Family Hymenolepididae Ariola

The life-cycle of hymenolepidids is similar to that of anoplocephalds, with transmission occurring via the ingestion of cysticercoid larvae in fleas and other insects.

1. Rostellum unarmed; testes separated into two groups by ovary................................ Hymenolepis Weinland Species: H. dasypteri Vaucher, 1985; Hymenolepis sp.

- Rostellum armed; testes not separated into two groups by ovary................................ Vampirolepis Spasskii Species: V. artibei Zdzitowiecki & Rutkowska, 1980; V. bihamata Sawada & Harada, 1986; V. c r a s s ih a m a t a Sawada & Harada, 1986; V. christensoni (Macy, 1931(a)); V. d e c ip i e n s (Diesing, 1850); V. elongata Rêgo, 1962; V. guarany Rêgo, 1962; V. longisaccata Sawada & Harada, 1986; V. mazanensis (Vaucher, 1986(b)); V. pandonensis Sawada & Harada, 1986; V. phyllostomi Vaucher, 1982 (b); V. promopsis (Vaucher, 1986(a)); V. santacruzensis Sawada & Harada, 1986; V. temmincki (Vaucher, 1986(a)); Vampirolepis sp.