Yoraperla mariana

Global Range: (200,000-2,500,000 square km (about 80,000-1,000,000 square miles)) It occurs in the Coastal, Cascade, and Sierra Nevada Mountans of the Pacific Northwest into British Columbia (Stewart and Oswood, 2006).

occurs (regularly, as a native taxon) in multiple nations

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

Habitat Type: Freshwater

Comments: It is found in small creeks (Gaufin et al., 1972).

Non-Migrant: No. All populations of this species make significant seasonal migrations.

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.

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 81 - 300

Comments: Gaufin et al. (1972) cite Montana distribution as Flathead and Gallatin Cos. It has been documented at several sites in Mount Rainier National Park, Washington (Kondratieff and Lechleitner, 2002).

Adults emerge from May to July in Montana (Gaufin et al., 1972).

Canada

Rounded National Status Rank: N3 - Vulnerable

United States

Rounded National Status Rank: N4 - Apparently Secure

Rounded Global Status Rank: G4 - Apparently Secure

Reasons: It occurs i the Coastal, Cascade, and Sierra Nevada Mountans if the Pacific Northwest into British Columbia .