The smooth earth snake (''Virginia valeriae'') is a
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of nonvenomous
natricine colubrid
Colubridae (, commonly known as colubrids , from la, coluber, 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest species of the family date back to the Oligocene epoch. Colubrid snakes are found on ever ...
snake
Snakes are elongated, Limbless vertebrate, limbless, carnivore, carnivorous reptiles of the suborder Serpentes . Like all other Squamata, squamates, snakes are ectothermic, amniote vertebrates covered in overlapping Scale (zoology), scales. Ma ...
native to the eastern half of the United States.
Etymology
The
specific name or epithet, ''valeriae'', is in honor of
Valeria Biddle Blaney (1828–1900), who collected the first specimen in
Kent County, Maryland
Kent County is a county located in the U.S. state of Maryland. As of the 2020 census, its population was 19,198, making it the least populous county in Maryland. Its county seat is Chestertown. The county was named for the county of Kent in En ...
, and was a first cousin of
Spencer Fullerton Baird
Spencer Fullerton Baird (; February 3, 1823 – August 19, 1887) was an American naturalist, ornithologist, ichthyologist, Herpetology, herpetologist, and museum curator. Baird was the first curator to be named at the Smithsonian Institution. He ...
.
Geographic range
The smooth earth snake is found from
Texas
Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...
and
Iowa
Iowa () is a state in the Midwestern region of the United States, bordered by the Mississippi River to the east and the Missouri River and Big Sioux River to the west. It is bordered by six states: Wisconsin to the northeast, Illinois to the ...
to
New Jersey
New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware ...
and
Florida
Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...
.
Description
The following is a description of the scalation of ''V. valeriae''. Rostral nearly as deep as broad, visible from above; internasals much shorter than the prefrontals; frontal longer than broad, shorter than the parietals; loreal one and a half to two and a half times as long as deep; two or three postoculars; temporals 1+2; six upper labials, third and fourth entering the eye; four lower labials in contact with the anterior chin shields, which are as long as or shorter than the posterior.
Dorsal scales
In snakes, the dorsal scales are the longitudinal series of plates that encircle the body, but do not include the ventral scales. Campbell JA, Lamar WW (2004). ''The Venomous Reptiles of the Western Hemisphere''. Ithaca and London: Comstock Publis ...
in 15 or 17 rows. Anal divided. Ventrals 111-135; subcaudals 24-37.
The following description of coloration of a live specimen (not in alcohol) uses
Robert Ridgway
Robert Ridgway (July 2, 1850 – March 25, 1929) was an American ornithologist specializing in systematics. He was appointed in 1880 by Spencer Fullerton Baird, secretary of the Smithsonian Institution, to be the first full-time curator of bird ...
's ''Color Standards and Color Nomenclature'' (1912). Dorsally ''Virginia valeriae'' is benzo brown, deep brownish drab, mars brown, or light brownish drab. The first row of dorsal scales is colored like the adjacent ventrals, which are light vinaceous-fawn, pale vinaceous-fawn, pale grayish vinaceous, or pale vinaceous-pink. The top of the head is hair brown or like the dorsum, with many dark spots on the plates. The upper labials are ecru-drab or lighter, some with drab-gray spots. There is a small black ring around the eye. The ventral surface of the head is white.
[ Wright AH, Wright AA (1957). ''Handbook of Snakes of the United States and Canada''. Ithaca and London: Comstock. 1,105 pp. (in 2 volumes) (''Haldea valeriae'', pp. 290-293, Figure 89 + Map 27 on p. 288).]
Sometimes a faint median light line is present. Also, there may be tiny black spots on the back and sides, especially in the
nominate race
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...
(''Virginia valeriae valeriae'').
Adults are usually in total length (including tail); record .
[ Conant R (1975). ''A Field Guide to Reptiles and Amphibians of Eastern and Central North America, Second Edition''. Boston: Houghton Mifflin. xvii + 429 pp. + Plates 1-48. (hardcover), (paperback). (''Virginia valeriae'', pp. 167-168 + Plate 22 + Map 125).]
