IUCN threat status:

Least Concern (LC)

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Notes

Syntypes: MNHNP (3 specimens). MNHNP 4620 selected as lectotype by Schmidt, 1933, Field Mus. Nat. Hist. Publ., Zool. Ser. 20:29-40[39]; this number is given as E337/3 by Roze, 1967, Am. Mus. Novit, (2287):1-60[14].

Type-locality: Mexico; restricted to Colima, Mexico, by Schmidt, 1933:[39], who thought M. diastema represented a species from western Mexico. This apparent mistake was discussed by Zweifel, 1959, Am Mus. Novit, (2287):1-60[14].

Seven subspecies were recognized by Roze, 1983 [dated 1982], Mem. Inst. Butantan 46:305-338[319-320], and Campbell and Lamar, 1989, Venom. Rept. Latin America: 425pp. These subspecies are M. d. aglaeope (Cope, 1860); M. d. alienus (Werner, 1903); M. d. apiatus (Jan, 1858); M. d. macdougalli Roze, 1967; and M. d. sapperi (Werner, 1903). The species was reviewed by Fraser, 1973, Copeia 1973:1-17, who suggested that subspecies were undiagnosable, owning to discordant geographic variation.

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© Mohammadi, Shabnam

Source: Snake Species of the World

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