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Crotalus t. terrificus, cascavella
From Latin crotalum = rattle
Gr. krotalon a rattle == ref. rattle on tail, typical of all but one member of genus
English: Brasilian Rattlesnake
German: Brasilianische Klapperschlange, Schreckens-Klapperschlange
Trituration of the venom.
Animalia; Chordata / Vertebrata - Vertebrates; Reptilia - Reptiles; Serpentes - Snakes; Crotalidae
(some information from Mitchell A. Fleisher)
Introduced by Mure, in Pathogenesie Brasilienne, ~1845; one prover (of the venom), and review of the effects of a bite on the finger on one subject (the latter from Maia & Reis, Gaz. de Paris, Jan. 5th, 1839). In TF Allen's Encylopedia. Allen includes as well, in separate entry, the toxicologic report of SB Higgins (1873) of a bite on the finger.
A contemporary proving (April 1995) is published in Rajan Sankaran's book Provings; involving twelve provers of one dose each of the 30C potency.
Description of the substance
The genus Crotalus consists of 26 described species, 24 of which have geographic ranges centered in Mexico, with the Mexican plateau and fringing mountains possessing the greatest diversity of the genus.
C.durissus is the only specie of rattlesnake with range extending south of Mexico.
This specie is widely distributed throughout Central and South America, from southern Mexico and Belize through Brazil and northern Argentina. This is the most widely-distributed of the rattlesnakes, with many disjunct populations throughout its range. Generally found in semi-arid regions, including dry tropical forest, tropical deciduous forest, pine-oak forest, arid tropical scrub, grasslands, thorn woodland, and (rarely) natural breaks in cloud forest; rarely encountered in dense forest, and largely absent from rainforest.
Considerable geographic variation is seen, and up to 14 subspecies have been described.
C.durissus is one of the largest species of the rattlesnakes, commonly exceeding 1m in length, with large males occasionally encountered to 1.6m (5.25').
C.durissus exhibits a spectacular defensive display, with a tight coil, with the head and anterior third of the body lifted high off the ground, neck bent like a shepherd's crook, facing its antagonist. C.durissus is responsible for 10-20% of venomous snake bites in South America.
Diffuso dal Messico meridionale fino alle Ande.
Lungo al massimo 1,80 m. si distingue dalle altre specie nettamente perché ha la zona vertebrale assai rilevata in modo che il suo corpo si presenta con una sezione triangolare a base larga.
La testa è piccola e la coda più lunga che negli altri serpenti della sua specie.
La tinta di fondo è giallo vivo o verdastra con losanghe rosso-brune circondate di bianco.
Nei vecchi esemplari la macchiatura è assente.
E' estremamente irritabile e morde senza la minima provocazione.