[2] It is found in interdunal swale habitats along a 25 kilometre stretch of shoreline in Sussex County, Delaware.

The main threats to this species include habitat loss due to coastal development, sea level rise, light pollution, and the lowering of groundwater aquifers.

This species has an estimated extent of occurrence of 33 km2, and the entire population occurs within one location, as the main threat (sea level rise) will probably impact all sites within the current known distribution by the end of the century.

Various historical collection sites no longer contain this species, and the occurrence locality thought to hold the largest number of individuals, has recently been lost to a housing development.

As such, this species is listed as Critically Endangered under criteria B1ab (i, ii, iii, iv, v).