Key to the species of Hystrignathus Leidy, 1850 from Cuba

Note: in the key we omit two species of Cuban hystrignathids formerly placed in Hystrignathus, which will be published in the future as new combinations.

1. First cephalic annule markedly inflated; spines ending at level of procorpus... .......................................................... H. splendidus Morffe & García, sp. n.

– First cephalic annule not markedly inflated; spines surpassing the end of pro- corpus..................................... H. rosario García, Ventosa & Morffe, 2009