Upper California; error = Bahia, Brazil.
The results of a recent genetic study#R suggest that this species is more closely related to S. magellanicus than to S. spinescens, with which it has traditionally been grouped, but the sample of S. yarrellii involved a single captive individual. Monotypic.
NE Brazil (Piauí, Rio Grande do Norte, Pernambuco and Alagoas S to NC Bahia; formerly widespread). Introduced to N Venezuela (Carabobo); recorded once in Colombia#R.
Food and feeding
Status and conservation
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