''Platyceps najadum'', also known commonly as Dahl's whip snake or the slender whip snake, 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 non-venomous

snake Snakes are elongated limbless reptiles of the suborder Serpentes (). Cladistically squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales much like other members of the group. Many species of snakes have s ...

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Colubridae Colubridae (, commonly known as colubrids , from , 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest fossil species of the family date back to the Late Eocene epoch, with earlier origins suspected. C ...

. The species is native to

Eurasia Eurasia ( , ) is a continental area on Earth, comprising all of Europe and Asia. According to some geographers, Physical geography, physiographically, Eurasia is a single supercontinent. The concept of Europe and Asia as distinct continents d ...

. Four

subspecies In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...

are recognized as being valid.

Taxonomy

''P. najadum'' was first described by

Karl Eichwald Karl Eduard von Eichwald known as Karl Eichwald (, ''Eduard Ivanovich Eykhvald''; 4 July 1795, in Mitau, Courland Governorate – 10 November 1876, in Saint Petersburg) was a Baltic German geologist, physician, and naturalist, who lived his whole ...

in 1831, as ''Tyria najadum''.

Geographic range

''P. najadum'' is found in the

Balkans The Balkans ( , ), corresponding partially with the Balkan Peninsula, is a geographical area in southeastern Europe with various geographical and historical definitions. The region takes its name from the Balkan Mountains that stretch throug ...

, Aegean,

Cyprus Cyprus (), officially the Republic of Cyprus, is an island country in the eastern Mediterranean Sea. Situated in West Asia, its cultural identity and geopolitical orientation are overwhelmingly Southeast European. Cyprus is the List of isl ...

, the Mid-East, and as far as

Turkmenistan Turkmenistan is a landlocked country in Central Asia bordered by Kazakhstan to the northwest, Uzbekistan to the north, east and northeast, Afghanistan to the southeast, Iran to the south and southwest and the Caspian Sea to the west. Ash ...

and the

Caucasus Mountains The Caucasus Mountains * * Azerbaijani: , * * * * * * * * * * * is a mountain range at the intersection of Asia and Europe. Stretching between the Black Sea and the Caspian Sea, they are surrounded by the Caucasus region ...

Habitat

''P. najadum'' occurs in dry and

xeric Deserts and xeric shrublands are a biome defined by the World Wide Fund for Nature. Deserts and xeric (Ancient Greek 'dry') shrublands form the largest terrestrial biome, covering 19% of Earth's land surface area. Ecoregions in this habita ...

environments in a wide range of

habitat In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ...

s: in

desert A desert is a landscape where little precipitation occurs and, consequently, living conditions create unique biomes and ecosystems. The lack of vegetation exposes the unprotected surface of the ground to denudation. About one-third of the la ...

and rocky land, in

forest A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, ...

s, woodland scrub, and

agricultural land Agricultural land is typically land ''devoted to'' agriculture, the systematic and controlled use of other organism, forms of lifeparticularly the rearing of livestock and production of cropsto produce food for humans. It is generally synonymous ...

from sea level to altitude. It is commonly found in

fields Fields may refer to: Music *Fields (band), an indie rock band formed in 2006 * Fields (progressive rock band), a progressive rock band formed in 1971 * ''Fields'' (album), an LP by Swedish-based indie rock band Junip (2010) * "Fields", a song by ...

, and seen crushed on roads.

Description

''P. najadum'' has a slim body, and is rarely over a metre (39 inches) in total length (including tail).

Conservation status

''P. najadum'' is threatened by direct persecution, forest fires and intensive agriculture, where its range interacts with human interests. The species is listed on Annex II of the Bern Convention and Annex IV of the European Union

Habitats Directive The Habitats Directive (more formally known as Council Directive 92/43/EEC on the Conservation of natural habitats and of wild fauna and flora) is a directive adopted by the European Community in 1992 as a response to the Berne Convention. The ...

. It has varying protection in some countries including

Serbia , image_flag = Flag of Serbia.svg , national_motto = , image_coat = Coat of arms of Serbia.svg , national_anthem = () , image_map = , map_caption = Location of Serbia (gree ...

Montenegro , image_flag = Flag of Montenegro.svg , image_coat = Coat of arms of Montenegro.svg , coa_size = 80 , national_motto = , national_anthem = () , image_map = Europe-Mont ...

