BAETIS OCHRIS, A NEW SYNONYM OF BAETIS-FLAVISTRIGA (EPHEMEROPTERA, BAETIDAE)

A comparative study of the reared larva of Baetis ochris led to the discovery that its larva is symmorphic with the larva of Baetis flavistriga. Adult characters used to separate Baetis ochris from other Baetis species have been demonstrated to be variable and do not generally constitute substantiating species characters within the Baetis fuscatus species group. Baetis ochris is placed as a junior subjective synonym of Baetis flavistriga.