Common names: Omilteman small-headed rattlesnake.

Crotalus intermedius omiltemanus is a venomous

Venomous snake

"Poisonous snake" redirects here. For true poisonous snakes, see Rhabdophis.Venomous snakes are snakes which have venom glands and specialized teeth for the injection of venom...

 pitviper

Crotalinae

The Crotalinae, commonly known as "pit vipers" or crotaline snakes, are a subfamily of venomous vipers found in Asia and the Americas. They are distinguished by the presence of a heat-sensing pit organ located between the eye and the nostril on either side of the head...

 subspecies

Subspecies

Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

 found in Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 in the state of Guerrero

Guerrero

Guerrero officially Estado Libre y Soberano de Guerrero is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 81 municipalities and its capital city is Chilpancingo....

.

Description

This subspecies can be distinguished from the typical form (C. i. intermedius

Crotalus intermedius

Crotalus intermedius is a venomous pitviper species found in central and southern Mexico. Three subspecies are currently recognized, including the nominate subspecies described here.-Description:...

) by its ventral scale count: 164 or more in males, and 170 or more in females.

Geographic range

Found in Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

, in Guerrero

Guerrero

Guerrero officially Estado Libre y Soberano de Guerrero is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 81 municipalities and its capital city is Chilpancingo....

, in several places west of Chilpancingo

Chilpancingo

Chilpancingo de los Bravo is the capital and second-largest city of the state of Guerrero, Mexico. It is located at . In the 2005 census the population of the city was 166,796. Its surrounding municipality, of which it is municipal seat, had a population of 214,219 persons...

, in the Sierra Madre del Sur

Sierra Madre del Sur

The Sierra Madre del Sur is a mountain range in southern Mexico, extending from southern Michoacán east through Guerrero, to the Istmo de Tehuantepec in eastern Oaxaca.-Geography:...

, including the areas that surround Omilteme, San Vincente, and Filo de Caballo. The type locality given is "Mexico, Omilteme in Guerrero."