Habitat
The smooth earth snake is a small,
fossorial
A fossorial () animal is one adapted to digging which lives primarily, but not solely, underground. Some examples are badgers, naked mole-rats, clams, meerkats, and mole salamanders, as well as many beetles, wasps, and bees.
Prehistoric eviden ...
species which spends most of its time buried in loose soil or leaf litter.
Diet
The smooth earth snake eats primarily
earthworm
An earthworm is a terrestrial invertebrate that belongs to the phylum Annelida. They exhibit a tube-within-a-tube body plan; they are externally segmented with corresponding internal segmentation; and they usually have setae on all segments. Th ...
s and soft-bodied
arthropod
Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arth ...
s.
Behavior
Given its lack of sufficient defense mechanisms against larger animals, the smooth earth snake is generally not aggressive towards humans and is harmless if encountered. While it does have teeth, the size of the mouth and teeth make any strikes against humans superficial at worst. It may defecate as a defense mechanism to make itself less palatable to would-be predators. If necessary, it can be safely picked up by hand and relocated.
Subspecies
Including the
nominotypical subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...
, three
subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...
of ''Virginia valeriae'' are recognized as being valid. These subspecies have been considered full species.
[
*''Virginia valeriae elegans'' – western earth snake, dorsal scales in 17 rows, southern ]Indiana
Indiana () is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th s ...
through western Kentucky
Kentucky ( , ), officially the Commonwealth of Kentucky, is a state in the Southeastern region of the United States and one of the states of the Upper South. It borders Illinois, Indiana, and Ohio to the north; West Virginia and Virginia to ...
and Tennessee
Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to th ...
to the Gulf of Mexico
The Gulf of Mexico ( es, Golfo de México) is an oceanic basin, ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of ...
, westward to eastern Kansas
Kansas () is a state in the Midwestern United States. Its capital is Topeka, and its largest city is Wichita. Kansas is a landlocked state bordered by Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to the ...
and central Texas
Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...
.
*''Virginia valeriae pulchra'' – mountain earth snake, dorsal scales weakly keeled, mountains of western Pennsylvania
Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
, and adjacent northeastern West Virginia
West Virginia is a state in the Appalachian, Mid-Atlantic and Southeastern regions of the United States.The Census Bureau and the Association of American Geographers classify West Virginia as part of the Southern United States while the Bur ...
and western Maryland
Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...
.
*''Virginia valeriae valeriae'' – eastern earth snake, dorsal scales in 15 rows, New Jersey
New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware ...
to Georgia
Georgia most commonly refers to:
* Georgia (country), a country in the Caucasus region of Eurasia
* Georgia (U.S. state), a state in the Southeast United States
Georgia may also refer to:
Places
Historical states and entities
* Related to the ...
and west through northern Alabama
(We dare defend our rights)
, anthem = "Alabama (state song), Alabama"
, image_map = Alabama in United States.svg
, seat = Montgomery, Alabama, Montgomery
, LargestCity = Huntsville, Alabama, Huntsville
, LargestCounty = Baldwin County, Al ...
, Tennessee
Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to th ...
, and southern Ohio
Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The sta ...
.[ Schmidt KP, Davis DD (1941). ''Field Book of Snakes of the United States and Canada''. New York: G.P. Putnam's Sons. 365 pp. (''Haldea valeriae'', pp. 232-234, Figure 76).]
''Nota bene
(, or ; plural form ) is a Latin phrase meaning "note well".
It is often abbreviated as NB, n.b., or with the ligature
and first appeared in English writing . In Modern English, it is used, particularly in legal papers, to draw the atten ...
'': A trinomial authority in parentheses indicates that the subspecies was originally described in a genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
other than ''Virginia''.
Reproduction
''V. valeriae'' bears live young in August. Brood size is usually fewer than 10. The total length of a newborn is about 6 cm (about 2.5 in).
References
Further reading
* Baird SF, Girard CF (1853). ''Catalogue of North American Reptiles in the Museum of the Smithsonian Institution. Part I.—Serpents.'' Washington, District of Columbia: Smithsonian Institution. xvi + 172 pp. ("''Virginia valeriæ'' ", new species, p. 127).
