The January 2026 Mussel of the Month is Leila blainvilliana. Leila blainvilliana has peculiar posterior “siphons,” distinct from those of typical neotropical Mycetopodidae. Learn more and subscribe for FREE at musselproject.substack.com #MusselOfTheMonth #MUSSELp 🧪 Photo by Graf & Cummings

TBT. Way back in December 2010, the Mussel of the Month was Truncilla truncata! — musselpdb.org/motm/2010/10... #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp 🧪 Photo by Graf & Cummings

TBT. Way back in December 2015, the Mussel of the Month was Pronodularia japanensis! — musselpdb.org/motm/2015/15... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪 Photo by Graf & CummingsBa

TBT. Back in December 2020, the Mussel of the Month was Platynaias (née Lasmigona) subviridis! — musselpdb.org/motm/2020/20... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪 Photo by Graf & Cummings

The December 2025 Mussel of the Month is Mutela dubia. Mutela dubia (Iridinidae) from Africa, like so many freshwater mussels, has been “super-nominated.” Learn more and subscribe at musselproject.substack.com. #MusselOfTheMonth #MUSSELp 🧪 Photo by Graf & Cummings

TBT. Way back in November 2010, the Mussel of the Month was Megalonaias nervosa! — musselpdb.org/motm/2010/10... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪 Photo by Graf & Cummings

TBT. Back in November 2015, the Mussel of the Month was Nephritica poeyana! — musselpdb.org/motm/2015/15... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪 Photo by Graf & Cummings

TBT. Back in November 2020, the Mussel of the Month was Atlanticoncha ochracea! — musselpdb.org/motm/2020/20... #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp 🧪 Photo by Graf & Cummings

The November 2025 Mussel of the Month is Schistodesmus xinyuensis! — musselpdb.org, musselproject.substack.com #MusselOfTheMonth #MUSSELp 🧪 Photo by Graf & Cummings

Way back in October 2010, the Mussel of the Month was Recidens sumatrensis (except we called in R. lingulatus)! — musselpdb.org/motm/2010/10... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪 Photo by Graf & Cummings

Check out the latest episode of The Whoo! from the MUSSEL Project! KSC & DLG discuss their new book, Freshwater Mussels of Central America by Cummings, Graf, Pfeiffer & Tiemann. www.youtube.com/watch?v=Qf8D... #MUSSELp 🧪

Back in October 2015, the Mussel of the Month was Lepidodesma languilati! — musselpdb.org/motm/2015/15... #MusselMemory #ThrowbackThursday #MusselOfTheMonth #MUSSELp 🧪 Photo by Graf & Cummings

#MusselMemory #ThrowbackThursday Back in October 2020, the #MUSSELp #MusselOfTheMonth was Bineurus mouhotii! — musselpdb.org/motm/2020/20... 🧪 Photo by Graf & Cummings

The October 2025 #MUSSELp #MusselOfTheMonth is Anodontites lurulenta from Central America! — musselpdb.org, musselproject.substack.com 🧪 Photo by Graf & Cummings

#MusselMemory #ThrowbackThursday Way back in September 2010, the #MUSSELp #MusselOfTheMonth was Hemistena lata! — musselpdb.org/motm/2010/10... 🧪 Photo by Graf & Cummings

#MusselMemory #ThrowbackThursday Back in September 2015, the #MUSSELp #MusselOfTheMonth was Venustaconcha ellipsiformis! — musselpdb.org/motm/2015/15... 🧪 Photo by Graf & Cummings

#MusselMemory #ThrowbackThursday Back in September 2020, the #MUSSELp #MusselOfTheMonth was Diplodon paranensis! — musselpdb.org/motm/2020/20... 🧪 Photo by Graf & Cummings

The September 2025 #MUSSELp #MusselOfTheMonth is Ortmanniana pectorosa! — musselpdb.org, musselproject.substack.com 🧪 Photo by Graf & Cummings

#MusselMemory #ThrowbackThursday Way back in August 2010, the #MUSSELp #MusselOfTheMonth was Anodontites crispata! — mussel-project.uwsp.edu/motm/2010/10... 🧪 Photo by Graf & Cummings

#MusselMemory #ThrowbackThursday Back in August 2015, the #MUSSELp #MusselOfTheMonth was Lens contradens! — mussel-project.uwsp.edu/motm/2015/15... 🧪 Photo by Graf & Cummings

#MusselMemory #ThrowbackThursday Back in August 2020, the #MUSSELp #MusselOfTheMonth was Popenaias berezai! — mussel-project.uwsp.edu/motm/2020/20... 🧪 Photo by Graf & Cummings

The August 2025 #MUSSELp #MusselOfTheMonth is Pustulosa nodulata! — mussel-project.uwsp.edu/motm/2025/25..., musselproject.substack.com 🧪 Photo by Graf & Cummings

#ThrowbackThursday Way back in July 2010, the #MUSSELp #MusselOfTheMonth was Coelatura lobensis! — mussel-project.uwsp.edu/motm/2010/10... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in July 2015, the #MUSSELp #MusselOfTheMonth was Actinonaias sapotalensis! — mussel-project.uwsp.edu/motm/2015/15... 🧪 BacPhoto by Graf & Cummings

