Boas of Mexico were formely known as "Boa c. mexicana". This taxa, Boa c. mexicana is not valid anymore as it is considered as a synonym for mexican Boa c. imperator by most taxonomists.
Mexican boas are the northernmost relatives of the species Boa constrictor. Having an enormous distribution area, there exist several different forms in Mexico. Habitat is also very diverse. Boas are found in semi desert areas, mangrove swamps near the ocean, cloudforests. They are also native in mountainous regions up to 1500m altitude.
Their full grown size show some diversity, as well. While Tarahumara mountain boas barely reach 1m (3+ ft), boas from Sonora desert can grow up to 2,2m (7+ ft). Dorsal blotches are between 23-32. These saddles are often light brown, dark brown, sometimes greyish brown colored and often connect chain-like.
They are shy animals, showing typical defensive position when disturbed. However, captive bred specimens can adapt pretty well and most of them will become docile.
Sonoran desert boas are considered as the northernmost locality of Boa constrictor. Primary colors are dark grey with greyish brown pattern, though ligther colored specimens- similar to Tarahumara boas -are also known. They can top 2m (6,5 ft) in length.
Cancun boas are originally from Northeast areas of Quintana Roo state. They have light brown primary colors with lot of connecting saddles. They rarely reach 1,8m (6 ft). They are not common, though they are easy to breed.
In the early 90ies a student of Arizona University obtained some unique boas from Tarahumara mountains, Mexico. Due to their easy care and reproduce these boas become very popular in the US collections and not much later in European collections, as well.
Tarahumara boas are true dwarfs. Well-known US breeder Gus Rentfro bred them in 1998 for the first time. 7 years later, his holdback female could barely reach 0,95m (3 ft), meanwhile she produced 3 litters without any difficulties. This example proves perfectly that the age is much more important than size in terms of successful breeding.
CB 2016 Tumbes longtail boas
(Boa c. longicauda)details..