Unionoidea | Unionidae | Ambleminae | Quadrulini | Quadrulina | Quadrula species Quadrula quadrula (Rafinesque, 1820): specimens 25 nominal species as synonyms
Taxonomic History (since 2007)
Quadrula quadrula — Zhou et al. (2007), Tiemann et al. (2007), Graf & Cummings (2007), Chapman et al. (2008), ..., Keogh et al. (2024), Hou et al. (2024), Xiang et al. (2025), Dai et al. (2025)
Quadrula apiculata — Graf & Cummings (2007), Williams et al. (2008), Cummings & Graf (2010), Bogan (2010), ..., Pfeiffer et al. (2019), Pfeiffer et al. (2019), Inoue et al. (2020), Hauck et al. (2023)
Quadrula rumphiana — Graf & Cummings (2007), Williams et al. (2008), Cummings & Graf (2010), Bogan (2010), ..., Williams et al. (2017), Inoue et al. (2018), Burlakova et al. (2019), Hauck et al. (2023)
Quadrula fragosa — Watters et al. (2009)
Quadrula quadrula quadrula — ITIS (2012)
Q. quadrula — Sheng et al. (2014)
Quadrula quadrula rumphiana — Keogh et al. (2024)
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Range: Widespread in the Interior, Nelson and Great Lakes basins, as well as the western Gulf Coastal Plain, North America. Map of Georeferenced Specimens
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USA |
 USNM_84165 Cincinnati, Ohio
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 USNM_84169 Texas
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 USNM_84172 Leon Co., Texas
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 USNM_84174 Cincinnati, Ohio
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 USNM_84189 West Georgia
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 USNM_84190 Othcaloosa Cr., Ga.
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 USNM_84212 Claiborne, Ala. R., Alabama
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 ANSP_20224 Salt River
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 UMMZ_209203 Fox River, nr. De Pere, Wisc.
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 CM_61.6892 Lake Contrary, St. Joseph, Buchanan Co., Missouri
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type locality
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Genbank Vouchers
MexicoFLMNH_438809_7 (SK20022) (COI M-type, COI) Rio Grande (27.62609, -99.58903) FLMNH_438809_9 (SK20029) (COI M-type, COI) Rio Grande (27.62609, -99.58903) FLMNH_438809_3 (SK20024) (COI M-type, COI) Rio Grande (27.62609, -99.58903) FLMNH_438809_1 (SK20021) (COI M-type, COI) Rio Grande (27.62609, -99.58903) FLMNH_438809_6 (SK20027) (COI) Rio Grande (27.62609, -99.58903) FLMNH_438809_5 (SK20026) (COI) Rio Grande (27.62609, -99.58903) FLMNH_438809_1 (SK20030) (COI) Rio Grande (27.62609, -99.58903) FLMNH_438809_4 (SK20025) (COI) Rio Grande (27.62609, -99.58903) FLMNH_438809_2 (SK20023) (COI) Rio Grande (27.62609, -99.58903) FLMNH_438809_8 (SK20028) (COI) Rio Grande (27.62609, -99.58903)
U.S.A.ASUMZ_1234_3 (COI, ND1, ITS1, 5.8S) Arkansas River (35.11874, -92.5532) FLMNH_438419_1 (SK19090) (COI, ND1, ITS1, 5.8S) Black Warrior (32.555, -87.84409) FLMNH_439169 (QrumTom005) (COI, ND1, ITS1, 5.8S) Sipsey River (33.040556, -88.113611) JFBM_22857 (SK18144) (COI M-type, COI, ND1, ITS1) Alabama River (32.392701, -87.004616) TXA&M_NRI_8262 (COI, ND1, ITS1, 5.8S) Trinity River (31.6632089, -95.79061759) FLMNH_439169 (QrumTom011) (COI, ND1, ITS1, 5.8S) Sipsey River (33.040556, -88.113611) FLMNH_441183 (QapiCol065) (COI, ND1, ITS1, 5.8S) Colorado River (31.4831003, -99.030595) FLMNH_438818 (QapiGal017) (COI, ND1, ITS1, 5.8S) Galveston Bay (29.789741, -95.623742) FLMNH_438814 (QapiNav029) (COI, ND1, ITS1, 5.8S) Navidad River (28.95756, -96.54243) FLMNH_438814 (QapiNav028) (COI, ND1, ITS1, 5.8S) Navidad River (28.95756, -96.54243) FLMNH_438818 (QapiGal016) (COI, ND1, ITS1, 5.8S) Galveston Bay (29.789741, -95.623742) FLMNH_438419_2 (SK19091) (COI, ND1, ITS1, 5.8S) Black Warrior (32.555, -87.84409) FLMNH_439169 (QrumTom008) (COI, ND1, ITS1, 5.8S) Sipsey River (33.040556, -88.113611) JFBM_23034_3 (SK19085) (COI, COI M-type) Big Canoe Creek (33.848566, -86.250472) JFBM_23034_1 (SK19083) (COI, COI M-type) Big Canoe Creek (33.848566, -86.250472) TXA&M_NRI_8382_1 (COI, ND1) Rio Grande (27.602238, -99.580507) TXA&M_NRI_8378_3 (SK19164) (COI, ND1) Trinity River (33.305606, -96.607848) UA_1489 (QrumMob003) (COI, ND1) Sipsey River (33.1025, -87.95) ASUMZ_1460_7 (SK19054) (COI, ND1) Bayou LaGrue (34.09942, -91.16562) TXA&M_NRI_8378_2 (SK19163) (COI) Trinity River (33.305606, -96.607848) JFBM_23034_2 (SK19084) (COI) Big Canoe Creek (33.848566, -86.250472) Mp_4399_ (SK21126) (COI) Little River (33.936448, -94.829126) ASUMZ_1234_4 (ND1) Arkansas River (35.11874, -92.5532) Mp_4399_ (SK21120) (COI) Little River (33.936448, -94.829126) Mp_4399_ (SK21115) (COI) Little River (33.936448, -94.829126) Mp_4399_ (SK21119) (COI) Little River (33.936448, -94.829126) Mp_4399_ (SK21123) (COI) Little River (33.936448, -94.829126) Mp_4399_ (SK21111) (COI) St. Croix River (45.395003, -92.664611) JFBM_23179_1 (178) (COI) Kiamichi River (34.656876, -95.055331) ASUMZ_1234_1 (ND1) Arkansas River (35.11874, -92.5532) ASUMZ_1234_9 (ND1) Arkansas River (35.11874, -92.5532) Mp_4399_ (SK21125) (COI) Little River (33.936448, -94.829126) ASUMZ_1234_10 (ND1) Arkansas River (35.11874, -92.5532) Mp_4399_ (SK21127) (COI) Little River (33.936448, -94.829126) ASUMZ_1234_2 (ND1) Arkansas River (35.11874, -92.5532) TXA&M_NRI_8382_2 (COI) Rio Grande (27.602238, -99.580507) JFBM_23179_2 (179) (COI) Kiamichi River (34.656876, -95.055331) JFBM_23178 (152) (COI) Glover River (34.032063, -94.9393) Mp_4399_ (SK21112) (COI) St. Croix River (45.395003, -92.664611)
USAUF_441088 (COI, 16S, 28S, ITS1, 5.8S, SRA) USA, Texas, San Saba County, San Saba River at CR 104, San Saba River Golf Course, near San Saba, TX (31.20738, -98.68761) FLMNH_438561_3 (QapiNue088) (COI, COI M-type, ND1, ITS1, 5.8S) Nueces River (28.47405, -98.25166) FLMNH_438561_1 (SK19094) (COI, COI M-type, ND1, ITS1, 5.8S) Nueces River (28.47405, -98.25166) UA_3563 (COI, ND1, 28S, ITS1, 5.8S) Ohio River, Ohio drainage (37.8, -87.6569) FLMNH_438891_1 (SK19058) (COI M-type, COI, ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) FLMNH_438952_2 (QapiTri113) (COI, ND1, ITS1, 5.8S) Trinity River (32.980521, -97.09841) FLMNH_438561_5 (QapiNue090) (COI, COI M-type, ND1, ITS1) Nueces River (28.47405, -98.25166) FLMNH_441088 (QapiCol044) (COI, ND1, ITS1, 5.8S) San Saba River (31.20738, -98.68761) UF_439156 (COI, ND1, ITS1, 5.8S) USA, Ohio, Wood County, Ohio River; Buckley Island backchannel (39.3912312, -81.4209442) FLMNH_438554_3 (QapiRGr082) (COI, ND1, ITS1, 5.8S) Rio Grande (27.63774, -99.62695) FLMNH_438747 (QapiRGr092) (COI, ND1, ITS1, 5.8S) Rio Grande (27.64193, -99.60222) FLMNH_439196 (SK20035) (COI, ND1, ITS1, 5.8S) Neches River (30.659012, -94.170894) FLMNH_439156 (SK19102) (COI, ND1, ITS1, 5.8S) Ohio River (39.39123122, -81.42094424) FLMNH_438804_1 (SK19097) (COI, ND1, ITS1, 