| a new genus and two new species of unarmed hymenolepidid cestodes (cestoda: hymenolepididae) from geomyid rodents in mexico and costa rica. | two new cestodes of the family hymenolepididae are described from two species of rodents of the family geomyidae collected in mexico and costa rica. one new species of hymenolepis is described from cratogeomys planiceps merriam 1895 from near toluca, mexico and another that we allocate to a new genus is described from heterogeomys heterodus (peters, 1865) from near irazú volcano, costa rica. hymenolepis s. str. includes those hymenolepididae with an apical organ, with no hooks on suckers or apic ... | 2020 | 33056600 |