Cicindela columbica

endemic to a single nation

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

Global Range: (250-20,000 square km (about 100-8000 square miles)) Formerly known from the Columbia, Snake, and Salmon Rivers in ID, WA and OR. No populations have been found along the Columbia since 1971 or along the lower Snake since the completion of Lower Granite Dam. It still occurs along the Salmon River in ID and may be present along the Snake River in ID.

Systems

• Terrestrial

Comments: "Sandbars and dunes along banks of the Columbia River" (Freitag, 1999). However apparently the species no longer occurs there Knisley and Schultz (1997, p.70).

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: 6 - 20

Comments: Thirteen locations are known along the Salmon River in ID, but they may represent one population (Stephens 2002). None of the several historical populations along the Columbia in WA and OR have been seen since 1976.

Comments: This species probably has a three year life cycle and so larvae are always present in their burrows at any season.

Year Assessed

• Needs updating

Assessor/s

Reviewer/s

History

• 1994
  Endangered
  (Groombridge 1994)
• 1990
  Endangered
  (IUCN 1990)
• 1988
  Endangered
  (IUCN Conservation Monitoring Centre 1988)
• 1986
  Endangered
  (IUCN Conservation Monitoring Centre 1986)
• 1983
  Endangered

United States

Rounded National Status Rank: N2 - Imperiled

Rounded Global Status Rank: G2 - Imperiled

Reasons: Limited remaining range along a single river, with the usual threats for riparian tiger beetles. Extirpated from most of recent range.

Comments: Loss of habitat and disturbances vehicles or excessive foot traffic the main threats at undammed sites. Dams destroy habitat and fragment that which remains, limiting dispersal and recolonization.