Grishanin, A.K., E.M. Rasch, S.I. Dodson and G.A. Wyngaard. Variability in genetic architecture of the cryptic species complex of Acanthocyclops vernalis (Copepoda) I. Evidence from karyotypes, genome size, and ribosomal DNA sequences. Journal of Crustacean Biology 25(3): 373 – 383.