''Opisthotropis atra'' is a
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
of
natricine snake.
[ www.reptile-database.org.]
References
Opisthotropis
Reptiles described in 1872
Taxa named by Albert Günther
{{Natricinae-stub