big boa

[C.m.pyrrhus]

Anacondas are listed as Boinae( <a href="http://www.embl-heidelberg.de/~uetz/families/Boidae.html">Boinea listings in the EMBL</a> ), otherwise known as boas. They are as well the largest new world species of snake. Under them I would agree that Argentines and some Bcc species to be the next largest, but averages for total length are different. The largest Boa constrictor ssp that I know of was a B.c.o.

[Gary D.]

I would tend to disagree with the B.c.o. being the largest of the Boa constrictor complex. The Peruvian B.c.c. is widely considered the largest Boa ssp. It has been argued that Trinidad B.c.c. are contenders for the title as well. It has also been suggested that the common perception that Guyanan shield B.c.c.'s surpassing Colombian B.c.i. in size is infact wrong. It is supported by the fact there are more 9-10' B.c.i. (percentage wise) in captivity than there are B.c.c.