From The Collaborative International Dictionary of English v.0.48 :
Desmodus \Desmodus\ n.
the type genus of the Desmodontidae, consisting of vampire
bats.
Syn: genus Desmodus.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) :
Desmodus
n 1: type genus of the Desmodontidae: vampire bats [syn:
Desmodus, genus Desmodus]