Blue-winged olive

Description

Baetis is a genus of mayflies of the family Baetidae, known as the blue-winged olive to anglers. There are at least 150 described species in Baetis. They are distributed worldwide, with the most variety in North America and northern Europe. Baetis is a genus of mayflies of the family Baetidae. It contains at least twelve species. Baetis is a genus of mayflies inthe family Baetidae, the most species - richof any genera in this family. Species of the genus Baetis constitute one of the components of aerial plankton. They are like all mayflies in decline, probably due to water and sediment pollution, but also due to degradation of the nocturnal environment by light pollution and possibly also due to the polarized light pollution, a growing phenomenon that can cause ecological sinks and ecological traps for species sensitive to polarization of light, including mayflies.