Pastor de Ward, C. T.; Lo Russo, V. (2007). A review of the genus Richtersia (Nematoda: Selachinematidae): new species from Golfo San José and Golfo San Matías, Chubut (Argentina). J. Mar. Biol. Ass. U.K.87. 1153–1160.
This article is a review of the genus Richtersia (Nematoda: Selachinematidae) with a key to species, genus
diagnosis and lists of valid species. Two new Richtersia species from the Golfo San José and Golfo San Matías,
Chubut province of Argentina are described: Richtersia bicornis sp. nov. is characterized by having two thorn
structures after cuticular collar, and in total 32–40 longitudinal rows of spines arranged in eight groups in
cervical region and precloacal spines similar in shape. Richtersia argentinae sp. nov. is characterized by the number
of longitudinal rows of spines, amphid size and the precloacal spines configuration