12/28/2011
The kingsnake species which constitute the "Mexicana" complex are perhaps the most enigmatic and misunderstood of North America's reptiles. Little information is known about their habits, ranges, or taxomony. This group is constantly being reclassified as new information becomes available, and the genetic puzzle that links all the snakes together is being solved.
These are the southern most representatives of the vast "Lampropeltis" genus, which extends from coast to coast across North America. Mexicana kings, as their namesake suggests, inhabit North/Central Mexico and extend up into the Transpecos region of Texas.
Some species in this group have proven to be closely linked with the Mountain Kings of the species "pyromelana" and "zonata". However, ruthveni seems to be closer to the milksnake group "triangulum."
Unfortunately there are few of these snakes in the pet trade compared to the more popular kings, milks, cornsnakes, ratsnakes, and pythons that dominate the market. Part of the problem is that getting fresh blood into the captive strains isn't easy considering how elusive these snakes are, and Mexico's exporting laws. However, it seems they are building up more popularity as more people are begining to appreciate their unique beauty, color schemes, and extremely variable phenotypes. Variable Kings (Nuevo Leon) "Lampropeltis mexicana thayeri" are the most popular of the group so far in captive collections.
Rockin' Fact - The pure amelanistic (or albino) mutation that arrised in Amaelco locality rutheni stock was outcrossed into closely related kingsnakes (mostly other tricolors). Thus they are responsible for most of the popular albino milksnakes in the hobby today.