Species Evaluations & Rationales - Arthropods
Species occurrence on National Forest System units as portrayed by these tables is based on limited information available to evaluators at the time of preparation of species evaluations. Because these evaluations were intended to be sketches and not exhaustive, and because distribution information for many species is inadequate, the accuracy of these location tables cannot be ensured. Therefore, users must assume the responsibility of verifying that this information is accurate for individual forests.
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The current Regional Forester sensitive arthropods and their evaluations are on the "Sensitive Species List" page. |
Alberta arctic Oeneis alberta |
Evaluation | Rationale |
Atlantis fritillary Speyeria atlantis |
Evaluation | Rationale |
Broad-winged skipper Poanes viator |
Evaluation | Rationale |
Dusted skipper Arytonopsis hianna |
Evaluation #1 | Evaluation #2 | Rationale |
Iowa skipper Atrytone arogos iowa |
Evaluation | Rationale |
Schryver's elfin Callophrys mossii schryveri |
Evaluation | Rationale |
Tawny crescent Phyciodes batesii |
Evaluation #1 | Evaluation #2 | Rationale |
Wiest's sphinx moth Euproserpinus wiesti |
Evaluation | Rationale |
Barren's dagger moth Acronicta albarufa |
Evaluation | Rationale |
Buckmoth* Hemileuca grotei diana |
Evaluation | Rationale |
Circus beetle Eleodes hirtipennis |
Evaluation | Rationale |
Dakota skipper Hesperia dacotae |
Evaluation | Rationale |
Dark blue Lycaeides idas sublivens |
Evaluation | Rationale |
Giant silkmoth* Agapema homogena |
Evaluation | Rationale |
Mottled duskywing Erynnis martialis |
Evaluation | Rationale |
Mulberry wing Poanes massasoit |
Evaluation | Rationale |
Rhesus skipper Polites rhesus |
Evaluation | Rationale |
Rita dotted-blue Euphilotes rita coloradensis |
Evaluation | Rationale |
Rocky Mountain jutta artic Oeneis jutta reducta |
Evaluation | Rationale |
Snow's skipper Paratrytone snowi |
Evaluation | Rationale |
Sphinx moth* Sphinx dollii |
Evaluation | Rationale |
Stevens' tortricid moth Decodes stevensi |
Evaluation | Rationale |
Tiger beetle* Amblycheila cylindriformis |
Evaluation | Rationale |
Tiger beetle* Cicindela nebraskana |
Evaluation | Rationale |
*No common name |
Belfragi's chlorochroan bug Chlorochroa belfragii |
Evaluation | Rationale |
Cave obligate springtail* Entomobrya troglodytes |
Evaluation | Rationale |
Lost ethmiid moth Ethmia monachella |
Evaluation | Rationale |
Mountain checkered-skipper Pyrgus xanthus |
Evaluation | Rationale |
Narrow-foot diving beetle Hygrotus diversipes |
Evaluation | Rationale |
Spalding's blue Euphilotes spaldingi |
Evaluation | Rationale |
*No common name |
Arapahoe snowfly (Capnia arapahoe) - Removed by Regional Forester in March 2021 based on new genetics analysis indicating it is a hybrid of two more common stoneflies along the Colorado Front Range and not a distinct species or subspecies, as previously thought. |