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Guide to Karayevia clevei

(Grunow) Bukht. 1999

Karayevia Clevei Guide
Credit: Marina Potapova
  1. Valves lanceolate
  2. Striae more dense on raphe valve than on rapheless valve
  3. Striae on rapheless valve coarsely punctate, parallel
  4. Striae on raphe valve radiate

The raphe valve has a narrowly lanceolate axial area and no distinct central area. Striae on the raphe valve are radiate, 18-24 in 10 µm; shortened marginal striae are often present. The rapheless valve has a narrow linear axial area and no central area. Striae on the rapheless valve are coarsely punctate, parallel in the center and slightly radiate at apices.