Hymenolepiasis is the most common intestinal tapeworm infection of humans caused by worm of family cestoda, genus hymenolepis and species nana.This infection does not require an intermediate host and infection can occur directly from one infected person to another by fecal-oral transmission.ife cycle of Hymenolepis dimunita. Courtesy of the Centers for Disease Control and Prevention (CDC at http://www.cdc.gov/dpdx/hymenolepiasis/index.html). H nana egg in an unstained wet mount. Courtesy of the Centers for Disease Control and Prevention (CDC at http://www.cdc.gov/dpdx/hymenolepiasis/index.html).