mapmap| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | East Edsall Road, Fairfax County, Virginia, USA | 2406map | Mar-Aug, 1973 | type locality | freshwater | 80 specimens were collected from a spring on East Edsall Road, Fairfax County, Virginia, close to the Alexandria city line. Also S. subtilis. | Kenk R (1977): 12, 16 | ||
| B | East Edsall Road, Fairfax County, Virginia, USA | 2406map | May 23, 1965 | type locality | freshwater | 2 specimens, both mature, were collected first by Dr. J.R. Holsinger. | Kenk R (1977): 16 |