US Snakes Genera

Card Set Information

Author:
wdrusinowii
ID:
14407
Filename:
US Snakes Genera
Updated:
2010-04-13 22:48:13
Tags:
Reptiles snake morphology US Genera
Folders:

Description:
A Brief description of US Snake Genera
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user wdrusinowii on FreezingBlue Flashcards. What would you like to do?


  1. LEPTOTYPHLOPIDAE
    Leptotyphlopidae
    • Blind Snakes
    • No transversely elongated scales present on belly
    • Eyes covered with scales
    • Worm-like
  2. CROTALIDAE
    Agkistrodon
    • Cottonmouth and Copperheads
    • No Rattle
    • Pit between eye and nostril
  3. CROTALIDAE
    Sistrurus
    • Massasauga Rattlesnakes
    • Top of head covered with large scales
    • Rattle on head of tail
    • Pit between eye and nostril
  4. CROTALIDAE
    Crotalus
    • Rattlesnakes
    • Top of head covered with small scales,(or not behind eyes)
    • Rattles
    • Pit between eye and nostril
  5. BOIDAE
    Charina
    • Rosy Boas
    • No paired elongate scales between lower labials of right and left side
    • No pit between eye and nostril
  6. ELAPIDAE
    Micruroides
    • Coral Snake
    • Ring on neck red
    • A pair of short permanently erect grooved fangs in anterior part of upper jaw
    • All US species black red and yellow
  7. ELAPIDAE
    Micrurus
    • Coral Snake
    • Ring on neck black
    • A pair of short permanently erect grooved fangs in anterior part of upper jaw
    • All US species black red and yellow
  8. COLUBRIDAE
    Heterodon
    • Hog-nose snakes
    • Rostral turned upward and keeled
    • Anal Plate divided
    • Keels
  9. COLUBRIDAE
    Storeria
    • Common Brown Snake
    • No loreal
    • Rostral not turned upward and keeled
    • Anal Plate divded
    • Keels
  10. COLUBRIDAE
    Virginia
    WARNING SHITTY SNAKE
    • Earth Snakes
    • More than 13 scale rows, less than 27
    • Nasal Plate divided
    • No belly spots
    • Rounded pupil
    • 6 upper labials
    • Less than 8 lower labials
    • No preoculars
    • Loreal and 2 prefrontals in contact with eye
    • Anal plate not/divided
    • Smooth Scales
  11. COLUBRIDAE
    Regina
    • Queen Snakes
    • 19 Scale rows
    • Ventrals fewer than 140
    • 5-7 Supralabials
    • 9-11 lower labials
    • 1/2 preoculars
    • 2/3 postoculars
    • Anal plate divided
    • Strongly Keeled scales
  12. COLUBRIDAE
    Seminatrix
    • Swamp Snakes
    • Fewer than 60 caudals
    • No dark line from rostral to last upper labial
    • 8 upper labials
    • 17 scale rows
    • 2 internasals
    • 1 preocular
    • Loreal
    • Anal Plate divided
    • Smooth some keeled scales
  13. COLUBRIDAE
    Opheodrys
    • Rough Green Snake (blue or brown in alcohol
    • Posterior chin shields about as long as anterior chin shields
    • Cauduals more than 65
    • Nasal plate entire
    • No ring on neck
    • No black spots on belly
    • 1 anterior temporal
    • Lower preocular not wedged between upper labials
    • Rostral normal
    • 7 upper labials
    • 7 or 8 lower labials
    • 17 scale rows
    • 1/2/3 preoculars
    • Loreal
    • Anal plate divided
    • Smooth Scales
  14. COLUBRIDAE
    Drymobius
    • Neotropical racers
    • 9 upper labials
    • 10 or 11 lower labials
    • dorsal color dark with a light spot on each scale
    • middorsal scales faintly keeled
    • More than 100 rows of caudals
    • 17 scale rows
    • 1 or 2 preoculars
    • 2 internasals
    • loreal
    • Anal plate divided
  15. COLUBRIDAE
    Nerodia
    • Water Snakes
    • 20-23 scale rows
    • 8-10 supralabials
    • 2/3 postoculars
    • 1/2 preoculars
    • 2 internasals
    • Loreal
    • Anal plate divided
    • Strongly keeled scales
  16. COLUBRIDAE
    Clonophis
    • Kritland's snake
    • Lower labials 7
    • 1 preocular
    • 3 postocular
