Paratrikona Spaeth, 1923

Simões, Marianna V. P., 2017, Revision of the Greater Antilles genus Paratrikona Spaeth, 1923 (Coleoptera: Chrysomelidae: Cassidinae: Dorynotini), Zootaxa 4238 (3), pp. 417-425 : 424

Key to Paratrikona Spaeth, 1923

1. Body widest at the anterior half of elytra; prothorax not emarginated anteriorly; head not visible from above; elytral anterior angle rounded; claws not divergent ( Paratrikona Spaeth, 1923 ).................................................2

1'. Body widest at middle of elytra; prothorax emarginated anteriorly, head visible from above; elytra with anterior angle nar- rowed; claws weakly divergent....................................................... Omoteina Chevrolat, 1836

2(1). Body quadrangular; elytra with postscutellar tuberculum well-developed and conical........ P. turrifera ( Boheman, 1854)

2'. Body oval, ellipsoid or triangular; elytra with postscutellar tuberculum absent or poorly developped................... 3

3(2’). Body dorsal ground color yellow.........................................................................4

3'. Body dorsal ground color red........................................................................... 7

4(3). Body opaque yellow...................................................................................5

4'. Body transparent yellow............................................................. P. turritella Blake, 1937

5(4). Body ellipsoid, triangular or elongate-triangular with punctures dark yellow to brown, small, round and organized in regular longitudinal rows......................................................................................6 5'. Body oval; elytra with punctures brown, coarse, irregular shaped and displaced..................... P. ovata Blake, 1938 6' (5). Elytra with anterior angle slightly truncate, exceeding the widest region of the pronotum, lateral margin opaque and in lateral view, hump slightly followed by concave slope..................................... P. blakeae Simões , new species. 6. Elytra with anterior angle rounded, not exceeding the widest region of the pronotum and in lateral view, postscutellar elevation followed by straight slope......................................................... P. lerouxii ( Boheman, 1854) 7 (3’). Elytra with punctuate and conspicuous and poorly developed humeral ridge, postscutellar tubercle in lateral view followed by gradual continuous slope............................................................. P. rubescens Blake, 1939 7'. Elytra with impunctate humeral angle, humeral ridge absent and postscutellar tubercle in lateral view followed by abrupt, sinuous slope........................................................................ P. variegata Blake, 1939