A new cucullanid species (nematoda) from the freshwater fish Vieja intermedia (Gunther, 1862) (cichlidae) in mexico

A new nematode species, Cucullanus angeli n. sp., is described from specimens recovered from the intestine of Vieja intermedia (Gunther, 1862) from the Lacantun River, State of Chiapas, Mexico. It is characterized largely by having an unusual distinct impaired median papilla present on anterior cloacal lip in the male and the situation of phasmids (close to eighth pair of papillae

Spinitectus mariaisabelae n. sp (Nematoda : Cystidicolidae) from the intestine of the freshwater fish Profundulus punctatus (Cyprinodontiformes) in Mexico

Spinitectus mariaisabelae n. sp. is described from the intestine of Profundulus punctatus (Gunther) (Pisces, Cyprinodontiformes) from the Suchiapa River, State of Chiapas, Mexico. It is characterized largely by the bifurcate distal tip of the larger (left) spicule, spination of the cuticle separated into 4 longitudinal sectors, more or less regularly spaced rings of spines, and by the position of the excretory pore just posterior to the 7th ring of visible spines. By having the rings of spines divided into 4 sectors, the new species resembles 8 of the 15 American specie