Hystrignathus Leidy, 1850

Rodríguez, Jans & Rodríguez, Nayla, 2010, Two new species of nematode (Oxyurida, Hystrignathidae) parasites of Passalus interstitialis Escholtz, 1829 (Coleoptera, Passalidae) from Cuba and a new locality for Longior similis Morffe, Garcia & Ventosa, 2009, ZooKeys 49 (49), pp. 1-11 : 3

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