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

, and

Lebanon Lebanon, officially the Republic of Lebanon, is a country in the Levant region of West Asia. Situated at the crossroads of the Mediterranean Basin and the Arabian Peninsula, it is bordered by Syria to the north and east, Israel to the south ...

Reproduction

''P. najadum'' is an

egg An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the ...

laying species. Females lay between 3 and 16 eggs in a

clutch A clutch is a mechanical device that allows an output shaft to be disconnected from a rotating input shaft. The clutch's input shaft is typically attached to a motor, while the clutch's output shaft is connected to the mechanism that does th ...

Subspecies

Four"''Platyceps najadum'' ". The Reptile Database. http://reptile-database.reptarium.cz/species?genus=Platyceps&species=najadum&search_param=%28%28search%3D%27Platyceps+najadum%27%29%29 subspecies are identified, including the

nominotypical subspecies In biological classification, subspecies (: 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. ...

. *''Platyceps najadum albitemporalis'' *''Platyceps najadum dahlii'' – Balkans, Cyprus, Aegean Turkey *''Platyceps najadum kalymnensis'' –

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

Kalymnos Kalymnos (; ) is a Greek island and municipality in the southeastern Aegean Sea. It belongs to the Dodecanese island chain, between the islands of Kos (south, at a distance of ) and Leros (north, at a distance of less than ): the latter is lin ...

island, the Aegean *''Platyceps najadum najadum'' – Caucasus and

Asia Minor Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...

A trinomial authority in parentheses indicates that the subspecies was originally described in a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

other than ''

Platyceps ''Platyceps'' is a genus of snakes of the Family (biology), family Colubridae endemic to Eurasia. Taxonomy The genus was erected in 1860 by Edward Blyth, allying species previously described. The genus name ''Platyceps'' was inadvertently use ...

''.

Etymology

Both the

subspecific name In biology, trinomial nomenclature is the system of names for taxa below the rank of species. These names have three parts. The usage is different in zoology and botany. In zoology In zoological nomenclature, a trinomen (), trinominal name, or ...

, ''dahlii'', and the common name, Dahl's whip snake, are in honor of Austrian

entomologist Entomology (from Ancient Greek ἔντομον (''éntomon''), meaning "insect", and -logy from λόγος (''lógos''), meaning "study") is the branch of zoology that focuses on insects. Those who study entomology are known as entomologists. In ...

Georg Dahl Georg may refer to: * ''Georg'' (film), 1997 *Georg (musical), Estonian musical * Georg (given name) * Georg (surname) * , a Kriegsmarine coastal tanker * Spiders Georg, an Internet meme See also * George (disambiguation) George may refer to: ...

(1769–1831) who collected the type specimen in Dalmatia in 1824.''Biographisches Lexikon des Kaiserthums Oesterreich'' … volume 3. pages 129-130. 1858. The subspecific name, ''schmidtleri'', is in honor of German

herpetologist Herpetology (from Ancient Greek ἑρπετόν ''herpetón'', meaning "reptile" or "creeping animal") is a branch of zoology concerned with the study of amphibians (including frogs, salamanders, and caecilians (Gymnophiona)) and reptiles (in ...

Josef Friedrich Schmidtler (born 1942). Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . (''Platyceps najadum dahlii'', p. 64; ''P. n. schmidtleri'', p. 236).

Indigenous names

Σαϊτα (

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

), Saita, Стрелушка ( Bulgarian), šilac ( Croatian), Za'aman Z'eitani (

Hebrew Hebrew (; ''ʿÎbrit'') is a Northwest Semitic languages, Northwest Semitic language within the Afroasiatic languages, Afroasiatic language family. A regional dialect of the Canaanite languages, it was natively spoken by the Israelites and ...

), Ok Yılanı (

Turkish Turkish may refer to: * Something related to Turkey ** Turkish language *** Turkish alphabet ** Turkish people, a Turkic ethnic group and nation *** Turkish citizen, a citizen of Turkey *** Turkish communities in the former Ottoman Empire * The w ...

References

External links

* Snakes of Europe, ''Platyceps najadum''. {{Taxonbar, from=Q901168 najadum Snakes of Asia Reptiles of Europe Reptiles of Central Asia Fauna of West Asia Fauna of the Balkans Fauna of the Middle East Fauna of Cyprus Taxa named by Karl Eichwald Reptiles described in 1831 Reptiles of Cyprus