Species Identification Confidence:
I'm absolutely certain
Museum or Herbarium Specimen
Identified by Frest as Valvata sincera sincera. Recent dead and long-dead specimens. Dip net collection. Collectors: Frest and Edward Johannes.
Decimal Degrees: 42.6,-113.4
Reservoir with poorly oxygenated mud offshore; sand and gravel near shore. Depth 40". Abundant macrophytes such as Potamogeton crispus, P. pectinatus, Ceratophyllum; some epiphytic algae on macrophytes. Thin-stemmed macrophytes up to 8' or more in length.
Game Management Unit:
September 26, 1992 (All day)
Unpublished agency report