| Vipera aspis | 
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| Scientific classification | 
| Domain: | Eukaryota | 
 
| Kingdom: | Animalia | 
 
| Phylum: | Chordata | 
 
| Class: | Reptilia | 
 
| Order: | Squamata | 
 
| Suborder: | Serpentes | 
 
| Family: | Viperidae | 
 
| Genus: | Vipera | 
| Species: | V. aspis | 
| Binomial name | 
| Vipera aspis 
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| Synonyms | 
| [Coluber] aspis Linnaeus, 1758Vipera Francisci Redi Laurenti, 1768
Vipera Mosis Charas Laurenti, 1768Vipera vulgaris Latreille in Sonnini & Latreille, 1801
Vipera ocellata Latreille in Sonnini & Latreille, 1801
Coluber Charasii — Shaw, 1802[Vipera (Echidna)] Aspis — Merrem, 1820
C[hersea]. vulgaris — Fleming, 1822Vipera aspis — Metaxa, 1823Aspis ocellata — Fitzinger, 1826[Pelias] Col[uber]. aspis — F. Boie, 1827
Berus Vulgaris — Gray, 1831Vipera aspis var. ocellata — Bonaparte, 1834
Vipera aspis var. ocellata — Massalongo, 1853
V[ipera]. (Vipera) aspis — Jan, 1863
Vipera berus subspec. aspis — Camerano, 1888
Vipera aspis — Boulenger, 1896Vipera aspis var. lineata Düringen, 1897
[Vipera aspis] var. Delalande Phisalix, 1902Vipera aspis aspis — Mertens, 1925
Mesovipera aspis — A.F.T. Reuss, 1927
Mesovipera maculata A.F.T. Reuss, 1930 (nomen nudum)
Mesovipera maculata aspis — A.F.T. Reuss, 1930 (nomen nudum)
Vipera ammodytes aspis — Schwarz, 1936
Vipera aspis delalande — M. Phisalix, 1968
Vipera (Rhinaspis) aspis aspis — Obst, 1983
Vipera aspis — Golay et al., 1993
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Vipera aspis is a viper species found in southwestern Europe. 
Its common names include asp, asp viper, European asp, and aspic viper, among others. Like all other vipers, it is venomous. Bites from this species can be more severe than from the European adder, V. berus; not only can they be very painful, but approximately 4% of all untreated bites are fatal. The specific epithet, aspis, is a Greek word that means "viper." Five subspecies are currently recognized, including the nominate subspecies described here.