Ctenocephalides
Ctenocephalides is a flea genus in the tribe Archaeopsyllini which includes the cat flea , "Ctenocephalides felis" and the dog flea , "C canis" . 
<triplet> cat flea <subj> Ctenocephalides <obj> parent taxon <subj> Ctenocephalides <obj> parent taxon <triplet> dog flea <subj> Ctenocephalides <obj> parent taxon <subj> Ctenocephalides <obj> parent taxon