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Distribution

See Geographical Distribution to narrow down the possible culprits on country/state level.

Biological Features

The Far East

Description of the most important representatives:

  General behaviour Habitats Appearance Defensive behaviour Factors relevant to envenoming

Bungarus sp.


nocturnal

ground-dwelling

forests, open areas, agricultural zones, populated areas

slender snakes, smallest species between 70 and 90 cm long, largest up to 2 m; several species with clear cross bands along the body

very shy during the day; when threatened the head is hidden under the coils of the body

bites only occur at night, and many victims are bitten while sleeping; the bite often goes unnoticed and the victim awakes with neurotoxic symptoms

Naja sp.


nocturnal and diurnal

ground-dwelling

forests, open areas, agricultural zones; often in densely populated areas

slender to sturdy body; wide head, but not clearly distinct from the body; length 1–2 m

raising the first third of the body, neck region is spread out into a flat hood; some species with a marking on the back of the flattened hood (see picture)

not known

Ophiophagus hannah

nocturnal or diurnal

ground-dwelling

primarily in dense forest, sometimes also in open areas; never in densely populated areas

appearance as for Naja sp., but up to 4 or 5 m long; sturdy body, yet appears slender

as for Naja sp. (see above); in the defensive position can raise their head to a height of over 1.5 m from the ground; grunting warning sound

bites are rare

Daboia russelli ssp.

primarily nocturnal

ground-dwelling

open grasslands or scrubland; plantations, often in rice fields

sturdy body with an average length of 1 m (maximum 1.5 m); body markings consist of dark ovals

repeated, intermittent puffing through the large nostrils; at the same time the body is formed into taut coils

victims are chiefly rural workers, primarily in rice fields

Gloydius sp.


nocturnal in warm weather, diurnal in cool; in cooler regions they hibernate

ground-dwelling

in deserts, semi-deserts and stony regions, but also in forested areas; some species in alpine areas; G. blomhoffii in wet, preferably forested regions and in agricultural areas (rice fields)

sturdy body, generally under 1 m in length

flattening of the body; the tip of the tail is vibrated, which causes a rustling sound in loose substrate (e.g. leaves)

not known

Deinagkistrodon acutus

nocturnal in warm weather, diurnal in cool; in cooler regions they hibernate

ground-dwelling

in forested, hilly and mountainous regions, prefer rocky areas

sturdy body with tapering head; characteristic upturned "horn" on the tip of the snout

the tip of the tail is vibrated, which causes a rustling sound in loose substrate (e.g. leaves)

dangerous snakes that are commonly collected in China for the production of traditional medical remedies; bite victims are often snake catchers

Trimeresurus sp.
Ovophis sp.
Protobothrops sp.  

most species are arboreal (bushes and shrubs), some are ground-dwelling

wooded regions, open areas with bushes and shrubs, parks in cities, gardens

smaller snakes under 1 m; the most important species in medical terms are green, without markings

body is held in an S-shaped coil

common cause of snakebites

Snake available

Morphological Identification

Morphological key to the terrestrial venomous snakes

(excluding sea snakes)

Only ever pick up dead snakes! Caution - reflex bites are possible in snakes that have only just been killed. Hold the snake with one hand behind the head, and with the other hand open the mouth using tweezers and observe the dentition (also look for teeth that may be hidden in mucosal folds). 
 
  Are all the teeth +/- of the same size?  yes  

Harmless snakes

(local symptoms may occur)

  no 
     
       
  Enlarged teeth (venom fangs, generally grooved at the front or with a venom duct orifice near the tip) are +/- at the back; there are always normal teeth in front of these venom fangs! yes  

some species of Colubridae

 
   no 
     
       
  Venom fangs are at the very front of the row of teeth and are +/- fixed (not moveable) in the upper jaw. May be so small as to be barely visible! yes
   

Elapidae (no Elapidae in Europe!)

» proceed to regional identification
   no 
     
       
  Exceedingly long venom fangs at the very front of the upper jaw that can be erected forwards, in rare cases laterally. Normally they are folded back and covered by mucosal sheaths!    
           
     
  Is there a pit between the nostril and the eye? yes
   

Crotalinae (no Crotalinae in Central and Southern Africa, and Australia!)

» proceed to regional identification
    no      
       
  Viperinae (no Viperinae in the Americas and Australia!)

» proceed to regional identification