Lost River

Ecosystem Overview

The Lost River ecosystem supports 80 documented wildlife species across 66 taxonomic genera. Located in Custer County, Idaho, this area provides critical habitat with diverse natural communities. The location hosts 17 frequently observed species and 15 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. Compared to nearby Custer County, Lost River hosts 10% more species diversity. This location ranks #39 for species diversity among 100 Custer County County natural areas, placing it in the 61th percentile for biodiversity.

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

#39

Regional Rank

Out of 100 locations

Species Distribution

Very Common17 species

Common24 species

Occasional24 species

Rare15 species

Regional Context

Regional Ranking

#39 of 100 locations

61th percentile for diversity

vs. Custer County

+10% species diversity

Ecosystem Overview

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Biodiversity Highlights

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Species Distribution

Very Common‌

Common‌

Occasional‌

Rare‌

Regional Context

Regional Ranking

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Most Common Species

Showing 20 most frequently observed species out of 80 total documented species.

Bombus huntii

Hunt Bumble Bee

Very Common7.29 obs.

Bombus fervidus

Yellow Bumblebee

Very Common2.64 obs.

Bombus bifarius

Two Form Bumble Bee

Very Common2.58 obs.

Bombus centralis

Central Bumble Bee

Very Common2.44 obs.

Bombus rufocinctus

Red-Belted Bumble Bee

Very Common1.99 obs.

Bombus insularis

Indiscriminate Cuckoo Bumble Bee

Common1.54 obs.

Pinus flexilis

Limber Pine

Common1.43 obs.

Ericameria nauseosa

Rabbitbrush

Common1.17 obs.

No image

Setagrotis radiola

Common0.91 obs.

Juniperus scopulorum

Red-Cedar

Common0.91 obs.

Abagrotis nanalis

Common0.91 obs.

Petrophytum caespitosum

Rock-Spiraea

Occasional0.91 obs.

Agrotis venerabilis

Venerable Dart

Occasional0.91 obs.

Polistes aurifer

Paper Wasp

Occasional0.91 obs.

Pseudanarta crocea

Occasional0.91 obs.

Caradrina montana

Occasional0.91 obs.

Dichagyris variabilis

Occasional0.91 obs.

Euxoa obeliscoides

Obelisk Dart

Rare0.91 obs.

Polia nugatis

Rare0.91 obs.

Crambidia casta

Rare0.91 obs.

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Most Common Species

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Regional Comparison

Regional Ranking

Species Count

+5%

vs. Regional Average

Compared to 8 nearby locations in Custer County County, Idaho

Nearby Natural Areas

Custer County

Importance: 0.80

73 species

+10% vs. current

Cecil D. Andrus-white Clouds Wilderness

Importance: 0.70

80 species

0% vs. current

White Knob Mountains Wilderness Study Area

Importance: 0.70

80 species

0% vs. current

Burnt Creek Wilderness Study Area

Importance: 0.70

80 species

0% vs. current

Borah Peak Wilderness Study Area

Importance: 0.70

80 species

0% vs. current

Jim McClure-jerry Peak Wilderness

Importance: 0.70

78 species

+3% vs. current

Challis

Importance: 0.70

77 species

+4% vs. current

Goldburg Wilderness Study Area

Importance: 0.70

63 species

+27% vs. current

About This Comparison

These comparisons are based on documented wildlife observations from citizen science data. Locations with higher species counts may have more observation activity, different habitat types, or larger coverage areas. Regional rankings help identify biodiversity hotspots and unique natural areas within Custer County County.

Regional Comparison

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Regional Ranking

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Species Count

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vs. Regional Average

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Nearby Natural Areas

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About This Comparison

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Regional Comparison

Regional Ranking

Species Count

+5%

vs. Regional Average

Compared to 8 nearby locations in Custer County County, Idaho

Nearby Natural Areas

Custer County

Importance: 0.80

73 species

+10% vs. current

Cecil D. Andrus-white Clouds Wilderness

Importance: 0.70

80 species

0% vs. current

White Knob Mountains Wilderness Study Area

Importance: 0.70

80 species

0% vs. current

Burnt Creek Wilderness Study Area

Importance: 0.70

80 species

0% vs. current

Borah Peak Wilderness Study Area

Importance: 0.70

80 species

0% vs. current

Jim McClure-jerry Peak Wilderness

Importance: 0.70

78 species

+3% vs. current

Challis

Importance: 0.70

77 species

+4% vs. current

Goldburg Wilderness Study Area

Importance: 0.70

63 species

+27% vs. current

About This Comparison

Most Common Species

Showing 20 most frequently observed species out of 80 total documented species.

Bombus huntii

Hunt Bumble Bee

Very Common7.29 obs.

Bombus fervidus

Yellow Bumblebee

Very Common2.64 obs.

Bombus bifarius

Two Form Bumble Bee

Very Common2.58 obs.

Bombus centralis

Central Bumble Bee

Very Common2.44 obs.

Bombus rufocinctus

Red-Belted Bumble Bee

Very Common1.99 obs.

Bombus insularis

Indiscriminate Cuckoo Bumble Bee

Common1.54 obs.

Pinus flexilis

Limber Pine

Common1.43 obs.

Ericameria nauseosa

Rabbitbrush

Common1.17 obs.

No image

Setagrotis radiola

Common0.91 obs.

Juniperus scopulorum

Red-Cedar

Common0.91 obs.

Abagrotis nanalis

Common0.91 obs.

Petrophytum caespitosum

Rock-Spiraea

Occasional0.91 obs.

Agrotis venerabilis

Venerable Dart

Occasional0.91 obs.

Polistes aurifer

Paper Wasp

Occasional0.91 obs.

Pseudanarta crocea

Occasional0.91 obs.

Caradrina montana

Occasional0.91 obs.

Dichagyris variabilis

Occasional0.91 obs.

Euxoa obeliscoides

Obelisk Dart

Rare0.91 obs.

Polia nugatis

Rare0.91 obs.

Crambidia casta

Rare0.91 obs.

Want the Complete Field Guide?

Get all 80 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.

Premium field guide includes identification tips, seasonal patterns, and professional layout optimized for field use.

Ecosystem Overview

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

#39

Regional Rank

Out of 100 locations

Species Distribution

Very Common17 species

Common24 species

Occasional24 species

Rare15 species

Regional Context

Regional Ranking

#39 of 100 locations

61th percentile for diversity

vs. Custer County

+10% species diversity