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

Pygmarrhopalites bimus (Christiansen, 1966)

Taxonomy

Kingdom Animalia
Phylum Arthropoda
Subphylum Hexapoda
Class Collembola
Order Symphypleona
Family Arrhopalitidae
Genus Pygmarrhopalites
Species Pygmarrhopalites bimus (Christiansen, 1966)

Synonyms

  • Arrhopalites bimus Christiansen, 1966 (prior combination, CoL)

Description

Diagnostic characters

Ecological class
Troglobiont
Realm
Terrestrial
Troglomorphy
Troglomorphic

Distribution

Type locality

Shiloh Cave, Lawrence Co. IN

Range

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

Continent

North America

Country

United States

States and provinces

Iowa, Indiana, Kentucky, Tennessee

Counties

Indiana
Lawrence
Kentucky
Barren
Tennessee
Jackson

Karst regions

Driftless Area, Interior Low Plateau

Specimens

Type material

Holotype
32630 · Museum of Comparative Zoology, Harvard

Collections holding material

InstitutionLots
Universidade Estadual da Paraiba 2
Museum of Comparative Zoology, Harvard 1

3 cataloged lots in 2 collections. 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 3 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.

Conservation and management

NatureServe

G3G4 Vulnerable to Apparently Secure

G1G2G3▲G4▲G5

Global rank last reviewed 21 August 2002.

Subnational ranks

Indiana
S1 Critically Imperiled
Iowa
SNR Unranked
Kentucky
SH Possibly Extirpated

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
4QNXW
GBIF
10795964
iNaturalist
861529

References

  • Lewis, J.J. & Lewis, S.L. 2007. A biological reconnaissance of selected caves in the Highland Rim area of central Tennessee. Tennessee Chapter Cave Program, The Nature Conservancy, Nashville, Tennessee, USA. 42 pp.
  • Lewis, J.J., Whitaker, J.O. & Krantz, G.W. 2010. A biological reconnaissance of the invertebrate fauna of twelve Tennessee caves with notes on the guanophilic mites of the genus Macrocheles. Journal of the Tennessee Academy of Science 85: 53–61.

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

How to cite this account

Pygmarrhopalites bimus (Christiansen, 1966). Cave Biology Data Portal, account SP-0454. https://cavebiology.org/species/pygmarrhopalites-bimus/ (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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