Nelson's milksnake
Nelson's milksnake is a subspecies of king snake that is found in Mexico from southern Guanajuato and central Jalisco to the Pacific Coast. It is also found on the narrow plains of northwestern Michoacán and on the Tres Marias Islands. The range of this snake appears to be tied to the proximity of watercourses, including ones utilized for irrigation and agriculture. It is a subspecies of the milksnake, Lampropeltis triangulum''. It is similar in size to other king snakes, averaging long, and like them, it is nonvenomous.
Etymology
Botthe specific name, nelsoni, and the Common name, "Nelson's milksnake", are in honor of American ornithologist Edward William Nelson who worked for the U.S. Biological Survey from 1890, becoming chief in 1916.Size
Adults of Lampropeltis triangulum nelsoni average in total length.Habitat
The preferred natural habitats of Lampropeltis triangulum nelsoni are semi-arid coastal thorn scrub and interior tropical deciduous forests.Diet
Lampropeltis triangulum nelsoni is an opportunistic feeder. It will eat birds, small rodents, lizards, amphibians, and other snakes, including venomous species. It has a natural tolerance to the venoms of many native venomous snakes.Appearance
Lamporopeltis triangulum nelsoni has 13 to 18 red rings and commonly has a dark-flecked light snout. While the red bands are quite wide, the black ones are noticeably thinner, and the white is very thin. There is practically no black tipping on both the white and the red scales. Albinism and pattern aberrancies are established. It has 19 to 23 rows of smooth scales and a single anal plate.Until noted by Kenneth L. Williams in 1978, it was not recognized that the L. t. sinaloae, or Sinaloan milksnake, found near Mazatlán, Sinaloa, Mexico, is a subspecies of milksnake distinct from the less common L. t. nelsoni.