Taxonomic name: Ctenophthalmus Ctenophthalmus nobilis nobilis (Flea Species)Interaction Type: ectoparasite ofLocation: HertfordshireReference: An illustrated catalogue of the Rothschild collection of fleas (Siphonaptera) in the British Museum (Natural History). Vol.IV: Hystrichopsyllidae (Ctenophthalminae, Dinopsyllinae, Doratopsyllinae and Listropsyllinae). Taxonomic name: Microtus agrestis