Agkristrodons? - experts Forum at VenomousReptiles.org

Agkristrodons?	Reply
by ALA_herp31 on December 9, 2004	Mail this to a friend!
I know of the Species in this Genus that live in the Americas, so can anyone tell me how many other Species in this Genus live around the world? (that is if thare are any "LOL") I have never heard of any, I have looked for it on the net for the past week and have not found any info. I dont know if thare are any others but would like to be sure. So if anyone can help I would apriciat it. Thanks ya'll.......Happy herping Wally

RE: Agkristrodons?	Reply
Anonymous post on December 9, 2004	Mail this to a friend!
Its actually spelled Agkistrodon. THere are the Northern copperhead:A.contortrix mokasen Southern copperhead:A.contortrix contortrix Osage Copperhead:A.contortrix pheaogaster Broad Banded copperhead:A.contortrix laticinctus Trans-Pecos copperhead:A.contortrix pictigaster Common Cantil:A.bilineatus bilineatus Taylors Cantil:A.bilineatus taylori this isnt agkistrodon but theres also a genus called Deinagkistrodon.

RE: Agkristrodons?	Reply
by GREGLONGHURST on December 9, 2004	Mail this to a friend!
Yeah, there are several, plus closely related genera, some of which used to be called Agkistrodon. Best reference material is "Snakes of the Agkistrodon Complex" A Monographic Review by Howard K. Gloyd & Roger Conant. Three species of Agkistrodon you may want to look up are intermedius, halys, & blomhoffi. Some related genera you may want to check on are Hypnale, Deinagkistrodon, & Calloselasma. ~~Greg~~

RE: Agkristrodons?	Reply
by vavenomguy on December 9, 2004	Mail this to a friend!
blomhoffi, hayles, and all the other mamushis have been reassigned to the genus Gloydus (W.Wuster, " Recent developments in venomous snake systematics Part 2"

RE: Agkristrodons?	Reply
by Snakeman1982 on December 9, 2004	Mail this to a friend!
The current species in Agkistrodon are: Agkistrodon c. contortrix - Southern Copperhead A. c. phaeogaster - Osage Copperhead A. c. pictigaster - Trans-pecos copperhead A. c. mokasen - Northern copperhead A. c. latcinctus - Broad-banded copperhead A. p. piscivorus - Eastern Cottonmouth A. p. leucostoma - Western Cottonmouth A. p. conanti - Florida Cottonmouth A. b. bilineatus - Mexican cantil A. b. howardgloydi - Castanella (spelling?) A. b. russeolus - Yucatan Cantil A. taylori (previously A. b. taylori) - Ornate Cantil The species in Asia that were in the genus Agkistrodon are no longer in that genus. They are now in genera like Gloydius, Calloselasma, Deinagkistrodon, and Hypnale. Many were considered closely related due to similar body structure and large head plates. Though in recent studies it appears that these head plates are less important than previously thought (for example Sistrurus ravus is now Crotalus ravus even though it has these head plates). The snakes of the Agkistrodon complex is an excellent book if you are interested in all these species. Robert

RE: Agkristrodons?	Reply
by Nightflight99 on December 9, 2004	Mail this to a friend!
Good overview, Robert. There is also Agkistrodon b. lemosespinali from Palma Sola, Veracruz. It might be worth mentioning that much of the Agkistrodon taxonomy is based mostly on morphological traits, and there are currently several studies underway that are investigating the phylogenetic relationship of some of these taxa, based on DNA. ~TE

RE: Agkristrodons?	Reply
by Snakeman1982 on December 9, 2004	Mail this to a friend!
Really!!! I haven't heard of that subspecies. I'll have to look into that. Any reference advice? One thing to add to the forum. A new book has come out by Gumprecht et.al. "Asian Pitvipers". I have it reserved on back order right now for $95 but haven't seen a hard copy of it yet. It should be really good and I am hoping it will be in whenever I return from my month of field research in Bolivia. It should have good stuff on all those old world species. So if you buy the "Venomous Reptiles of the Western Hemisphere" in collaboration with that book, you should have all the pitvipers covered. Pretty cool. By the way Thomas, I met with your advisor a couple of months ago when he visited OU. He is a super nice guy and I got to hang out with him for a couple days. Sounds like you got some cool stuff going on at SELU. Robert

RE: Agkristrodons?	Reply
by ALA_herp31 on December 9, 2004	Mail this to a friend!
Sorry about the spelling, I was in a hury. Thanks for the info ya'll, gives me a point to start at "LOL"...Thanks again......Happy herping Wally

RE: Agkristrodons?	Reply
by ALA_herp31 on December 9, 2004	Mail this to a friend!
Robert, I am truly interested in the Agkistrodon Genus, they are my favorets. I havent been able to aford any of the books latly because of no work, but I do plane to try and get the book (Agkistrodon comlex) as soon as posable. Thanks again ya'll, apriciate the help.....Happy herping Wally

RE: Agkristrodons?	Reply
by Nightflight99 on December 9, 2004	Mail this to a friend!
Robert, the reference is Smith, H.M. & D. Chiszar (2001) A new subspecies of cantil (Agkistrodon bilineatus) from Central Veracruz, Mexico (Reptilia: Serpentes). Bulletin of the Maryland Herpetological Society, 37: 130-136. Yes, Brian is a super nice guy and one of the top phylogeneticists in the country. He did bring back a cold from OU.. :) Have fun in Bolivia - I've been there many times and lived there for a while when I was a young. It is a beautiful country with an interesting biogeography and will definitely be an amazing experience for you. ~TE

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