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Heloderma horridum (WIEGMANN, 1829)

IUCN Red List - Heloderma horridum - Least Concern, LC
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Higher TaxaHelodermatidae, Platynota, Anguimorpha, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Mexican Beaded Lizard
G: Skorpions-Krustenechse
S: Escorpión 
SynonymTrachyderma horridum WIEGMANN 1829: 421
Heloderma horridum — WIEGMANN 1829
Heloderma hernandesii WIEGMANN 1834
Heloderma horridum — DUMÉRIL & BIBRON 1836: 499
Heloderma horridum — SUMICHRAST 1864: 497
Heloderma horridum — BOULENGER 1885: 301
Heloderma horridum — SMITH & TAYLOR 1950: 193
Heloderma horridum — WERMUTH 1963: 1
Heloderma horridum horridum — HARDY 1969: 152
Heloderma horridum — STEBBINS 1985: 169
Heloderma horridum — LINER 1994
Heloderma horridum — KÖHLER 2000: 51
Heloderma horridum — REISERER et al. 2013
Heloderma horridum — MATA-SILVA et al. 2015
Heloderma horridum — SCHUETT & REISERER 2017 
DistributionMexico (Sinaloa, Nayarit, Jalisco, Colima, Michoacan, Guerrero, Morelos, W Puebla, Oaxaca, Chiapas, Durango)

Type locality: Mexico; restricted to Cuernavaca, Morelos, Mexico (BOGERT & MARTIN DEL CAMPO 1956). TAYLOR (1969) stated that the type was collected at “Tehuantepec”.  
Reproductionoviparous 
TypesHolotype: ZMB 483 
DiagnosisDiagnosis: Bogert & Martin del Campo 1956: 21 
CommentVenomous!

Subspecies: all previous subspecies have been elevated to full species status by Reiserer et al. 2013.

Type species: Trachyderma horridum WIEGMANN 1829 is the type species of the genus Heloderma WIEGMANN 1829 and of the family Helodermatidae.

Distribution: for a map see Reiserer et al. 2013: Fig. 7. 
EtymologyApparently named after the venomous bite of this species (and its relatives) which is unique among lizards.

The genus was named after Greek derma = skin, and Greek helos = nail, stud, for the pearly scalation of the species. The genus name is feminine (as all genus names ending in -derma, Böhme & Denzer 2019). 
References
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