* Behler JL, King FW (1979). ''The Audubon Society Field Guide to North American Reptiles and Amphibians''. New York: Alfred A. Knopf. 743 pp., 657 color plates. . (''Virginia valeriae'', p. 679 + Plate 467).
* Conant R, Bridges W (1939). ''What Snake Is That? A Field Guide to the Snakes of the United States East of the Rocky Mountains''. (With 108 drawings by Edmond Malnate
Edmond is a given name related to Edmund. Persons named Edmond include:
* Edmond Canaple (1797–1876), French politician
* Edmond Chehade (born 1993), Lebanese footballer
* Edmond Conn (1914–1998), American farmer, businessman, and politici ...
). New York and London: D. Appleton-Century. Frontispiece map + viii + 163 pp. + Plates A-C, 1-32. (''Virginia valeriae'', pp. 112–113 + Plate 21, Figure 62).
* Goin CJ, Goin OB, Zug GR (1978). ''Introduction to Herpetology, Third Edition''. San Francisco: W.H. Freeman and Company. xi + 378 pp. . (Genus ''Virginia'', p. 326).
* Kennicott R (1859). "Notes on ''Coluber calligaster'' of Say
Say may refer to:
Music
*''Say'' (album), 2008 album by J-pop singer Misono
* "Say" (John Mayer song), 2007
*"Say (All I Need)", 2007 song by American pop rock band OneRepublic
* "Say" (Method Man song), 2006 single by rapper Method Man
* "Say" ( ...
, and a description of new species of Serpents in the collection of the North Western University of Evanston, Ill." ''Proc. Acad. Nat. Sci. Philadelphia'' 11: 98-100. (''Virginia elegans'', new species, p. 99).
* McCoy CJ (1980). ''Identification Guide to Pennsylvania Snakes''. (Design and illustrations by Michael Antonoplos). Pittsburgh, Pennsylvania: Carnegie Museum of Natural History
The Carnegie Museum of Natural History (abbreviated as CMNH) is a natural history museum in the Oakland neighborhood of Pittsburgh, Pennsylvania. It was founded by Pittsburgh-based industrialist Andrew Carnegie in 1896.
Housing some 22 millio ...
. 12 pp. (''Virginia valeriae'', p. 4).
* Morris PA (1948). ''Boy's Book of Snakes: How to Recognize and Understand Them''. A volume of the Humanizing Science Series, edited by Jacques Cattell Jaques (Jack) Cattell (2 June 1904 in Garrison, New York – 19 December 1961) was an American publisher and founder of a company bearing his name, "Jaques Cattell Press, Inc.," based in Lancaster, Pennsylvania.
Jaques Cattell Press, Inc. The Sci ...
. New York: Ronald Press. viii + 185 pp. ("The Ground Snake", pp. 73–74, 180).
* Powell R, Conant R, Collins JT (2016). ''Peterson Field Guide to Reptiles and Amphibians of Eastern and Central North America, Fourth Edition''. Boston and New York: Houghton Mifflin Harcourt. xiv + 494 pp., 47 plates, 207 figures. . (''Virginia valeriae'', pp. 412-413 + Plate 44).
* Richmond ND (1954). "The ground snake ''Haldea valeriae'' in Pennsylvania and West Virginia with description of new subspecies". ''Annals of Carnegie Museum'' 33 (15): 251-260. (''Haldea valeriae pulchra'', new subspecies).
* Stejneger L, Barbour T (1917). ''A Check List of North American Amphibians and Reptiles''. Cambridge, Massachusetts: Harvard University Press. 125 pp. (''Virginia valeriae'', p. 99).
External links
Smooth Earth Snake
Reptiles and Amphibians of Iowa.
Savannah River Ecology Laboratory.
{{Taxonbar, from1=Q3014576, from2=Q290763
Natricinae
Fauna of the Eastern United States
Extant Pleistocene first appearances
Reptiles described in 1853
Taxa named by Spencer Fullerton Baird
Taxa named by Charles Frédéric Girard
Reptiles of the United States