Litomosoides chagasfilhoi sp. nov. (Nematoda:Filarioidea) parasitizing the abdominal cavity of Akodon cursor (Winge, 1887) (Rodentia:Muridae) from Brazil.

Litomosoides chagasfilhoi sp. nov., a parasite of the abdominal cavity of the wild rodent Akodon cursor (Winge. 1887), is described herein according to investigations conducted by light and scanning electron microscopy. The leading morphological characteristics of the new species are as follows: the buccal capsule is higher than it is wide and has walls thinner than the lumen, and the left spicule presents a handle longer than the blade, whose edges from large membranous wings folded longitudinally. This new species is different from L. silvai Padilha and Faria, 1977, living in the thoracic cavity of the same host.