Smalleyus
Encyclopedia
Smalleyus is a genus of crab
s in the family Pseudothelphusidae
, containing the single species Smalleyus tricristatus.
Smalleyus tricristatus was described by Fernando Alvarez in 1989, based on specimens collected in the Los Tuxtlas
region of Veracruz
, adjacent to the Gulf of Mexico
.
Smalleyus tricristatus is listed as Data Deficient
on the IUCN Red List
.
Crab
True crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" , or where the reduced abdomen is entirely hidden under the thorax...
s in the family Pseudothelphusidae
Pseudothelphusidae
Pseudothelphusidae is a family of freshwater crabs found chiefly in mountain streams in the Neotropics. They are believed to have originated in the Greater Antilles and then crossed to Central America via a Pliocene land bridge.-Parasitology:...
, containing the single species Smalleyus tricristatus.
Smalleyus tricristatus was described by Fernando Alvarez in 1989, based on specimens collected in the Los Tuxtlas
Los Tuxtlas
The Los Tuxtlas region, very broadly, occupies parts of south central Veracruz, in east central Mexico. The region includes the Sierra de Los Tuxtlas and stretches from Laguna Alvarado, along the Gulf of Mexico, to Laguna del Ostión, then along the westernmost tributaries of Laguna del Ostión, to...
region of Veracruz
Veracruz
Veracruz, formally Veracruz de Ignacio de la Llave officially Estado Libre y Soberano de Veracruz de Ignacio de la Llave , is one of the 31 states that, along with the Federal District, comprise the 32 federative entities of Mexico. It is divided in 212 municipalities and its capital city is...
, adjacent to the Gulf of Mexico
Gulf of Mexico
The Gulf of Mexico is a partially landlocked ocean basin largely surrounded by the North American continent and the island of Cuba. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. In...
.
Smalleyus tricristatus is listed as Data Deficient
Data Deficient
Data Deficient is a category applied by the IUCN, other agencies, and individuals to a species when the available information is not sufficient for a proper assessment of conservation status to be made...
on the IUCN Red List
IUCN Red List
The IUCN Red List of Threatened Species , founded in 1963, is the world's most comprehensive inventory of the global conservation status of biological species. The International Union for Conservation of Nature is the world's main authority on the conservation status of species...
.