- Acanthocyclops
vernalis is often confused for A. robustus. Three
main distinctions are in the genital segement, endopite 1 of
the fourth endopod, and the forked rami. The genital segement
of A. vernalis is
pointed. On A. vernalis, the first segment of the endopod of the
fourth leg is as long as it is wide with a smooth inner edge. Finally,
at the base of caudal rami, A. vernalis has no extra growth.
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