#ThrowbackThursday Back in July 2020, the #MUSSELp #MusselOfTheMonth was Trapezoideus foliaceus! — mussel-project.uwsp.edu/motm/2020/20... 🧪 Photo by Graf & Cummings

The July 2025 #MUSSELp #MusselOfTheMonth is Alathyria pertexta! You can read about it while it still goes by that name. — mussel-project.uwsp.edu/motm/2025/25..., musselproject.substack.com 🧪 Photo by Graf & Cummings

#ThrowbackThursday Way back in June 2010, the #MUSSELp #MusselOfTheMonth was Arcidopsis footei! — mussel-project.uwsp.edu/motm/2010/10... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Way back in June 2015, the #MUSSELp #MusselOfTheMonth was Grandidieria burtoni! — mussel-project.uwsp.edu/motm/2015/15... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in June 2020, the #MUSSELp #MusselOfTheMonth was Beringiana beringiana! — mussel-project.uwsp.edu/motm/2020/20... 🧪 Photo by Graf & Cummings

The June 2025 #MUSSELp #MusselOfTheMonth is Lasmigona costata! — mussel-project.uwsp.edu/motm/2025/25..., musselproject.substack.com 🧪

#ThrowbackThursday Back in May 2005, the #MUSSELp #MusselOfTheMonth was Hamiota perovalis! — mussel-project.uwsp.edu/motm/2005/05... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in May 2010, the #MUSSELp #MusselOfTheMonth was Obliquaria reflexa! — mussel-project.uwsp.edu/motm/2010/10... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in May 2015, the #MUSSELp #MusselOfTheMonth was Anemina fluminea! — mussel-project.uwsp.edu/motm/2015/15... Photo by Graf &

#ThrowbackThursday Back in May 2020, the #MUSSELp #MusselOfTheMonth was Leoparreysia tavoyensis! — mussel-project.uwsp.edu/motm/2020/20... 🧪 (At the time, the shell in the picture went by Leoparreysia bhamoensis, but the taxonomy has since been revised.) Photo by Graf & Cummings

The May 2025 #MUSSELp #MusselOfTheMonth is Assamnaia involuta! — mussel-project.uwsp.edu/motm/2025/25..., musselproject.substack.com 🧪 Photo by Graf & Cummings

#ThrowbackThursday Way back in April 2010, the #MUSSELp #MusselOfTheMonth was Bartlettia stefanensis! — mussel-project.uwsp.edu/motm/2010/10... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in April 2015, the #MUSSELp #MusselOfTheMonth was Physunio superbus! — mussel-project.uwsp.edu/motm/2015/15... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in April 2020, the #MUSSELp #MusselOfTheMonth wasn't even a mussel. It was Pidisium amnicum! — mussel-project.uwsp.edu/motm/2020/20... 🧪 Photo by Graf & Cummings

The April 2025 #MUSSELp #MusselOfTheMonth is Neotrigonia bednalli! — mussel-project.uwsp.edu/motm/2025/25..., musselproject.substack.com 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in March 2015, the #MUSSELp #MusselOfTheMonth was Alathyria jacksoni! — mussel-project.uwsp.edu/motm/2015/15... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in March 2020, the #MUSSELp #MusselOfTheMonth was Indonaia caerulea! — mussel-project.uwsp.edu/motm/2020/20... 🧪 Photo by Graf & Cummings

The March 2025 #MUSSELp #MusselOfTheMonth is Margaritifera falcata! — mussel-project.uwsp.edu/motm/2025/25..., musselproject.substack.com 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in February 2010, the #MUSSELp #MusselOfTheMonth was Pseudobaphia biesiana! — mussel-project.uwsp.edu/motm/2010/10... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in February 2015, the #MUSSELp #MusselOfTheMonth was Mulleria rivoli! (except back then, we called it Acostaea rivoli) — mussel-project.uwsp.edu/motm/2015/15... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Back in February 2020, the #MUSSELp #MusselOfTheMonth wasn't even a freshwater mussel. It was Monodacna colorata: a cardiid for Valentine's Day! — mussel-project.uwsp.edu/motm/2020/20... 🧪 Photo by Graf & Cummings

The February 2025 #MUSSELp #MusselOfTheMonth is Simpsonasus nankingensis! 🧪

#ThrowbackThursday Way back in January 2010, the #MUSSELp #MusselOfTheMonth was Ortmanniana ligamentina! (except back then, it was classified as a species of Actinonaias) — mussel-project.uwsp.edu/motm/2010/10... 🧪 Photo by Graf & Cummings

#ThrowbackThursday Way back in January 2015, the #MUSSELp #MusselOfTheMonth was Toxolasma lividum! — mussel-project.uwsp.edu/motm/2015/15... Photo by Graf & Cummings. 🧪

#ThrowbackThursday Back in January 2020, the #MUSSELp #MusselOfTheMonth was Utterbackiana suborbiculata! — mussel-project.uwsp.edu/motm/2020/20...

The #MUSSELp is trying things out at musselproject.substack.com