Home
Vertebrates
All
Amphibians
Birds
Fish
Mammals
Reptiles
Reptiles and Amphibians
Sharks and Rays
Insects
All
Ants
Beetles
Bees
Butterflies
Cicadas
Damselflies
Dragonflies
Dragonflies and Damselflies
Fleas
Flies (Diptera)
Grasshoppers and Crickets
Hornets and Wasps
Katydids
Mosquitoes
Moths
Planthoppers
Robber Flies
Sawflies, Horntails, Wood Wasps
Scale Insects
Stoneflies
Tiger Beetles
Treehoppers
True Bugs (Hemiptera)
Other Invertebrates
Amphipods
Bivalves - Freshwater
Bivalves - Saltwater
Crabs, Lobsters, and Shrimp
Crayfish
Earthworms
Gastropods
Harvestmen
Isopods
Jellyfish
Nematodes
Proturans
Sea Urchins
Spiders
Springtails
Ticks
Plants
Browse by family
Aster Family
Bryophytes
Carnivorous Plants
Clubmosses, Quillworts, Spikemosses
Ferns
Grasses
Iris Family
Milkweed Family
Mosses
Orchids
Pea Family
Rose Family
Sedges and Rushes
Fungi/Other
Algae - Freshwater
Algae - Marine Macroalgae
Algae - Marine Microalgae
Fungi - All
Fungi - Browse by family
Fungi - Ascomycota
Fungi - Basidiomycota
Lichens
Slime Molds
Explore
Bibliography
Maryland Quad Map
Maryland Quad Heat Map
Top 100 Contributors by Species
Top 100 Contributors by Species (2022)
Top 100 Contributors by Records
New Stuff Report (this month)
iNaturalist Integration Summary
MBP Brochure
Partnerships
Editors
Photographers
Other Contributors
Get Involved
FAQs
About Records
Dedication
Links
MBP on Facebook
MBP on Twitter
MBP on Instagram
MBP project at iNaturalist
Share photos on Flickr
MBP at Amazon Smile
MBP Google Group
Maryland Plant Atlas
MD/DCRC Resources
Stewart and Robbins (1958)
eBird
Sites
Andelot Farm
Chino Farms
Dans Rock Bird Count
Fort Smallwood Park
Horn Point Laboratory
Howard County Conservancy
Jemicy School
Rocky Gap State Park
Turkey Point Bird Count
Weinberg Park
Maryland Checklist - Family: Pisidiidae - all-time (Total: 20)
Filter by tag...
Show All
Adventive
\n
Coastal Plain only
\n
Endangered (Federal)
\n
Endangered (MD)
\n
Excluded
\n
Exotic
\n
Extinct
\n
Extirpated
\n
Extralimital
\n
G1 (Highly globally rare)
\n
G1G2 (Highly globally rare)
\n
G2 (Globally rare)
\n
G2G3 (Globally rare)
\n
G3 (Globally rare/local)
\n
G3G4 (Globally vulnerable)
\n
G4
\n
G4G5
\n
G5
\n
Garrett only
\n
GH (No known extant occurrences)
\n
GU (Global status uncertain)
\n
Hybrid
\n
In need of conservation
\n
Invasive
\n
Nativity Uncertain
\n
Non-native
\n
Reviewable (MD/DCRC)
\n
S1 (Highly state rare)
\n
S1B (Highly state rare breeder)
\n
S1M (State rare migrant)
\n
S1N (State rare non-breeder)
\n
S1S2 (Highly state rare)
\n
S1S2B (State rare breeder)
\n
S2 (State rare)
\n
S2B (State rare breeder)
\n
S2B (State rare breeder)
\n
S2S3 (State rare)
\n
S2S3B (State rare breeder)
\n
S3 (Watch list)
\n
S3B (State watchlist breeder)
\n
S3S4
\n
S3S4B (State watchlist breeder)
\n
S4SE
\n
SH (Historical)
\n
SHB (State historical breeder)
\n
SR (State rare)
\n
Status Uncertain
\n
SUB (Status uncertain breeder)
\n
SXB (State extirpated breeder)
\n
SXM (State extirpated migrant)
\n
Threatened (Federal)
\n
Threatened (MD)
\n
Undescribed
\n
Vulnerable
\n
Waif
\n
Western MD only
\n
Worcester only
\n
Photos
Common Name
Genus
Species
Records
Category
Family
Order
Class
Kingdom
1
Adam Peaclam
Pisidium
adamsi
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
2
Rusty Peaclam
Pisidium
ferrugineum
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
3
Perforated Peaclam
Pisidium
punctatum
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
4
Round Peaclam
Pisidium
equilaterale
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
5
Striated Fingernailclam
Sphaerium
striatinum
1
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
6
River Fingernailclam
Sphaerium
fabale
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
7
Pond Fingernailclam
Musculium
securis
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
8
Triangular Peaclam
Pisidium
variable
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
9
Greater Eastern Peaclam
Pisidium
dubium
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
10
Lake Fingernailclam
Musculium
lacustre
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
11
Ubiquitous Peaclam
Pisidium
casertanum
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
12
Lilljeborg Peaclam
Pisidium
lilljeborgi
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
13
Shiny Peaclam
Pisidium
nitidum
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
14
River Peaclam
Pisidium
fallax
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
15
Grooved Fingernailclam
Sphaerium
simile
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
16
Herrington Fingernailclam
Sphaerium
occidnetale
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
17
Long Fingernailclam
Musculium
transversum
1
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
18
Walker Peaclam
Pisidium
walkeri
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
19
Ridged-beak Peaclam
Pisidium
compressum
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
20
Swamp Fingernailclam
Musculium
partumeium
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
View Bibliography
