Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 1 - 5
Comments: Known from only three vernal pools separated by about 300 meters at Seth Forest Demonstration Area, Talbot County, Maryland. The three pools may represent one EO given their close proximity. However, the beetle may be flightless (unique among vernal pool beetles), potentially limiting exchange between the two pools. Also, the species' life history and habitat requirements are too poorly known to be certain of the EO definition. Type locality was disturbed by bulldozing in 1982 to increase waterfowl use. Overstory trees in pool basin were logged out. Surrounding forest was also selectively logged and several years later nearby forest was clearcut and converted to loblolly pine. Species was subsequently not found during repeated surveys in 1982-1991 although it was commonly found prior to these disturbances as recently as 1980. During 1997, the species was rediscovered at the type locality and at another nearby, relatively undisturbed pool (pool no. 2) in 1997. This survey effort was part of an intensive inventory on the Delaware and Maryland portions of the Delmarva Peninsula. It was not found at 41 other sites during 1997 and 5 pools during 1998.