Re: YES!

Posted by David on March 29, 2001 at 09:12:26:

In Reply to: YES! posted by Doug T on March 27, 2001 at 12:52:47:

: : Anyone interested in a description of Drymarchon from "The Snakes of Honduras"( refers in passing to the speices of mexico). I also have one on margaritae, but its in german.
Here goes; Drymarchon corais ; range-low to moderate elevations from southern Texas on the the Atlantic versant & southern Sonora, Mexico on the Pacific, to Argentina; also occurs in the southeastern US.
Description; A very large snake( max recorded totle length, 2950 mm) with a single nasal; loreal single; preocular single; postoculars 2; temporals 2+1 to 2+3, usually 2+2; supralabials 7 to 9, usually 8 (8-8 in all Honduran specimens) antepenultimate one wedged-shaped & separated from temporals by contacy of adjacent supralabials or not (in contact with temporal on 20 sides; not on 6 sides); infralabials usually 8 (8-8 in all Honduran specimens); ventrals 182 to 217 ( 193 yo 207 in Honduran specimens; anal plate single; subcaudals 55 to 88 (68 to 80 in Honduran specimens); dorsal scales smooyh, with two apical pits, in 19 to 17 rows anteriorly; 17 fows at midbody, & 13 to 15 rows posteriorly.
Taxonomic comments- Coloration in this widespread species is geographically variable. The more Northerly distributed populations (those in the US, northeastern Mex, & western Mex given the subspecific epithets couperi, erebennus, orbizabenis, & rubidus) are predominately black dorsally (certain pupulations in western Mex excepted; see below). Those in Middle America & northern South America (Veracruz & Chiapas, Mex south to northern South America- melanurus & unicolor) are gray, brown, gray-brown or olive brown dorsally, uniformly so or grading to dark gray, dark gray-brown or dark black on the posterior portion of the body & tail. In the remainder of the range in South America the dorsum is dark anteriorly & pale posteriory or black with irregular crossbands which increase in prominance posteriorly (corais & margaritae).
more to come!

Follow Ups:

• the rest David 03/30/01 (1)
  • Thanks a lot for sharing that David...good stuff. Dean Alessandrini 03/31/01 (0)

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: : : Anyone interested in a description of Drymarchon from "The Snakes of Honduras"( refers in passing to the speices of mexico). I also have one on margaritae, but its in german. : Here goes; Drymarchon corais ; range-low to moderate elevations from southern Texas on the the Atlantic versant & southern Sonora, Mexico on the Pacific, to Argentina; also occurs in the southeastern US. : Description; A very large snake( max recorded totle length, 2950 mm) with a single nasal; loreal single; preocular single; postoculars 2; temporals 2+1 to 2+3, usually 2+2; supralabials 7 to 9, usually 8 (8-8 in all Honduran specimens) antepenultimate one wedged-shaped & separated from temporals by contacy of adjacent supralabials or not (in contact with temporal on 20 sides; not on 6 sides); infralabials usually 8 (8-8 in all Honduran specimens); ventrals 182 to 217 ( 193 yo 207 in Honduran specimens; anal plate single; subcaudals 55 to 88 (68 to 80 in Honduran specimens); dorsal scales smooyh, with two apical pits, in 19 to 17 rows anteriorly; 17 fows at midbody, & 13 to 15 rows posteriorly. : Taxonomic comments- Coloration in this widespread species is geographically variable. The more Northerly distributed populations (those in the US, northeastern Mex, & western Mex given the subspecific epithets couperi, erebennus, orbizabenis, & rubidus) are predominately black dorsally (certain pupulations in western Mex excepted; see below). Those in Middle America & northern South America (Veracruz & Chiapas, Mex south to northern South America- melanurus & unicolor) are gray, brown, gray-brown or olive brown dorsally, uniformly so or grading to dark gray, dark gray-brown or dark black on the posterior portion of the body & tail. In the remainder of the range in South America the dorsum is dark anteriorly & pale posteriory or black with irregular crossbands which increase in prominance posteriorly (corais & margaritae). : more to come!

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