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Guide to Plagiotropis lepidoptera var. proboscidea

(Cleve) Reimer in R.M.Patrick and Reimer 1975

Plagiotropis Lepidoptera V Prob Guide
Credit: Loren Bahls
  1. Valves medium
  2. Areolae very fine
  3. Striae parallel at valve center

Valves are lanceolate and less than 110 µm long. A prominent keel carrying the raphe runs along the apical axis. Striae are parallel in the middle, becoming radiate towards the apices. Areolae are very fine and number 26-30 in 10 µm.