Cambarellus alvarezi

Alvarez's Dwarf Crayfish
(Cambarellus alvarezi)

syn. -


Mexico: Ejido El Potosí / Galeana / Nuevo León

local name: -

size: (?)

extinction date: 1994

This crayfish species was destricted in its distribution to a single stretch of water, a spring pond (Ejido El Potosí, Galeana in the state of Nuevo León / Mexico) with an surface area of about one hectare (0,01 km²).

Intensive pumping of groundwater for agriculture has led to a dramatic reduction in the size of this pond and the amount of aquatic vegetation (Ceratophyllum sp.) that it supported and since 1994 the pond is now completely dry.

Since then of course the endemic crayfish species is lost too, it is now officially considered extinct since 2010.


- Gabino A. Rodríguez-Almaraz; Ernesto Campos: Distribution and Status of the Crayfishes (Cambaridae) of Nuevo León, México. Journal of Crustacean Biology, 14(4): 729-735, 1994