5.8S) Nueces River (28.337458, -98.086636) UF_438554 (QapiRGr081) (COI, ND1, ITS1, 5.8S) USA, Texas, Webb County, Rio Grande (site 2), about 300 m upstream of Santa Isabel Creek (27.63774, -99.62695) JFBM_22865_4 (SK18182) (COI, COI M-type, ITS1, 5.8S) Osage River (38.231031, -92.558275) FLMNH_438801_1 (SK19096) (COI, ND1, ITS1, 5.8S) Nueces River (28.382964, -98.109617) Mp_4399_ (SK19067) (COI, ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) FLMNH_438554_2 (QapiRGr081) (COI, ND1, ITS1, 5.8S) Rio Grande (27.63774, -99.62695) FLMNH_438787 (QquaRed002) (COI, ND1, ITS1, 5.8S) Red River (33.854656, -95.341305) FLMNH_439156 (SK19101) (COI, ND1, ITS1, 5.8S) Ohio River (39.39123122, -81.42094424) FLMNH_438891_9 (SK19066) (COI, ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) FLMNH_438884_4 (SK20039) (COI, ND1, ITS1, 5.8S) Pascagoula River (30.63228, -88.652401) FLMNH_438826_2 (SK19087/20050) (COI, ND1, ITS1, 5.8S) Bogue Chitto AL (32.31001, -87.27863) FLMNH_438891_6 (SK19063) (COI, ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) FLMNH_438313_1 (SK20010/041) (COI, ND1, ITS1, 5.8S) Trinity River (30.627278, -95.008917) FLMNH_438554_4 (QapiRGr083) (COI, ND1, ITS1, 5.8S) Rio Grande (27.63774, -99.62695) FLMNH_438561_2 (SK19095) (COI, ND1, ITS1, 5.8S) Nueces River (28.47405, -98.25166) FLMNH_438884_3 (SK20038) (COI, ND1, ITS1, 5.8S) Pascagoula River (30.63228, -88.652401) FLMNH_438891_8 (SK19065) (COI, ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) FLMNH_441182_2 (QapiTri064) (COI, ND1, ITS1, 5.8S) Trinity River (32.592543, -96.486377) FLMNH_438891_2 (SK19059) (COI, ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) FLMNH_439156 (SK19100) (COI, ND1, ITS1, 5.8S) Ohio River (39.39123122, -81.42094424) FLMNH_438561_4 (QapiNue089) (COI, ND1, ITS1, 5.8S) Nueces River (28.47405, -98.25166) FLMNH_438891_1 (SK19069) (COI, ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) FLMNH_438826_1 (SK19086/20049) (COI, ND1, ITS1, 5.8S) Bogue Chitto AL (32.31001, -87.27863) JFBM_22865_1 (SK18179) (COI, COI M-type, ND1) Osage River (38.231031, -92.558275) FLMNH_438891_7 (SK19064) (ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) JFBM_23041 (SK19117) (COI, COI M-type, ND1) Mississippi River (43.634071, -91.241814) FLMNH_438891_3 (SK19060) (ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) JFBM_23044_5 (SK19125) (COI, COI M-type, ND1) Mississippi River (42.056605, -90.14924) FLMNH_438891_1 (SK19068) (ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) JFBM_23045_3 (SK19128) (COI, COI M-type, ND1) Mississippi River (45.030727, -93.282595) JFBM_23044_3 (SK19123) (COI, COI M-type, ND1) Mississippi River (42.056605, -90.14924) FLMNH_438891_5 (SK19062) (ND1, ITS1, 5.8S) Alabama River (31.6139, -87.55) JFBM_22865_2 (SK18180) (COI, ND1) Osage River (38.231031, -92.558275) TXA&M_NRI_8566_1 (SK19176) (COI, ND1) Little River (33.9762, -94.9322) FLMNH_438891_1 (SK19070) (ND1, ITS1) Alabama River (31.6139, -87.55) JFBM_23042 (SK19118) (COI, ND1) Mississippi River (43.603198, -91.230798) UMMZ_265699 (COI, 28S) Grand River, MI ASUMZ_QF4 (QfraOua020) (COI, ND1) USA: Ouachita River (32.95613 N 92.07864 W) ASUMZ_QF5 (QfraOua021) (COI, ND1) Ouachita River (32.95613, -92.07864) JFBM_22865_6 (SK18184) (COI, COI M-type) Osage River (38.231031, -92.558275) JFBM_23044_1 (SK19121) (COI, COI M-type) Mississippi River (42.056605, -90.14924) JFBM_23040_4 (SK19112) (COI, COI M-type) Iowa River (41.555722, -91.519682) JFBM_23045_2 (SK19127) (COI, ND1) Mississippi River (45.030727, -93.282595) JFBM_23045_1 (SK19126) (COI, ND1) Mississippi River (45.030727, -93.282595) JFBM_23044_4 (SK19124) (COI, ND1) Mississippi River (42.056605, -90.14924) JFBM_23043_2 (SK19120) (COI, COI M-type) Mississippi River (43.664114, -91.235728) ASUMZ_1230_7 (QapiRed139) (COI, ND1) Little River (33.691899, -93.965148) JFBM_23040_5 (SK19113) (COI, COI M-type) Iowa River (41.555722, -91.519682) JFBM_22865_3 (SK18181) (COI, ND1) Osage River (38.231031, -92.558275) ASUMZ_QF1 (QfraOua017) (COI, ND1) Ouachita River (33.03438, -92.09618) FLMNH_439156 (QquaOhi016) (COI, ND1) Ohio River (39.39123122, -81.42094424) JFBM_22865_5 (SK18183) (COI, COI M-type) Osage River (38.231031, -92.558275) FLMNH_438313_6 (SK20015/046) (COI M-type, COI) Trinity River (30.627278, -95.008917) JFBM_23044_2 (SK19122) (COI, ND1) Mississippi River (42.056605, -90.14924) JFBM_23043_1 (SK19119) (COI, COI M-type) Mississippi River (43.664114, -91.235728) UAUC_902 (ND1) Muskingum R., Washington Co., Ohio FLMNH_438884_1 (SK20036) (COI M-type) Pascagoula River (30.63228, -88.652401) UAUC_2620 (ND1) Neches R., Tyler Co., Texas UAUC_1698 (ND1) Spring R., Cherokee Co., Kansas UAUC_1695 (ND1) Ohio R.,Vanderburgh Co., Indiana TXA&M_NRI_8566_3 (SK19178) (COI) Little River (33.9762, -94.9322) TXA&M_NRI_8566_2 (SK19177) (COI) Little River (33.9762, -94.9322) JFBM_23040_6 (SK19114) (COI) Iowa River (41.555722, -91.519682) UAUC_1045 (ND1) Red R., Powell Co., Kentucky JFBM_23040_1 (SK19109) (COI) Iowa River (41.555722, -91.519682) JFBM_23040_3 (SK19111) (COI) Iowa River (41.555722, -91.519682) JFBM_23040_7 (SK19115) (COI) Iowa River (41.555722, -91.519682) FLMNH_438891_4 (SK19061) (ND1) Alabama River (31.6139, -87.55) JFBM_23040_8 (SK19116) (COI) Iowa River (41.555722, -91.519682) UAUC_435 (ND1) Oostanaula R., Gordon Co., Georgia FLMNH_438826_3 (SK20002) (COI) Bogue Chitto AL (32.31001, -87.27863) UAUC_331 (ND1) Coosawattee R., Gordon Co., Georgia UAUC_1044 (ND1) Black Warrior R., Jefferson Co., Alabama UAUC_722 (ND1) Sipsey R., Pickens Co., Alabama JFBM_23040_2 (SK19110) (COI) Iowa River (41.555722, -91.519682)
FLMNH_441004_1 (SK19092) (COI, ND1, ITS1, 5.8S) FLMNH_441182_1 (QapiTri063) (COI, ND1, ITS1, 5.8S) FLMNH_441004_2 (SK19093) (COI, ND1, ITS1, 5.8S) TXA&M_NRI_8427_2 (COI, ND1, ITS1, 5.8S) TXA&M_NRI_8470_2 (COI, ND1, ITS1, 5.8S) TXA&M_NRI_8122_1 (COI, ND1, ITS1, 5.8S) FLMNH_439143 (QapiPrl126) (COI, ND1, ITS1, 5.8S) FLMNH_438951_1 (QapiTri107) (COI, ND1, ITS1, 5.8S) FLMNH_439143 (SK19099) (COI, ND1, ITS1, 5.8S) TXA&M_NRI_8427_1 (COI, ND1, ITS1) JFBM_23111_2 (SK21002) (COI, ND1) TXA&M_NRI_8656_1 (SK19173) (COI, ND1) TXA&M_NRI_8437_2 (COI, ND1) ASUMZ_QF3 (QfraOua019) (COI, ND1) FLMNH_440990_2 (SK20007) (COI, ND1) JFBM_23111_1 (SK21001) (COI, ND1) JFBM_23111_3 (SK21003) (COI, ND1) UA_1726 (QspeMob015) (COI, ND1) TXA&M_NRI_8584_2 (SK19166) (COI, ND1) TXA&M_NRI_8602_3 (SK19170) (COI) TXA&M_NRI_8437_1 (COI) TXA&M_NRI_8656_2 (SK19174) (ND1) JBFMC_10006_5 (COI) UA20703 (ND1) ANSP_397246 (28S) TXA&M_NRI_8602_1 (SK19168) (COI) TXA&M_NRI_8610_1 (SK19171) (COI) TXA&M_NRI_8602_2 (SK19169) (COI) TXA&M_NRI_8656_3 (SK19175) (ND1) TXA&M_NRI_8584_1 (SK19165) (COI) UA_3609 (QquaOhi010) (ND1) UA_20703 (COI) TXA&M_NRI_8584_3 (SK19167) (COI) ANSP_A12728 (28S) TXA&M_NRI_8610_2 (SK19172) (COI) TXA&M_NRI_8122_2 (COI)
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