    • 19 Scale rows
    • 2 internasals
    • Loreal
    • Anal plate divided
    • Keeled scales
  17. COLUBRIDAE
    Pituophis
    • Gopher Snakes
    • 27 or more scale rows
    • Usually 4 prefrontals
    • Anal Plate not divided
    • Keeled Scales
  18. COLUBRIDAE
    Thamnophis
    • Garter Snakes
    • 8 or more lower labials
    • Rounded Pupil
    • No suboculars
    • Rostral normal
    • Fewer than 27 scale rows
    • 2 prefrontal
    • Anal Plate not divided
    • Keeled scales
  19. COLUBRIDAE
    Tropidoclonion
    • Lined Snakes
    • Double row of black belly spots
    • Fewer than 8 lower labials
    • Rounded Pupil
    • No suboculars
    • Rostral normal
    • Fewer than 27 scale rows
    • Anal plate not divided
    • Keeled scales
    • 2 prefrontals
    • See full size image
  20. COLUBRIDAE
    Rhinocheilus
    • Long-nose snakes
    • Most caudals entire
    • Anal plate not divided
    • Smooth scales
  21. COLUBRIDAE
    Stilosoma
    • Short Tailed Snakes
    • No Loreal
    • Pupil round
    • All or most caudals divided
    • Anal Plate not divided
    • Smooth Scales
  22. COLUBRIDAE
    Cemophora
    • Scarlet Snakes
    • 6-7 Upper labials
    • 8 Lower labials
    • Light Ventral surface without marking
    • Loreal
    • Rounded Pupil
    • Caudals divided
    • Anal Plate not divided
  23. COLUBRIDAE
    Arizona
    • Glossy Snakes
    • 8 Upper labials
    • 12-15 Lower labials
    • Light Ventral surface without marking
    • Loreal
    • Rounded Pupil
    • Caudals divided
    • Anal Plate not divided
  24. COLUBRIDAE
    Drymarchon
    • Indigo Snakes
    • 17 Scale rows
    • Ventral surface with some dark markings
    • Loreal
    • Rounded Pupil
    • Caudals divided
    • Anal Plate not divided
  25. COLUBRIDAE
    Lampropeltis
    • King and Milk Snakes
    • More than 17 scale rows
    • Ventral surface with some dark markings
    • Loreal
    • Rounded Pupil
    • Caudals divided
    • Anal Plate not divided
  26. COLUBRIDAE
    Carphophis
    • Worm Snakes
    • 13 scale rows
    • Nasal plate entire
    • 5 upper labials
    • No preoculars
    • Loreal and prefrontal in contact with eye
    • Anal plate divided
    • Smooth scales
    • See full size image
  27. COLUBRIDAE
    Salvadora
    • Patch-nosed snake
    • Rostral Much enlarged with free lateral edges
    • 2 or 3 preoculars
    • Loreal
    • Anal plate divided
    • Smooth Scales
  28. COLUBRIDAE
    Coluber
    • Racers
    • Scale rows at posterior end of body 15
    • 2 or 3 anterior temporals
    • Lower preocular very small, wedged between upper labials
    • Rostral normal
    • 2 or 3 preoculars
    • Loreal
    • Anal plate divided
    • Smooth Scales
  29. COLUBRIDAE
    Masticophis
    • Whipsnakes
    • Scale rows at posterior end of body 11-13
    • 2 or 3 anterior temporals
    • Lower preocular very small, wedged between upper labials
    • Rostral normal
    • 2 or 3 preoculars
    • Loreal
    • Anal plate divided
    • Smooth Scales
  30. COLUBRIDAE
    Diadophis
    • Ring-necked Snake
    • Nasal plate divided
    • Ring on neck/black spots on belly
    • 1 anterior temporal
    • lower preocular not wedged between upper labials
    • Rostral normal
    • 2/3 preoculars
    • Loreal
    • Fewer than 19 Scale rows
    • Anal Plate divided
    • Smooth Scales
  31. COLUBRIDAE
    Contia
    • Sharp Tailed Snakes
    • Each ventral with a dark anterior border
    • Usually a light stripe on 4th or 5th scale row
    • Posterior chin shield much shorter than anterior chin shields
    • less than 65 caudals
    • Less than 17 scale rows
    • 1 preocular
    • Loreal
    • Anal plate divided
    • Scales Smooth
  32. COLUBRIDAE
    Sonora
    • North American ground snake
    • Normal snout
    • No nasal valve
    • Ventral surface uniform light color, possible black rings
