Zoological Studies

Vol. 59, 2020

(update: 2020.07.09; 08.03)

A New Species of Burrowing Crayfish in Genus Parastacus Huxley, 1879 (Decapoda,
Parastacidae) from the Sinos River Basin, Southern Brazil

Augusto F. Huber1, Emily R. Rockhill1, Paula B. Araujo1, and Felipe B. Ribeiro1,*


1Programa de Pós-Graduação em Biologia Animal (PPGBAN), Departamento de Zoologia (Laboratório de Carcinologia), Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, State of Rio Grande do Sul, Brazil. *Correspondence: E-mail: fbribeiro.bio@gmail.com (Ribeiro)
E-mail: augusto.huber@ufrgs.br (Huber), rockhill24@gmail.com (Rockhill), pabearaujo@gmail.com (Araujo)

(Received 3 June 2020 / Accepted 4 July 2020)
Communicated by Benny K.K. Chan

In this contribution, we describe a new species of burrowing crayfish of the genus Parastacus from a swamp forest in the state of Rio Grande do Sul, southern Brazil, and evaluate its conservation status according to the IUCN Red List Criteria (sub-criterion B1). Parastacus macanudo sp. nov. differs from all other congeneric species in that it has a single row of verrucous tubercles irregularly distributed in the dorsal surface of the palm of chelipeds and epistome median section with a longitudinal groove. The extent of occurrence (EOO) was estimated to be ~1,312 km2 and the species was recorded in only one location in the Sinos River basin. The main threat identified was a continued decline in habitat quality, resulting from pollution in the river and deforestation. We know only one point of occurrence of Parastacus macanudo sp. nov., and suggest that it be categorized as Data Deficient.

Key words: Conservation, Freshwater crayfish, Neotropical region, Taxonomy, Parastacoidea.

Citation: Huber AF, Rockhill ER, Araujo PB, Ribeiro FB. 2020. A new species of the burrowing crayfish genus Parastacus Huxley, 1879 (Decapoda, Parastacidae) from the Sinos River Basin, southern Brazil. Zool Stud 59:47. doi:10.6620/ZS.2020.59-47.