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and dark postorbital bar. No distinct pattern is found on the crown or neck areas. The tail may be gray, with darker bands, or almost uniform in color without any distinct markings. The belly is white or cream-colored. The young are mostly red, but adults eventually become an olive green. Within its
420:
is one of the largest rattlesnake species. Specimens exceeding 150 cm (4.9 ft) are not uncommon, while the maximum size reported is 204.5 cm (6.71 ft) (Klauber, 1972). The body is moderately stout and rather rectangular in cross section. Female rattlesnakes of the species are
538:(v3.1, 2001). Species are listed as such due to their wide distribution, presumed large population, or because they are unlikely to be declining fast enough to qualify for listing in a more threatened category. The trend for this species was stable when assessed in 2007.
550:
is primarily active during the rainy summer months, and most specimens are found crossing the roads at night. However, a few have been seen basking early in the morning. It has been reported to tame quickly in captivity.
513:
is (or was at one point) particularly plentiful, the area has been described as mostly treeless and covered with short grass with scattered clumps of mesquite, acacias, and other thorny bushes, as well as plenty of large
439:
The color pattern consists of brown or grayish ground color overlaid with 26-41 dark, rhombus-shaped (diamond) blotches with light edges. The head is a uniform grayish-brown except for its lighter
1350:
1267:
1306:
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630:, produces an antivenin called "Crotalidae Polyvalent Immune Fab (Ovine)" containing a paraspecific antibody that protects against bites from this snake.
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457:, where the two appear to hybridize freely. While these two species are easily distinguished, identifying the hybrid specimens is problematic.
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Loc Barragán, Jesús & Carbajal Márquez, Rubén & Woolrich-Piña, Guillermo & Navarro-Orozco, Roy. (2016).
469:
include
Mexican west coast rattlesnake, Mexican green rattler, Mexican west coast green rattlesnake, and in Spanish
582:
is known to produce large amounts of highly toxic venom, and large specimens should be regarded as very dangerous.
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mature at a minimum length of 100 cm (3.3 ft) and a weight of 700 g (1.5 lb).
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672:, 1940), found in northeastern Mexico. It was more commonly considered to be a subspecies of
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850:. Second Edition. First published in 1956, 1972. Berkeley: University of California Press.
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Brown (1973) mentioned an average venom yield of 297 mg (dried venom), as well as
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is mostly tropical thorn forest, with an extension into tropical deciduous forest.
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and Lamar. Occasionally, one may also encounter references to another subspecies,
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In some populations, the venom may contain a component structurally related to
639:
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1010:. Ithaca and London: Comstock Publishing Associates. 870 pp., 1,500 plates.
813:. Ithaca and London: Comstock Publishing Associates. 870 pp., 1,500 plates.
612:
353:
346:
88:
1207:
769:
Snake
Species of the World: A Taxonomic and Geographic Reference, Volume 1
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range, this is the only rattlesnake with diamond-shaped dorsal markings.
357:
158:
128:
108:
1108:
678:, until it was elevated to a full species by Campbell and Lamar (2004):
1246:
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is produced by the
Instituto Nacional de Higiene in Mexico. In the US,
406:
342:
118:
848:
Rattlesnakes: Their
Habitats, Life Histories, and Influence on Mankind
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381:
361:
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771:. Washington, District of Columbia: Herpetologists' League. 511 pp.
982:. Springfield, Illinois: Charles C. Thomas. 184 pp. LCCCN 73-229.
448:
397:
148:
138:
1081:(1864). "Contributions to the Herpetology of Tropical America".
386:), and alludes to this snake's large size and potent venom. No
1233:
1143:
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Norris R (2004). "Venom
Poisoning in North American Reptiles".
701:
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911:. New York: US Government / Dover Publications Inc. 203 pp.
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493:, where it is mostly restricted to the coastal plain. The
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Klauber reported that the stomachs of seven specimens of
930:
Crotalus basiliscus. Arboreal habitat use/ Litter size
1152:
1008:The Venomous Reptiles of the Western Hemisphere
811:The Venomous Reptiles of the Western Hemisphere
650:. In that year, the latter was transferred to
1134:Max Planck Institute for Demographic Research
943:Living Snakes of the World in Color. New York
8:
963:2001 Categories & Criteria (version 3.1)
731:10.2305/IUCN.UK.2007.RLTS.T64312A12763909.en
706:Ponce-Campos, P.; García Aguayo, A. (2007).
805:
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485:, is found in western Mexico from southern
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424:At midbody, 25-29 rows of strongly keeled
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932:.. Mesoamerican Herpetology. 3. 494-496.
1055:Integrated Taxonomic Information System
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534:is classified as Least Concern on the
7:
1374:IUCN Red List least concern species
717:IUCN Red List of Threatened Species
364:. Like all other pit vipers, it is
1083:Proc. Acad. Nat. Sci. Philadelphia
451:often occurs in the same areas as
14:
1384:Taxa named by Edward Drinker Cope
338:
75:
945:: Sterling Publishers. 480 pp.
1129:Crotalus basiliscus basiliscus
1006:Campbell JA, Lamar WW (2004).
809:Campbell JA, Lamar WW (2004).
331:Mexican west coast rattlesnake
307:Crotalus basiliscus basiliscus
1:
1109:Reptarium.cz Reptile Database
969:. Accessed 13 September 2007.
909:Poisonous Snakes of the World
1092:, new species, p. 166).
