Perlomyia collaris

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

Global Range: (20,000-200,000 square km (about 8000-80,000 square miles)) It occurs in California, Oregon, Washington, Idaho, British Columbia, and the Yukon; in the Coastal, Cascade, and Rocky Mountains (Stewart and Oswood, 2006).

Habitat Type: Freshwater

Comments: It occurs in creeks and rivers of the Pacific northwest (Baumann et al., 1977). The common habitat are springs and rheocrenes, habitats.

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: 21 - 80

Comments: In California, Jewett (1960) cites Marin, Santa Clara, Shasta, Sonoma, and Stanislaus Cos. Stark et al. (2008) documented it in Modoc Co., California in Thomas Creek, Mill Creek and Lassen Creek. In Idaho, it is reported from one site, Cottonwood Creek, Nez Perce Co. It has been documented in Huckleberry Creek Bridge, South Mowich River Damp, North Mowich River, Mountain Meadow Stream at Paul Peak Trail, seeps by Nisqualla River Bridge, Eagle Peak Creek at Nisqually River, seeps into White River, and Ipsut Falls at Ipsut Creek in Mount Rainier National Park, Washington (Kondratieff and Lechleitner, 2002). Stewart and Oswood (2006) cite unconfirmed collection records for British Columbia (Chilliwack River at Vedder Crossing), Yukon (North Fork crossing at Dempster Highway), and Alaska (Monument Creek at Chena Hot Springs).

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1

Canada

Rounded National Status Rank: N3 - Vulnerable

United States

Rounded National Status Rank: N3 - Vulnerable

Rounded Global Status Rank: G3 - Vulnerable

Reasons: Known from >30 occurrences throughout the Coast, Cascade and Rocky Mountains. This species is more common in the Pacific Northwest. The common habitat are springs and rheocrenes, habitats threatened by logging, over grazing and water development.

Comments: Specific threats to Idaho populations of Perlomyia collaris have not been identified. In general, stonefly populations are affected by changes to aquatic habitat such as alteration of flow patterns, streambed substrate, thermal characteristics, and water quality. Alteration and degredation of aquatic habitat is the primary concern for Idaho populations (Stagliano et al., 2007).