Epigean
Guides
Bidessini
Bidessini is a tribe of predaceous diving beetles within the family Dytiscidae, comprising at least 40 genera and over 630 described species. Members are small to minute aquatic beetles found across diverse freshwater habitats worldwide, with notable radiations in Australia, South America, and Madagascar. The tribe includes both surface-dwelling (epigean) and subterranean (stygobitic) species, with several genera exhibiting convergent adaptations to groundwater environments.
Caecidotea kenki
Caecidotea kenki is a spring-dwelling asellid isopod found in the eastern United States. Originally described as Asellus kenki by Bowman in 1967, it is one of only three asellid species in Maryland habitually associated with springs rather than subterranean caves. It is distinguished from the six obligate cave-dwelling Caecidotea species in the region by its surface water habitat preference.