Boa constrictor sigma
Explorer Langhammer gave to the world in year 1983 to discussion one more
controversial subspecies of Boa constrictor. Subspecies called Boa constrictor
sigma should have its endemic range only on island Tres Marias 100km far from
pacific coast of Mexico. To say something exact to this subspecies is quiet
hard, because it exist only 9 exemplars somewhere in museums, but no picture
But this situation does not prevent a few of breeders from offering to sell
Hogg islands imperators as Boa constrictor sigma.