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Cave Biology Data Portal

Subterranean biodiversity of North America and around the globe

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

Franz's Cave Amphipod
Stygobromus franzi Holsinger, 1978

Taxonomy

Kingdom Animalia
Phylum Arthropoda
Subphylum Crustacea
Class Malacostraca
Order Amphipoda
Family Crangonyctidae
Genus Stygobromus
Species Stygobromus franzi Holsinger, 1978

Description

Diagnostic characters

Ecological class
Stygobiont
Realm
Aquatic
Troglomorphy
Troglomorphic

Distribution

Type locality

Crabtree Cave, Garrett Co., MD

Range

Known from three states in the Appalachians karst region.

Continent

North America

Country

United States

States and provinces

Maryland, Pennsylvania, West Virginia

Counties

County-level records have not been compiled for this taxon. Distribution is recorded at state and karst-region level.

Karst regions

Appalachians

Specimens

Type material

Holotype
USNM 168821 · National Museum of Natural History, Smithsonian Institution
Paratype ×7
National Museum of Natural History, Smithsonian Institution

Collections holding material

InstitutionLots
National Museum of Natural History, Smithsonian Institution 46

46 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 46 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

Maryland
S2S3 Imperiled to Vulnerable
Pennsylvania
S1 Critically Imperiled
West Virginia
S1 Critically Imperiled

State and federal status

Not listed under the U.S. Endangered Species Act

Other resources

Catalogue of Life
538LT
GBIF
2217868
ITIS
621631
iNaturalist
231864

How to cite this account

Stygobromus franzi Holsinger, 1978. Cave Biology Data Portal, account SP-1020. https://cavebiology.org/species/stygobromus-franzi/ (accessed 3 September 2026).

Data sources and funding are listed in the Acknowledgments.

Spotted something wrong on this page? Report a correction. Accounts are compiled from many sources and corrections from people who know the group are the most useful email we get.

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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