I always thought imperator was diagnosed by the presence of the crossbar between the eyes. Mind you, its been 20 years since I did any reading about boa taxonomy and there wasn't much good available back then.

Here's an imperator from Mexico (with crossbar)



and one from Panama (again, with crossbar)



Are some Colombian boas considered B.c. constrictor? By what I remember, yours would be an intergrade if it isn't B.c. constrictor.
-----
Chris Harrison
San Antonio, Texas

[ Hide Replies ]

• Type of boa - jsbarnwell, Thu May 8 14:32:03 2008
• RE: Type of boa - chrish, Thu May 8 15:19:22 2008
• RE: Type of boa - DMong, Thu May 8 16:05:15 2008
• oops!, meant "imperator"! n/p - DMong, Thu May 8 16:06:32 2008
• Doug, question... - chrish, Thu May 8 16:27:31 2008
• RE: Doug, question... - DMong, Thu May 8 21:56:11 2008
• RE: Type of boa - mike1234, Thu May 8 23:24:06 2008
• Also.... - viborero, Fri May 9 08:08:05 2008
• het/homo (technically speaking...) - anuraanman, Fri May 9 10:34:14 2008
• RE: het/homo (technically speaking...) - natsamjosh, Fri May 9 13:42:19 2008
• RE: het/homo (technically speaking...) - anuraanman, Fri May 9 15:39:06 2008
• RE: het/homo (technically speaking...) - viborero, Fri May 9 16:38:30 2008
• RE: Also.... - jsbarnwell, Fri May 9 15:09:06 2008