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Bothrops
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by SnakeMaster25 on September 18, 2004
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Hi I was just wondering what's the difference between Bothrops atrox and Bothrops asper. Also, whats the difference between Bothrops atrox and Bothrops venezuelensis?
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RE: Bothrops
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by paleoherp on September 18, 2004
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hi i ll show you some pics.
bothrops atrox-- http://www.omnh.ou.edu/personnel/herpetology/vitt/pics/Batrox.jpg
bothrops asper-- http://itgmv1.fzk.de/www/itg/uetz/herp/photos/Bothrops_asper3.jpg
Bothrops venezuelensis-- http://www.gifte.de/images/Bothrops%20venezuelensis.jpg
they can show variation and will take a long time to describe.
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RE: Bothrops
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by CAISSACA on September 20, 2004
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Bothrops atrox vs. Bothrops asper:
The single best character to distinguish them is the dark postocular stripe: In B. atrox, it is usually fairly broad and encroaches on the last three supralabials (covering more than half of the last), whereas in B. asper, it is narrow and usually only encroaches on the last supralabial (of which it covers less than half).
B. venezuelensis differs most obviously in having a rounded snout (seen from above - much more pointed in B. atrox and B. asper), and a belly that is heavily pigmented with fine black speckles, whereas B. atrox and B. asper have a more or less obvious dark checkerboard pattern. Juveniles can be more difficult to distinguish. Surprisingly, B. venezuelensis is actually not at all closely related to B. atrox and B. asper.
Cheers,
Wolfgang
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