Specimen Information

Bythotrephes longimanus
Bythotrephes longimanus
(spiny waterflea)
Crustaceans-Cladocerans
Exotic

Specimen ID1886710
GroupCrustaceans-Cladocerans
GenusBythotrephes
Specieslongimanus
Common Namespiny waterflea
StateVT
CountyChittenden
LocalityLake Champlain
Mapping AccuracyAccurate
HUC8 NameLake Champlain
HUC8 Number04300108
HUC10 NameLake Champlain
HUC10 Number0430010816
HUC12 NameLake Champlain
HUC12 Number043001081604
Map
Collection Day26
Collection Month8
Collection Year2025
Year AccuracyActual
Potential Pathwayhitch hiker
CommentsPhysical specimens are available if needed for verification. Images below are at 150x magnification showing key anatomical features, but are not ideal as there are multiple specimens on the slide.
Record TypeNAS sighting report
VerifierMelanie Giangreco
Freshwater/MarineFreshwater
Photo
Bythotrephes longimanus
Bythotrephes longimanus


Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/4/2026].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.