Stygobromus allegheniensis - (Holsinger, 1967)
Allegheny Cave Amphipod
Taxonomic Status: Accepted
Related ITIS Name(s): Stygobromus allegheniensis (Holsinger, 1967) (TSN 93877)
Unique Identifier: ELEMENT_GLOBAL.2.113813
Element Code: ICMAL05060
Informal Taxonomy: Animals, Invertebrates - Crustaceans - Amphipods
 
Kingdom Phylum Class Order Family Genus
Animalia Crustacea Malacostraca Amphipoda Crangonyctidae Stygobromus
Genus Size: D - Medium to large genus (21+ species)
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Concept Reference
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Concept Reference: Fitzpatrick, J.F., Jr. 1983. How to Know the Freshwater Crustacea. Wm. C. Brown Co. Publishers. Dubuque, Iowa. 277 pp.
Concept Reference Code: B83FIT01EHUS
Name Used in Concept Reference: Stygobromus allegheniensis
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 21Aug2002
Global Status Last Changed: 21Aug2002
Rounded Global Status: G5 - Secure
Reasons: Apparently rather common in caves in the glaciated appala- chian plateau of NY. Has one of the broadest ranges of any species in the genus. Yet, species is still relatively uncommon.
Nation: United States
National Status: N5 (21Aug2002)

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 Maryland (S2S3), New York (SNR), Pennsylvania (S2S3), West Virginia (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent: 250-20,000 square km (about 100-8000 square miles)
Range Extent Comments: Regional endemic. One of the broadest of any species in the genus; extends from central and eastern New York south thru Pennsylvania to W Maryland and NE West Virginia. Covers a linear distnace of ca. 596 km. from north to south.

Number of Occurrences: 21 - 80
Number of Occurrences Comments: Ca. 40 known localities; NY-22, PA-14, MD-3, WV-1.

Population Size: 1000 - 10,000 individuals

Overall Threat Impact Comments: Possible threat from pollution of groundwater habitats.

Other NatureServe Conservation Status Information

Inventory Needs: Re-verify historic locales.

Protection Needs: Efforts should be made to protect at least 1-2 sites in each state.

Distribution
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Global Range: (250-20,000 square km (about 100-8000 square miles)) Regional endemic. One of the broadest of any species in the genus; extends from central and eastern New York south thru Pennsylvania to W Maryland and NE West Virginia. Covers a linear distnace of ca. 596 km. from north to south.

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 nation

U.S. & Canada State/Province Distribution
United States MD, NY, PA, WV

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
MD Allegany (24001), Garrett (24023), Washington (24043)
PA Berks (42011), Centre (42027), Clinton (42035), Fayette (42051), Lancaster (42071)*, Lebanon (42075), Mifflin (42087), Monroe (42089)*, Somerset (42111), Union (42119), Westmoreland (42129)
WV Berkeley (54003)*, Hardy (54031)*, Morgan (54065)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
02 Middle Delaware-Mongaup-Brodhead (02040104)+*, Schuylkill (02040203)+, Bald Eagle (02050204)+, Lower West Branch Susquehanna (02050206)+, Lower Susquehanna-Penns (02050301)+, Upper Juniata (02050302)+*, Lower Juniata (02050304)+, Lower Susquehanna-Swatara (02050305)+, Lower Susquehanna (02050306)+*, North Branch Potomac (02070002)+, Cacapon-Town (02070003)+, Conococheague-Opequon (02070004)+
05 Conemaugh (05010007)+, Cheat (05020004)+, Lower Monongahela (05020005)+, Youghiogheny (05020006)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A cave amphipod.
Non-Migrant: N
Locally Migrant: N
Long Distance Migrant: N
Subterranean Habitat(s): Subaquatic
Special Habitat Factors: Subterranean obligate
Habitat Comments: Occupies a variety of groundwater habitats such as cave pools and streams, wells, seeps, mines and springs.
Economic Attributes Not yet assessed
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Management Summary
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Biological Research Needs: Find out ecological threats.
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: 28Feb1986
NatureServe Conservation Status Factors Author: Wilkinson, A.M.
Element Ecology & Life History Edition Date: 08Apr1999

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

References
Help
  • Fitzpatrick, J.F., Jr. 1983. How to Know the Freshwater Crustacea. Wm. C. Brown Co. Publishers. Dubuque, Iowa. 277 pp.

  • HOLSINGER, J.R. 1984. LETTER OF 9 APRIL TO A.W. NORDEN.

  • HOLSINGER, J.R. 1986. LETTER OF 13 OCTOBER TO A.W. NORDEN REGARDING AMPHIPOD SPECIMEN DETERMINATIONS.

  • HOLSINGER, J.R. 1988. LETTER OF 12 FEBRUARY TO D.J. FELLER RE: DETERMINATION OF FELLER'S AMPHIPODS.

  • Holsinger, J.R. 1967. Systematics, speciation, and distribution of the subterranean amphipod genus Stygonectes (Gammaridae). Bulletin of the United States National Museum, 259: 1-176.

  • Holsinger, J.R. 1978. Systematics of the subterranean amphipod genus Stygobromus (Crangonyctidae). Part II: Species of the eastern United States. Smithsonian Contributions to Zoology, 266: 1-144.

  • McLaughlin, P.A., D.K. Camp, M.V. Angel, E.L. Bousfield, P. Brunel, R.C. Brusca, D. Cadien, A.C. Cohen, K. Conlan, L.G. Eldredge, D.L. Felder, J.W. Goy, T. Haney, B. Hann, R.W. Heard, E.A. Hendrycks, H.H. Hobbs III, J.R. Holsinger, B. Kensley, D.R. Laubitz, S.E. LeCroy, R. Lemaitre, R.F. Maddocks, J.W. Martin, P. Mikkelsen, E. Nelson, W.A. Newman, R.M. Overstreet, W.J. Poly, W.W. Price, J.W. Reid, A. Robertson, D.C. Rogers, A. Ross, M. Schotte, F. Schram, C. Shih, L. Watling, G.D.F. Wilson, and D.D. Turgeon. 2005. Common and scientific names of aquatic invertebrates from the United States and Canada: Crustaceans. American Fisheries Society Special Publication 31: 545 pp.

  • NORDEN, A.W. 1981. LETTER OF 30 OCTOBER TO G. FENWICK WITH A 13 PAGE ATTACHMENT, A SURVEY OF THE RARE FRESHWATER INVERTEBRATES OF MARYLAND.

  • NORDEN, A.W. 1986. MEMORANDUM OF 28 OCTOBER TO L.M. DAVIDSON RE: DATA ON MARYLAND STYGOBROMUS.

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