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Pizzini's Amphipod (Stygobromus pizzinii), one of two species of Virginia State Rare subterranean amphipods found at GWMP. - Photo by Brent Steury |
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Six species of amphipod and one species of Caecidotea isopod have been documented from GWMP. One of the amphipods found within GWMP is a species new to science, currently known as Stygobromus sp. 15, until it is given a species epithet. The other five species of amphipods known from GWMP are Crangonyx shoemakeri, Gammarus fasciatus, Gammarus minus, Stygobromus pizzinii, and Stygobromus tenuis. A total of 20 species of copepod have been identified from Great Falls Park, Virginia. One of these copepods, Acanthocyclops einslei, is known in the State of Virginia only from Great Falls Park. A Grass Shrimp (Palaemonetes sp.) is occasionally found in Dyke Marsh. The only crayfish currently documented from GWMP are a non-native species, the Red Swamp Crayfish (Procambarus clarkii) and a native species, the Devil Crayfish (Cambarus diogenes).
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