Taxonomy: f. Hymenolepididae
Animal: Hymenolepsis nana 12 04.jpg
Hymenolepis nana fully developed metacestode from the haemocoele of a cat flea (Ctenocephalides felis felis) pupa reared at 32C/3mmHg, 6 days after ingestion of eggs by the larval stage of the flea (Alcian Blue pH 2.5). The development of the parasite was not linked to the development of the flea host; stronger host reaction at lower temperatures. H. nana adult is seen in the intestine of humans but more usually the normal host the rat (no intermediate host is required, but the cat flea can act as the intermediate host). ( 200 x 100 microns, cercomer and rostellar hooks evident) (Pugh 1985 PhD thesis - see bibliography).

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