Acrolophitus pulchellus - (Bruner, 1889)
Idaho Point-headed Grasshopper
Other English Common Names: Idaho point-headed grasshopper
Taxonomic Status: Accepted
Related ITIS Name(s): Acrolophitus pulchellus (Bruner, 1889) (TSN 657829)
Unique Identifier: ELEMENT_GLOBAL.2.115813
Element Code: IIORT10010
Informal Taxonomy: Animals, Invertebrates - Insects - Grasshoppers
 
Kingdom Phylum Class Order Family Genus
Animalia Mandibulata Insecta Orthoptera Acrididae Acrolophitus
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Concept Reference
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Concept Reference: Otte, D. 1994-1995. Orthoptera Species File, Volumes 1-5. The Orthopterists' Society and The Academy of Natural Sciences, Philadelphia, Pennsylvania.
Concept Reference Code: N95OTT01EHUS
Name Used in Concept Reference: Acrolophitus pulchellus
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 03Jan2019
Global Status Last Changed: 03Jan2019
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G2 - Imperiled
Reasons: This species has a relatively small range, disjunct populations near different rivers, relatively few occurrences, and may specialize on mock goldenweed, Stenotus acaulis.
Nation: United States
National Status: N1N3 (31Jul2001)

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 Idaho (S2)

Other Statuses

IUCN Red List Category: VU - Vulnerable

NatureServe Global Conservation Status Factors

Range Extent: 1000-5000 square km (about 400-2000 square miles)
Range Extent Comments: Waterbury (2014) stated that total range was approximately 3000 square kilometers in Idaho, U. S.

Number of Occurrences: 6 - 20
Number of Occurrences Comments: Waterbury (2014) documented 13 localities in 2010, although some of these appear close enough to each other to be the same occurrence.

Overall Threat Impact: Medium
Overall Threat Impact Comments: Waterbury (2014) stated that widespread but low impacts included invasive plants, off road vehicles, habitat destruction due to agriculture, and grazing.

Short-term Trend: Unknown

Long-term Trend: Decline of <30% to relatively stable
Long-term Trend Comments: This species was not found near the Little Lost River, although it is not clear whether this is because it's been extirpated from there or that the historical locality information was too vague to do a proper resurvey; it was not found at least two other historic localities, but was found relatively nearby (Waterbury 2014).

Intrinsic Vulnerability: Highly to moderately vulnerable.
Intrinsic Vulnerability Comments: It appears to be a specialist on stemless mock goldenweed, Stenotus acaulis (Waterbury 2014).

Environmental Specificity Comments: Waterbury (2014) described habitat as "...windswept, flat to gently rolling outwash fans and alluvial fan terraces..."

Other NatureServe Conservation Status Information

Inventory Needs: This species should be searched for in unidentified material in museums and surveyed for at historic localities; especially in the Little Lost River drainage where it may have been extirpated (Waterbury 2014)..

Distribution
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Global Range: (1000-5000 square km (about 400-2000 square miles)) Waterbury (2014) stated that total range was approximately 3000 square kilometers in Idaho, U. S.

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: endemic to a single state or province

U.S. & Canada State/Province Distribution
United States ID

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
ID Clark (16033)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
17 Birch (17040216)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Non-Migrant: N
Locally Migrant: N
Long Distance Migrant: N
Habitat Comments: Waterbury described habitat as "...windswept, flat to gently rolling outwash fans and alluvial fan terraces..." and with stemless mock goldenweed, Stenotus acaulis (2014).
Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: Protecting known occurrences and surrounding areas from habitat destruction and degradation, not using pesticides in these areas, and avoiding major disturbances would likely help this species. Special attention should be paid to protecting areas with stemless mock goldenweed, Stenotus acaulis and its habitat of "...windswept, flat to gently rolling outwash fans and alluvial fan terraces..." from destruction/degradation (Waterbury 2014).
Biological Research Needs: Research into ecology and threats is needed (Waterbury 2014).
Population/Occurrence Delineation Not yet assessed
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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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NatureServe Conservation Status Factors Edition Date: 06Dec2018
NatureServe Conservation Status Factors Author: Almquist, D. T. (2018)

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

References
Help
  • Eades, D.C.and D. Otte. 2010. Orthoptera Species File Online. Version 2.0/4.0.Online. Available: http://orthoptera.speciesfile.org/HomePage.aspx

  • Otte, D. 1994-1995. Orthoptera Species File, Volumes 1-5. The Orthopterists' Society and The Academy of Natural Sciences, Philadelphia, Pennsylvania.

  • Symbiota Collections of Arthropods Network (SCAN). 2018. A data portal built to visualize, manipulate, and export species occurrences. http://scan-bugs.org/portal/index.php

  • Waterbury, B. A. 2014. Rediscovered populations of the Idaho point-headed grasshopper, Acrolophitus pulchellus (Bruner), 1890 (Orthoptera: Acrididae). Western North American Naturalist 74(3):349-355.

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