596:and 4.0 and 12.9 mg/kg
567:hair, probably belonging to
382:
1136:. Accessed 4 February 2007.
1123:. Accessed 4 February 2007.
1036:. Accessed 4 February 2007.
907:United States Navy (1991).
380:word for king, βασιλισκος (
1405:
1389:Reptiles described in 1864
607:. The venom also contains
592:values of 11.1 mg/kg
390:are currently recognized.
1111:. Accessed 9 August 2007.
222:
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72:Scientific classification
70:
48:
39:
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471:cascabel verde mexicana
432:number 174-206 and the
407:Wilmington Serpentarium
1121:Biodiversity of Mexico
1034:Munich AntiVenom INdex
414:
376:, is derived from the
1127:Longevity record for
724:: e.T64312A12763909.
509:Around Colima, where
401:
335:Mexican green rattler
941:Mehrtens JM (1987).
871:Crotalus basiliscus
628:Brentwood, Tennessee
1198:Crotalus_basiliscus
1184:Crotalus basiliscus
1154:Crotalus basiliscus
1116:Crotalus basiliscus
1104:Crotalus basiliscus
1090:Caudisona basilisca
1049:Crotalus totonacus
1029:Crotalus basiliscus
710:Crotalus basiliscus
526:Conservation status
326:Crotalus basiliscus
281:Crotalus terrificus
226:Caudisona basilisca
191:Crotalus basiliscus
42:Conservation status
25:Crotalus basiliscus
767:, Touré T (1999).
681:Crotalus totonacus
622:2007-02-19 at the
580:Crotalus basilicus
415:
173:C. basiliscus
16:Species of reptile
1361:
1360:
1333:Open Tree of Life
1146:Taxon identifiers
978:Brown JH (1973).
642:were recognized:
638:Before 1989, two
546:In the lowlands,
518:. The habitat of
465:Common names for
356:. The species is
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477:Geographic range
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951:0-8069-6460-X
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536:IUCN Red List
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532:C. basiliscus
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520:C. basiliscus
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511:C. basiliscus
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495:type locality
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483:C. basiliscus
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467:C. basiliscus
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418:C. basiliscus
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403:C. basiliscus
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1088:: 166-181. (
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761:McDiarmid RW
735:. Retrieved
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605:Mojave toxin
602:
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530:The species
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461:Common names
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1255:iNaturalist
1178:Wikispecies
765:Campbell JA
737:11 November
675:C. durissus
653:C. molossus
501:, Mexico".
454:C. molossus
428:occur. The
394:Description
360:to western
339:other names
1368:Categories
1351:basiliscus
882:4 February
844:Klauber LM
779:(series).
688:References
640:subspecies
617:Protherics
563:contained
434:subcaudals
388:subspecies
383:basiliskos
374:basiliscus
294:basiliscus
268:basiliscus
242:basiliscus
135:Suborder:
1060:27 August
787:(volume).
613:Antivenin
609:proteases
491:Michoacán
354:Viperidae
347:pit viper
287:Boulenger
167:Species:
149:Viperidae
139:Serpentes
95:Kingdom:
89:Eukaryota
1379:Crotalus
1273:10952281
1205:BioLib:
1163:Wikidata
846:(1997).
670:Kauffeld
658:Campbell
634:Taxonomy
620:Archived
542:Behavior
366:venomous
217:Synonyms
160:Crotalus
145:Family:
129:Squamata
119:Reptilia
109:Chordata
105:Phylum:
99:Animalia
85:Domain:
62:IUCN 3.1
1247:2444435
1169:Q810157
1107:at the
1079:Cope ED
965:at the
569:rodents
555:Feeding
505:Habitat
436:18-36.
358:endemic
349:in the
343:species
341:, is a
260:Wheeler
201:, 1864)
155:Genus:
125:Order:
115:Class:
60: (
1338:894585
1286:585822
1234:815841
1208:183823
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986:
949:
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668:&
565:mammal
499:Colima
487:Sonora
368:. The
362:Mexico
351:family
315:, 1948
302:, 1929
300:Amaral
289:, 1896
276:, 1884
274:Garman
262:, 1875
254:Yarrow
233:, 1864
1325:98399
1299:64312
1268:IRMNG
1260:73724
666:Gloyd
575:Venom
516:cacti
449:snake
447:This
378:Greek
313:Gloyd
266:var.
1312:8744
1307:NCBI
1294:IUCN
1281:ITIS
1242:GBIF
1221:ZPB2
1062:2007
1012:ISBN
984:ISBN
947:ISBN
913:ISBN
884:2007
852:ISBN
815:ISBN
781:ISBN
773:ISBN
739:2021
722:2007
646:and
248:Cope
231:Cope
199:Cope
1229:EoL
1216:CoL
1193:ADW
1132:at
1119:at
1032:at
726:doi
656:by
626:in
489:to
409:in
405:at
345:of
1370::
1348::
1346:RD
1335::
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1086:16
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1002:In
892:^
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826:^
792:^
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696:^
684:.
611:.
600:.
598:IP
594:IV
589:50
587:LD
571:.
473:.
372:,
333:,
311:—
298:—
285:—
272:—
257:in
251:in
246:—
240:.
1064:.
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1004::
990:.
953:.
919:.
886:.
873:"
869:"
858:.
821:.
741:.
728::
712:"
708:"
664:(
238:C
197:(
64:)
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