Speckled pocketbook (Lampsilis streckeri)

Federal Register | Recovery | Critical Habitat | Conservation Plans | Petitions | Life History

Listing Status:   


General Information

Shell thin, elliptical to oblong ovate, only slighty inflated, umbo small, only scarcely raised above hinge line; posterior ridge rounded; sexually dimorphic with females more broadly rounded posteriorly and slightly inflated, pseudocardinal teeth thin but well developed, lateral teeth thin. Periostracum external shell base color tan to yellowish brown, color rays numerous, thin to broad, dark green to black, wavy, broken, some chevron shaped spots, often covering more of the shell than the base coloration; nacre salmon to white, iridescent posteriorly.

  • States/US Territories in which the Speckled pocketbook, Wherever found is known to or is believed to occur:  Arkansas
  • US Counties in which the Speckled pocketbook, Wherever found is known to or is believed to occur:  View All
  • Countries in which the the Speckled pocketbook, Wherever found is known to occur:  United States
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
1989-02-28 Southeast Region (Region 4) Wherever found

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
1988-07-25 00:00:00.0 53 FR 27884 27887 Proposed End. Status for Speckled Pocketbook Mussel (Lampsilis Strecker); 53 FR 27884-27887
1989-02-28 00:00:00.0 54 FR 8339 8342 ETWP; Endangered Status for Speckled Pocketbook, (Lampsilis streckeri); 54 FR 8339 8342
2005-07-26 00:00:00.0 70 FR 43171 43173 5-Year Review of 13 Southeastern Species
2014-03-25 00:00:00.0 79 FR 16366 16368 Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of 33 Southeastern Species

» Recovery

Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
1992-01-02 Speckled Pocketbook Mussel View Implementation Progress Final
Other Recovery Documents
Date Citation Page Title Document Type
2014-03-25 79 FR 16366 16368 Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of 33 Southeastern Species
  • Notice 5-year Review, Initiation
2005-07-26 70 FR 43171 43173 5-Year Review of 13 Southeastern Species
  • Notice 5-year Review
Five Year Review
Date Title
2015-03-17 Speckled Pocketbook (Lampsilis streckeri) 5-Year Review (2015)
2007-01-09 Speckled Pocketbook 5-year review

» Critical Habitat

No critical habitat rules have been published for the Speckled pocketbook.

» Conservation Plans

Safe Harbor Agreements (SHA): (learn more)
SHA Plan Summaries
Upper Little Red River, Programmatic SHA

» Petitions

» Life History

Habitat Requirements

Speckled Pocketbook occurs in a variety of microhabitats including 1) low velocity shallow glides with gravel and sand substrate, 2) deeper glides in sand/gravel filled crevices between boulders or bedrock fissures, 3) deeper glides in sand/gravel underneath slab rock boulders, 4) low gradient riffles dominated by cobble substrate with lower percentages of boulder and large gravel, and 5) pools with sand/gravel accumulated between large rocks and boulders (generally along the downslope of the bank) (Harris 1993, Winterringer 2003, USFWS 2015).

Food Habits

Food items include algae, bacteria, detritus (disintegrated organic debris), and microscopic animals (Strayer et al. 2004, pp. 430431). It also has been surmised that dissolved organic matter may be a significant source of nutrition (Strayer et al. 2004, p. 430). Adults are filter feeders and generally orient themselves on or near the substrate surface to take in food and oxygen from the water column. Juveniles typically burrow completely beneath the substrate surface and are pedal (foot) feeders (bringing food particles inside the shell for ingestion that adhere to the foot while it is extended outside the shell) until the structures for filter feeding are more fully developed (Yeager et al. 1994, pp. 200221; Gatenby et al. 1996, p. 604).

Movement / Home Range

Sedentary. Restricted to the Little Red River drainage (White River system) in the Boston Mountains of north central Arkansas. Known from the Archey Fork, Middle Fork, South Fork, Devils Fork, and Beech Fork of the Little Red River and from Turkey Creek and Big Creek.

Reproductive Strategy

Winterringer found seven centrachid species (Ambloplites ariommus, Lepomis cyanellus, L. megalotis, L. gulosus, L. macrochirus, Micropterus dolomieu and M. punctulatus) on which glochidia successfully transformed to juveniles in lab trials with the Lepomis species more successful by far (Winterringer 2003).


Maximum length to ca. 95 mm and maximum life expectancy 10-12 years (Winterringer 2003, USFWS 2015).

» Other Resources

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