Lake-inhabitant
Guides
Chaoborus trivittatus
phantom midge
Chaoborus trivittatus is a species of phantom midge, a non-biting fly in the family Chaoboridae. The larvae are aquatic predators in lake ecosystems, notable for their diel vertical migration between deep daytime refuges and surface feeding zones. Unlike the congeneric C. americanus, C. trivittatus has a two-year life cycle with extended fourth-instar development. Adults are short-lived and non-feeding.
Glaenocorisa propinqua
Glaenocorisa propinqua is a water boatman species (family Corixidae) found in lakes across Europe, Northern Asia (excluding China), and North America. Its abundance and distribution are strongly influenced by fish predation pressure, which primarily targets larvae. The species preys upon the water flea Holopedium gibberum, placing it as both predator and prey in lacustrine food webs.