Chlosyne acastus - (W. H. Edwards, 1874) (1870)
Sagebrush Checkerspot
Other English Common Names: Acastus Checkerspot
Synonym(s): Charidryas acastus
Taxonomic Status: Accepted
Related ITIS Name(s): Chlosyne acastus (W. H. Edwards, 1874) (TSN 778076)
French Common Names: damier des prairies
Unique Identifier: ELEMENT_GLOBAL.2.108207
Element Code: IILEPJ9170
Informal Taxonomy: Animals, Invertebrates - Insects - Butterflies and Moths - Butterflies and Skippers
 
Kingdom Phylum Class Order Family Genus
Animalia Mandibulata Insecta Lepidoptera Nymphalidae Chlosyne
Genus Size: D - Medium to large genus (21+ species)
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Concept Reference
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Concept Reference: Opler, P. A., and A. D. Warren. 2002. Butterflies of North America. 2. Scientific Names List for Butterfly Species of North America, north of Mexico. C.P. Gillette Museum of Arthropod Diversity, Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, Colorado. 79 pp.
Concept Reference Code: B02OPL01EHUS
Name Used in Concept Reference: Chlosyne acastus
Taxonomic Comments: Some workers including Scott (1986, p. 306) consider this a subspecies.
Conservation Status
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NatureServe Status

Global Status: G4G5
Global Status Last Reviewed: 30Sep1998
Global Status Last Changed: 30Sep1998
Rounded Global Status: G4 - Apparently Secure
Reasons: Uncommon in limited range (mainly in Saskatchewan).
Nation: United States
National Status: N4N5 (30Sep1998)
Nation: Canada
National Status: N4N5 (23Aug2017)

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Arizona (S5), California (SNR), Colorado (S4S5), Idaho (S4), Montana (S4), Nebraska (S1), Nevada (S1), New Mexico (SNR), North Dakota (SNR), Oregon (SNR), South Dakota (SNR), Utah (SNR), Washington (S4), Wyoming (SNR)
Canada Alberta (S2), Saskatchewan (S3)

Other Statuses

NatureServe Global Conservation Status Factors

Other NatureServe Conservation Status Information

Distribution
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U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map
Endemism: occurs (regularly, as a native taxon) in multiple nations

U.S. & Canada State/Province Distribution
United States AZ, CA, CO, ID, MT, ND, NE, NM, NV, OR, SD, UT, WA, WY
Canada AB, SK

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
NE Sioux (31165)
NV Clark (32003), Nye (32023)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
10 Hat (10120108)+
15 Las Vegas Wash (15010015)+
16 Sand Spring-Tikaboo Valleys (16060014)+, Ivanpah-Pahrump Valleys (16060015)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Habitat Type: Terrestrial
Non-Migrant: N
Locally Migrant: N
Long Distance Migrant: N
Palustrine Habitat(s): Riparian
Terrestrial Habitat(s): Shrubland/chaparral, Woodland - Conifer, Woodland - Hardwood, Woodland - Mixed
Habitat Comments: Sagebrush, less often other dry shrublands or woodlands often stream beds, dry washes.
Adult Food Habits: Nectarivore
Food Comments: Caterpillar Hosts: Rabbitbrush (Chrysothamnus viscidiflorus) and tansy-aster (Machaeranthera) in the sunflower family (Asteraceae). Adult Food: Flower nectar (Lotts and Naberhaus 2017).
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation
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Group Name: Small or Localized Nymphalids

