedentaria (Forskål, 1775)
Phronima solitaria Guérin-Méneville, 1836
Phronima stebbingi Vosseler, 1901
Diagnoses of the species modified from Shih (1969).