    • Posterior chin sheild much shorter than anterior chin shields
    • less than 65 caudals
    • Less than 17 scale rows
    • 1 preocular
    • Loreal
    • Anal plate divided
    • Scales Smooth
  33. COLUBRIDAE
    Rhadinaea
    • Pine woods snakes
    • More than 60 caudals
    • A dark line form rostral through eye to last upper labial
    • 7 upper labials
    • 17 scale rows
    • 1 preocular
    • Loreal
    • Anal Plate divided
    • Smooth scales
  34. COLUBRIDAE
    Chilomeniscus
    • Sand Snakes
    • 13 Scale rows
    • No loreal
    • Anal Plate divided
    • Smooth Scales
  35. COLUBRIDAE
    Chionactis
    • Shovel nose snakes
    • Snout flattened, shovel like
    • nasal valve present
    • 15 Scale rows
    • Ventral surface uniform light color, possible black rings
    • Posterior chin sheild much shorter than anterior chin shields
    • less than 65 caudals
    • 1 preocular
    • Loreal?
    • Anal plate divided
    • Scales Smooth
  36. COLUBRIDAE
    Tantilla
    • Black headed Snakes
    • Normal snout
    • 15 Scale rows
    • No loreal
    • Anal Plate divided
    • Smooth Scales
  37. COLUBRIDAE
    Oxybelis
    • Vine Snakes
    • Head long and nose sharp
    • Tail long and slender
    • 17 Scale rows
    • No loreal
    • Anal Plate divided
    • Smooth scales
  38. COLUBRIDAE
    Ficimia
    • Southern Hook-nosed Snakes
    • Rostral relatively large, separating prefrontals and in contact with frontal
    • Head Shorter, rostral acute and turned up at tip
    • Tail short and thick
    • 17 Scale rows
    • No loreal
    • Anal Plate divided
    • Smooth scales
  39. COLUBRIDAE
    Gyalopion
    • Desert Hooknose Snakes
    • Rostral Smaller, separating small internasals and in contact with prefrontals
    • Head Shorter, rostral acute and turned up at tip
    • Tail short and thick
    • 17 Scale rows
    • No loreal
    • Anal Plate divided
    • Smooth scales
  40. COLUBRIDAE
    Elaphe
    • Fox, Rat, Corn Snakes
    • 25 or more scale rows
    • Rounded Pupil
    • 1 or more preoculars
    • 2 postoculars
    • 2 internasals
    • Loreal
    • Anal plate divided
    • Smooth/Weakly keeled Scales
  41. COLUBRIDAE
    Coniophanes
    • Black striped Snakes
    • 19 scale rows
    • Rounded pupil
    • 1 or more preoculars
    • Anal plate divided
    • Smooth Scales
  42. COLUBRIDAE
    Hypsiglema
    • Night Snakes
    • Dorsal pattern consists of small blothces or 1 or 2 series of smaller alternating spots on sides
    • 1 loreal
    • 2 postoculars
    • 1 anterior temporal
    • 7-8 upper labials
    • Elliptical pupil
    • 1 or more preopticals
    • 19 or more scale rows
    • Anal plate divided
    • All scales smooth
  43. COLUBRIDAE
    Leptodeira
    • Cat-Eyed Snakes
    • Dorsal Pattern of 22-26 large blotchs with no alternating lateral spots
    • 1 loreal
    • 2 postoculars
    • 1 anterior temporal
    • 7-8 upper labials
    • Elliptical pupil
    • 1 or more preopticals
    • 19 or more scale rows
    • Anal plate divided
    • All scales smooth
  44. COLUBRIDAE
    Farancia
    • Rainbow/Mud Snakes
    • Stripes?
    • 7 upper labials
    • 8-10 lower labials
    • 1 internasals
    • No preocular
    • ventrals more than 160
    • Loreal
    • 19-21 scale rows
    • Anal Plate divided
    • Smooth scales
  45. COLUBRIDAE
    Trimorphodon
    • Lyre Snakes
    • No suboculars
    • Elliptical Pupils
    • All or most caudals divided
    • Anal Plate not divided
    • Scales smooth
  46. COLUBRIDAE
    Phyllorhynchus
    • Leaf-nosed snakes
    • Suboculars present
    • Elliptical Pupil
    • Rostral very large with free lateral edges
    • Fewer than 27 scale rows
    • 2 prefrontals
    • All or most caudals divided
    • Anal plate not divided
    • Smooth/keeled Scales

What would you like to do?

Home > Flashcards > Print Preview