Hymenolepis nana (Cont'd)
ADULT
SIZE: 7 to 40 mm, inversely proportional to the number of parasites.
COLOR: Cream.
SCOLEX
SIZE: 0.3 mm in diameter (small).
SHAPE: Round.
ROSTELLUM: Retractile, armed with a row of large hooklets.
PROGLOTTID
SIZE: Less than 1.0 mm wide.
SHAPE: Trapezoidal, four times wider than long.
GENITAL PORE: Single, lateral
UTERUS: Tubular.
OVARIES: Bilobed.
TESTES: Three, round, and large.
Figure 3-47. Stages of Hymenolepis nana.
MD0842
3-55