Taxonomic name: Ischnopsyllus Ischnopsyllus simplex simplex (Flea Species)Interaction Type: ectoparasite ofLocation: PembrokeshireReference: Observations on host-finding by bat-fleas, with particular reference to Ischnopsyllus simplex (Siphonaptera: Ischnopsyllidae) in Great Britain. Taxonomic name: Myotis nattereri