As our Tumbes boa female entering the last part of her gravidity, it is inevitable to talk about appearance of Boa c. longicauda, as well...
Only a few Boa constrictor localities can change colors as much as Boa c. longicauda in 2-3 years. Although adult Tumbes boas very distinct, unique looking snakes that are unlikely to be mistaken for any other boas, few weeks old Tumbes boas are much less characteristic, with low contast patterns. Inexperienced hobbysts max have difficulties distinguishing a few weeks old Tumbes boa and a young crossbred boa. However, head-spear is remarkable, even if it is pale at early age. Tail also has much less colors.
At age 1-2 years Tumbes boas will undergo changes like no other Boa constrictors. The pale patterns will start to gain contast, primary colors will turn golden-yellow, but dark basic tone will also appear at the same time. Adult specimens often have jet-black patterns with typical head area. Oldest Tumbes boas feature greyish head area which is noticeably ligther than the body, therefore they used to be called as "blue-head" boas. There can be major differencies in the final appearance even between specimens from the very same litter.
Pictures below describe 2 specimens at age 6 months and 7 years. We don't claim these two boas represents the whole diversity of all Tumbes boas, however they give a hint regarding those dramatic changes between early age and adulthood.
For further information on Tumbes boas, please click at Boa c. longicauda menu.
CB 2016 Tumbes longtail boas
(Boa c. longicauda)details..