Epithemia smithii Carruthers

Length: 94.5

Width: 28

Striae: 8-9

Costae: 2

Collection 1776

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Authority information

Epithemia smithii Carruthers 1864 (Patrick and Reimer 1975).

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The image of this specimen was captured using DIC.

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The dorsal margin of the valve is strongly convex; the ventral margin is slightly concave. Ends are rounded, protracted, and occasionally slightly truncate and slightly recurved. (Patrick and Reimer 1975).

Ecological & geographical distribution

Found in fresh or brackish water. The fresh water habitat of Lake Michigan has relatively low conductivity. (Patrick and Reimer 1975).

Size ranges and morphology

  • Length is 30 to 73 micrometers (Patrick and Reimer 1975).
  • Width is 9 to 18 micrometers (Patrick and Reimer 1975).
  • Costae are 2 to 4 in 10 micrometers (Patrick and Reimer 1975).