# Fusconaia subrotunda

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Species of bivalve

Fusconaia subrotunda Conservation status Vulnerable (IUCN 3.1)[1] Threatened (ESA)[2][3] Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Order: Unionida Family: Unionidae Genus: Fusconaia Species: F. subrotunda Binomial name Fusconaia subrotunda (Lea, 1831) Synonyms[4] List Fusconaia subrotunda subsp. subrotunda (Lea, 1831) Fusconaia subrotunda subsp. pilaris (Lea, 1840) Fusconaia subrotunda subsp. kirtlandiana (Lea, 1834) Fusconaia subrotunda subsp. lesueuriana (Lea, 1840) Unio subrotundus Lea, 1831 Unio kirtlandianus Lea, 1834 Unio politus Conrad, 1837 Unio pilaris Lea, 1840 Unio lesueurianus Lea, 1840 Unio globatus Lea, 1871 Unio bursapastoris B.H. Wright, 1896 Quadrula flexuosa Simpson, 1900 Quadrula andrewsii Marsh, 1902 Quadrula beauchampii Marsh, 1902 Quadrula kirtlandiana subsp. minor Simpson, 1900 Fusconaja subrotunda subsp. leucogona Ortmann, 1913

***Fusconaia subrotunda***, the **longsolid**,[2][3] **long solid mussel** or **long solid naiad**, is a [species](/source/Species) of [freshwater mussel](/source/Freshwater_mussel), an [aquatic](/source/Aquatic_animal) [bivalve](/source/Bivalve) [mollusk](/source/Mollusk) in the family [Unionidae](/source/Unionidae).

This mussel, sometimes called a pigtoe, is found in river gravel. Young mussels are light brown, but darken to nearly black with age.

This species is found in [Canada](/source/Canada) and the [United States](/source/United_States).

## Subspecies

- *Fusconaia subrotunda kirklandiana*

- *Fusconaia subrotunda lesueriana* Lea

- *Fusconaia subrotunda pilaris* Lea

- *Fusconaia subrotunda subrotunda*

## References

1. **[^](#cite_ref-iucn_status_16_November_2021_1-0)** Cummings, K.; Cordeiro, J. (2012). ["*Fusconaia subrotunda*"](https://www.iucnredlist.org/species/8775/3146358). *[IUCN Red List of Threatened Species](/source/IUCN_Red_List)*. **2012** e.T8775A3146358. [doi](/source/Doi_(identifier)):[10.2305/IUCN.UK.2012.RLTS.T8775A3146358.en](https://doi.org/10.2305%2FIUCN.UK.2012.RLTS.T8775A3146358.en). Retrieved 16 November 2021.

1. ^ [***a***](#cite_ref-ecos_2-0) [***b***](#cite_ref-ecos_2-1) ["Longsolid (*Fusconaia subrotunda*)"](https://ecos.fws.gov/ecp/species/9880). *Environmental Conservation Online System*. U.S. Fish & Wildlife Service. Retrieved 27 November 2023.

1. ^ [***a***](#cite_ref-fr88_3-0) [***b***](#cite_ref-fr88_3-1) 88 [FR](/source/Federal_Register) [14794](https://www.federalregister.gov/citation/88-FR-14794)

1. **[^](#cite_ref-4)** ["*Fusconaia subrotunda* (Lea, 1831)"](https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=80051). [Integrated Taxonomic Information System](/source/Integrated_Taxonomic_Information_System). Retrieved 28 November 2023.

## External links

- [long solid mussel](http://www.inhs.uiuc.edu/cbd/musselmanual/page44_5.html)

Taxon identifiers Fusconaia subrotunda Wikidata: Q3013291 BOLD: 79254 CoL: 6JSK5 ECOS: 9880 EoL: 449604 GBIF: 2288194 iNaturalist: 101109 IRMNG: 11369401 ITIS: 80051 IUCN: 8775 NatureServe: 2.118395 NCBI: 293108 Open Tree of Life: 621687 WoRMS: 857313 Unio subrotundus Wikidata: Q109546344 CoL: 7DKF7 GBIF: 8156806 ITIS: 986655

This Unionidae-related article is a stub. You can help Wikipedia by adding missing information.

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