Synonyms and other taxonomic changes
Agonum placidum (Say, 1823)
Synonyms:
Feronia placida Say, 1823
Agonum morosum Dejean, 1828
Agonum alcyoneum Chaudoir, 1837
Agonum transpunctatus Bates, 1878
Agonum placidum amplior Casey, 1920
Agonum placidum aztecanum Casey, 1920
Agonum placidum citatum Casey, 1920
Agonum rhodeanum Casey, 1924
Identification
Black, at least partially with a metallic luster dorsally. Interval 3 with at least 5 non-foveate punctures.
Range
Widely distributed in North America: NF-BC to CA-GA & Mexico
(2)
State/Province Records: (2)
CAN: AB, BC, LB, MB, NB, NF, NS (CBI), ON, PE, QC, SK
USA: AR, AZ, CA, CO, CT, DC, DE, GA, IA, ID, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NY, OH, OR, PA, RI, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY
MEX: Oaxaca + ?
Habitat
Mostly nocturnal, under various forms of cover during the day. Found in open places, such as fields, vacant lots, pastures, grasslands, gardens, open forests, roadsides, and sand/gravel pits.
(3)Season
Can be found throughout the year. Mates in spring & overwinters as adults.
(3)Remarks
Has been collected by pitfall trapping, turning stones, sweeping & beating vegetation, light trapping, & turning drift debris.
(3)
