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Acta Parasitologica, Vol.47, No. 3, 2002, 224-227
Moravec Frantisek (1) *, Garcia-Magana Leticia (2), Salgado-Maldonado Guillermo (3) - Spinitectus tabascoensis sp. nov. (Nematoda, Cystidicolidae) from Ictalurus furcatus (Pisces) in southeastern Mexico.

(1) Institute of Parasitology, Academy of Sciences of the Czech Republic, Branisovska 31, 370 05 Ceske Budejovice, Czech Republic; (2) Universidad Juarez Autonoma de Tabasco, Villahelmosa, Tabasco, Mexico; (3) Institute of Biology, National Autonomous University of Mexico, A.P. 70-153, 04510 Mexico, D.F., Mexico
* Corresponding author:

A new species of parasitic nematode, Spinitectus tabascoensis sp. nov., is described based on museum specimens recovered from the intestine of the blue catfish Ictalurus furcatus (Valenciennes) from the upper reaches of the Usumacinta River near Tenosique, Tabasco, southeastern Mexico. The new species is characterized mainly by markedly long cuticular spines and their arrangement, the situation of the excretory pore between the 6th and 7th rings of spines, the length of the left spicule (213 mm), and the number and arrangement of caudal papillae in the male. This is the fifth species of Spinitectus reported from freshwater and migratory fishes in Mexico.

KEY WORDS: Parasitic nematode, Spinitectus, fish, Ictalurus, Tabasco, Mexico
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