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

Augusto F. Huber ； Emily R. Rockhill ； Paula B. Araujo ； Felipe B. Ribeiro

《Zoological Studies》 59卷 (2020/12) Pp. 1-13

https://doi.org/10.6620/ZS.2020.59-47

摘要

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 km^2 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.

關鍵字

Conservation ； Freshwater crayfish ； Neotropical region ； Taxonomy ； Parastacoidea