Еуропа, Африка және Азияның құм жыландары

Subfamily of snakes

The Erycinae, also known as the Old World sand boas, are a subfamily of nonvenomous snakes in the family Boidae. Species of the subfamily Erycinae are found in Europe, Asia Minor, Africa, Arabia, central and southwestern Asia, India, Sri Lanka, and western North America. Four genera comprising 18 species are currently recognized as being valid.

Erycines are found in Southeastern Europe, Asia Minor, North, Central, West and East Africa, Arabia, Central and Southwest Asia, India, Sri Lanka, southwestern Canada, the western United States, and northwestern Mexico. Fossil erycines have been found in rock strata over 50 million years old, and were once widespread in North America. Now, only four species remain in North America, as well as the Old World sand boas proper in Africa, Asia, and Southeastern Europe. The oldest known erycines are from the Eocene aged Messel Pit in Germany, named Rageryx schmidi.

The majority of sand boas spend much of their time basking below the surface of the sand, with only their eyes or head exposed. When potential prey approaches, they erupt out of the sand, bite, and employ constriction to subdue it.

The erycines' primary diet is rodents, but they have also been known to prey on lizards and birds.

Otherwise far removed from their boine relatives, erycines are generally ovoviviparous, i. e., giving birth to live young. At least two species lay eggs, however: the Arabian sand boa, Eryx jayakari, and the West African sand boa, Eryx muelleri.

Poaching and smuggling of sand boas is often reported in India. Most of the smuggled snakes go to the United States. There is a misconception about their medicinal and aphrodisiacal properties, as well as the belief that keeping this snake as a pet brings wealth and prosperity.

Eryx colubrinus, E. conicus and E. johnii are frequently available in the exotic pet trade and are often captive bred. They breed readily, their small size making them an attractive option. They are usually not aggressive species, though they sometimes have a tendency to bite, and also spend the vast majority of their time hiding. Other species are not commonly available, but are occasionally imported.

GenusTaxon authorSpeciesSubsp. *Common nameGeographic rangeCharinaGray, 184920rubber boasNorth America from western Canada south through the western United States into northwestern MexicoEryxTDaudin, 1803132Old World sand boasSoutheastern Europe, North Africa, the Middle East and Southwest AsiaLichanuraCope, 186123rosy boasNorth America from western Canada through the southwestern United States and into northwestern Mexico
Not including the nominate subspecies. T Type genus.