Elaphrus (Elaphrus) ruscarius Say 1830
Geographic: NEA
Distribution: Native, New World. Canada – ON, PQ; USA – AL, AR, CT, DC, DE, FL, GA,
IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NH, NJ, NY, OH, PA, RI, SC,
TN, TX, VA, VT, WI, WV.
Common name: Say’s Marsh and Bog beetle
Synonyms: Elaphrus ruscarius Say, 1830: (1) [3]
Elaphrus texanus Casey, 1924:17
Macrohabitat: Lowlands to midlands, 15 – 1219 meters altitude, on wet beaches
of many kinds of water bodies. Microhabitat: Adults are ground-dwelling and occur
close to water on clay, sand, silt, and organic substrates in swamps, along rivers and ditches,
tire tracks, and around beaver ponds. Dispersal abilities: Macropterous, capable of flight;
swift runners. Seasonal occurrence: Adults have been found in March – September; teneral
adults in the springtime; probably a spring breeder. Behavior: Adults are diurnal, predaceous,
and take cover under shoreline debris or stones.