IUCN threat status:

Vulnerable (VU)

Conservation Status

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NatureServe Conservation Status

Rounded Global Status Rank: G2 - Imperiled

Reasons: Small range in 4 mountain ranges in Arizona, and at least one in Mexico. Habitats are streams in isolated canyons in arid areas. Substantial habitat has apparently been rendered useless, probably permanently, by exotic crayfish at the best known site and this probably has also happened, or soon will, rangewide. Besides a reduction of total habitat, this will probably confine A. SABINO to a narrower range of elevations than it originally occupied. Apparent variation between even the two known populations in the Santa Catalinas suggests long isolation and possibly small size or severe genetic bottlenecks. Numbers noted as variable from year to year. Probably no gene flow between populations. An apparent historic site about 1500 km away in Mexico, along with a known population in Yacura, plus possibly additional occurrences with further surveys.


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© NatureServe

Source: NatureServe

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