endemic to a single state or province

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

Global Range: (<100-250 square km (less than about 40-100 square miles)) See files for D. NITRATOIDES.

Differs from other subspecies in mean values for various external and cranial characters; smaller than other subspecies in length of tail (137.7, 137.4, 148.8, in mm, respectively, for NITRATOIDES, Exilis and BREVINASUS), length of hind foot (34.0, 33.4, 36.0), width of bulla (21.6, 21.7, 22.6), and condylobasal length (29.9, 29.7, 31.4); NITRATOIDES has the least amount of red pigment, BREVINASUS the most (see Best 1991).

Comments: See files for D. NITRATOIDES.

Non-Migrant: Yes. At least some populations of this species do not make significant seasonal migrations. Juvenile dispersal is not considered a migration.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

Comments: See files for D. NITRATOIDES.

See files for D. NITRATOIDES.

See files for D. NITRATOIDES.

United States

Rounded National Status Rank: N1 - Critically Imperiled

Rounded Global Status Rank: T1 - Critically Imperiled

Reasons: Small range in southern California has been much reduced by cultivation.

Global Short Term Trend: Decline of 10-30%

Comments: See files for D. NITRATOIDES.

Degree of Threat: A : Very threatened throughout its range communities directly exploited or their composition and structure irreversibly threatened by man-made forces, including exotic species

Comments: See files for D. NITRATOIDES.

Needs: See files for D. NITRATOIDES.