Fig. 2.

Morphological characteristics of Hymenolepis nana adult worms. The adult worm was approximately 2 cm long and was comprised of up to 200 proglottids (A, C). The scolex was equipped with 4 suckers and a hooked rostellum (B). The mature proglottids showed testes, while the terminal gravid proglottid was round and filled with eggs (D, E). The eggs were round, with oncospheres that contained hooks (F). h, hooks; s, sucker; t, testis; e, eggs.