Thanasimus trifasciatus (Say, 1825)

Chapman, Eric G., Leavengood, John M. & Dupuis, Julian R., 2025, The Cleridae and Thanerocleridae of eastern North America, with illustrated keys, updated distributions, and special emphasis on the Kentucky fauna, Zootaxa 5639 (1), pp. 1-88 : 67

Thanasimus trifasciatus (Say, 1825) ; Cleridae : Clerinae : Clerini

Illustrations: Plate 5-F. Key to clerid genera, couplet 14-A, couplet 15-B, couplet 16-B, E; Thanasimus key, couplet 1

Distribution: MD to NB to MN to WV. Uncommonly collected.

- Recorded from: MD, ME, MN, NY, PA, VT, WI, WV, New Brunswick, Ontario, and Quebec ( Hopkins 1893a, b; Wolcott 1947; Papp 1960; Downie & Arnett 1996; Mawdsley 1999; Gandhi et al. 2009; Bousquet et al. 2013; Webster et al. 2016; Digirolomo et al. 2021; BugGuide).

Natural History: Bøving & Champlain (1920) reported that adults and larvae can be found in numbers in cells at the bases of spruce ( Picea ) trees killed by Dendroctonus in Michigan and has been reared from white pine ( Pinus strobus ) in Pennsylvania. Knull (1951) added that it can be found in dead pines ( Pinus ) killed by bark beetle infestations. Mawdsley (1999) reported that adults are most frequently collected from mature eastern white pine ( Pinus strobus ) or red spruce ( Picea rubens ) and is rare in collections.