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Cave Biology Data Portal
Subterranean biodiversity of North America and around the globe
AnimaliaArthropodaChelicerataArachnidaPseudoscorpionesChernetidaeHesperochernes

Guano Pseudoscorpion
Hesperochernes occidentalis (Hoff & Bolsterli, 1956)

Taxonomy

Kingdom Animalia
Phylum Arthropoda
Subphylum Chelicerata
Class Arachnida
Order Pseudoscorpiones
Family Chernetidae
Genus Hesperochernes
Species Hesperochernes occidentalis (Hoff & Bolsterli, 1956)

Synonyms

  • Pseudozaona occidentalis Hoff & Bolsterli, 1956 (prior combination, CoL)

Description

Diagnostic characters

Ecological class
Troglobiont
Realm
Terrestrial
Troglomorphy
Troglomorphic

Distribution

Range

Known from 29 counties across four states across two karst regions.

Continent

North America

Country

United States

States and provinces

Arkansas, Missouri, Oklahoma, Texas

Counties

Arkansas
Benton, Marion, Newton, Searcy, Washington
Missouri
Barry, Camden, Carter, Christian, Crawford, Dade, Dent, Franklin, Greene, Hickory, Howell, Madison, Oregon, Ozark, Phelps, Pulaski, Reynolds, Shannon, Taney, Texas
Oklahoma
Adair, Delaware, Pontohoc, Texas

Karst regions

Other, Ozarks

Specimens

Type material

Holotype
INHS Insect Collection 531536 · Illinois Natural History Survey
Paratype ×8
Illinois Natural History Survey

Collections holding material

InstitutionLots
Illinois Natural History Survey 9

9 cataloged lots in 1 collection. Compiled from GBIF and not an exhaustive census: many collections are not yet digitised, and holdings are added continually. Search GBIF for specimen records.

Download all 9 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.

Conservation and management

NatureServe

G5 Secure

G1G2G3G4G5▲

Global rank last reviewed 21 August 2002.

Subnational ranks

Arkansas
S1 Critically Imperiled
Missouri
S3 Vulnerable
Ohio
SNR Unranked
Oklahoma
S1 Critically Imperiled
Texas
SNR Unranked

Ranks looked up 23 August 2026. Conservation status changes, and a rank here is as current as that date and no more.

State and federal status

Not listed under the U.S. Endangered Species Act.

Other resources

Catalogue of Life
3L59Q
GBIF
2127802
ITIS
199596
iNaturalist
221229

References

  • Fenolio, D.B. 2014. 2014 Ozark aquatic subterranean wildlife surveys. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 21 pp.
  • Fenolio, D.B. 2016. 2016 Ozark aquatic subterranean wildlife surveys. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 11 pp.
  • Fenolio, D.B. 2017. 2017 Ozark aquatic subterranean wildlife surveys. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 15 pp.
  • Fenolio, D.B., Niemiller, M.L., Slay, M.E. & Carter, E.T. 2018. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2018 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 25 pp.
  • Fenolio, D.B., Slay, M.E. & Niemiller, M.L. 2023b. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2023 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 24 pp.
  • Fenolio, D.B., Slay, M.E. & Niemiller, M.L. 2023a. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2022 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 24 pp.
  • McDaniel, V.R., Paige, K.N. & Tumlison, C.R. 1979. Cave fauna of Arkansas: additional invertebrate and vertebrate records. Journal of the Arkansas Academy of Science 33: 84–85. https://scholarworks.uark.edu/jaas/vol33/iss1/35. details
  • Stephen, C.D.R. 2022. Gene flow, morphology, and taxonomic revision of cave-obligate Hesperochernes pseudoscorpions. Auburn University, Auburn, Alabama, USA. 151 pp. https://etd.auburn.edu/bitstream/handle/10415/8182/StephenCDR_dissertation.pdf?sequence=2&isAllowed=y. details

This account was last revised 28 August 2026. Conservation ranks were looked up 23 August 2026.

How to cite this account

Hesperochernes occidentalis (Hoff & Bolsterli, 1956). Cave Biology Data Portal, account SP-0222. https://cavebiology.org/species/hesperochernes-occidentalis/ (accessed 18 October 2026).
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Data sources and funding are listed in the Acknowledgments.

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Cave Biology Data Portal

Species accounts, distributions, and conservation status for the subterranean fauna of North America and around the globe, with resources for the cave and karst research community.

Text and data CC BY 4.0. Images all rights reserved unless stated.

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