Use Class: Not applicable
Minimum Criteria for an Occurrence: A location where a population occurs, or has occurred, where there is potential for persistence or continued recurrence. Minimally a place where the species has been verified where there is adequate larval foodplant, nectar and overall habitat to sustain a population. Repeated occurrences of adults out of habitat on flowers, e.g. in gardens are not occurrences. Verification standards vary with species. For all a collected specimen is preferable except with taxa for which this would be illegal. Good photographs will always, almost always, or sometimes suffice depending on species and locality. Photographs are much more likely to suffice if both the upper and underside are clearly shown.
Mapping Guidance: In general larval foodplants, but sometimes also nectar plants, are the main basis for EOs. These plus general habitat features can be used as boundaries. With metapopulations the separate demes often should be mapped. Consult habitat and foodplant comments fields for species-specific information on what constitutes suitable habitat when mapping occurrences for individual species.
Separation Barriers: Minimal data and probably vary with species. Usually not relevant.
Separation Distance for Unsuitable Habitat: 2 km
Separation Distance for Suitable Habitat: 10 km
Alternate Separation Procedure: Multiple colonies within an overall community matrix such as openings within pine barrens or savannas, or foodplant patches within a wetland complex, prairie remnant, canyon or along a stream should generally be treated as one metapopulation occurrence by using the suitable habitat distance, especially if the foodplant occurs to some degree between the colonies.
Separation Justification: There are few good data for most species, but some of the California Euphydryas taxa have been intensively studied by Paul Ehrlich and others as have some comparable European species. These data and many casual observations all suggest metapopulation structures are common and that females sometimes leave colonies and disperse for kilometers even into and through urban areas and even rarely between low peaks. An extreme example might be Euphydryas phaeton around New Haven Connecticut at least into the 1980s (before Plantago was adopted as a primary foodplant). Valley marsh Chelone feeding populations would sporadically colonize ridgetops and produce colonies on Aureolaria. These colonies usually did not persist more than a year or two but periodically reappeared. At the same time wetland colonies sometimes were wiped out when population explosions caused larval starvation, but such places got recolonized within a few years (observations of D. Schweitzer and others). Chlossyne harrisii also is subject to frequent extirpation and recolonization at least southward. Gatrelle and others report that even the highly restricted Phyciodes batesii maconensis moves along forest roads. Within most of its range P. tharos will reliably find virtually every patch of suitable asters, even colonizing single large plants left in lawns.
It appears then that populations within a few kilometers will usually be somewhat connected. As with most Lepidoptera, contiguous suitable habitat is rarely only partially occupied. If the species occurs at all, all such habitat should be assumed occupied at least some of the time. However, for practical considerations observations more than 10 kilometers apart should be considered separate pending more information. Both distances are arbitrary but seem consistent with what is known.

Inferred Minimum Extent of Habitat Use (when actual extent is unknown): 2 km
Inferred Minimum Extent Justification: In the overwhelming majority of situations with most taxa likely to be tracked and mapped the inferred extent is simply the entire contiguous or nearly contiguous suitable habitat, which will usually be a few hundred hectares or less or a fairly obvious collection of patches within a well defined community. However in situations with extensive contiguous habitat or closely proximate patches (e.g. along a ridgetop or along a river) it is unreasonable to assume it is consistently unoccupied, but occupancy should not be inferred over more than 2 kilometers without additional data.
Date: 12Sep2001
Author: Schweitzer, Dale F.
Notes: These Specs are not appropriate for migratory species.
Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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Element Ecology & Life History Edition Date: 23Jan1995
Element Ecology & Life History Author(s): MAM

Zoological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).

References
Help
  • Lotts, K., and T. Naberhaus, coordinators. 2017. Butterflies and Moths of North America. Available online: http://www.butterfliesandmoths.org/ (Version December 2018).

  • Opler, P. A., and A. D. Warren. 2002. Butterflies of North America. 2. Scientific Names List for Butterfly Species of North America, north of Mexico. C.P. Gillette Museum of Arthropod Diversity, Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, Colorado. 79 pp.

  • Pelham, J. P. 2008. A catalogue of the butterflies of the United States and Canada with a complete bibliography of the descriptive and systematic literature. The Journal of Research on the Lepidoptera. Volume 40. 658 pp. Revised 14 February, 2012.

  • Pohl, G.R., J. Landry, B. C. Schmidt, J.D. Lafontaine, J.T. Troubridge, A.D. Macaulay, E.J. Van Neiukerken, J.R. DeWaard, J.J. Dombroskie, J. Klymko, V. Nazari, and K. Stead. 2018. Annotated Checklist of the Moth and Butterflies (Lepidoptera) of Canada and Alaska. Pensoft Publishers. Bulgaria. 580 pp.

  • Pohl, G.R.  J-F. Landry, B.C. Schmidt, J.D. Lafontaine, J.T. Troubridge, A.D. Macaulay, E.van Nieukerken, J.R. deWaard, J.J. Dombroskie, J. Klymko, V. Nazari and K. Stead. 2018. Annotated checklist of the moths and butterflies (Lepidoptera) of Canada and Alaska. Pensoft Publishers. 580 pp.

  • Scott, J. A. 1986. The Butterflies of North America: A Natural History and Field Guide. Stanford University Press, Stanford CA. 583 pp.

  • Stanford, R. E. and P. A. Opler. 1993. Atlas of western butterflies. Unpubl. Rep. 275 pp.

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