Abstract

New ecological, distributional, behavioral, and host-association data are presented for 156 species and subspecies of longhorned beetles (Coleoptera: Cerambycidae) from Arizona, California, Connecticut, Florida, Illinois, Iowa, Kansas, Michigan, Missouri, Oklahoma, Nebraska, New Mexico, North Carolina, and Texas. Detailed observations reveal extended developmental plasticity in Eupogonius pauper LeConte, variable pre-pupal behavior in Lagocheirus araneiformis stroheckeri Dillon, new girdling and oviposition hosts for Oncideres cingulata cingulata (Say) and Oncideres rhodosticta Bates, the importance of Heracleum maximum W. Bartram as an early-summer floral resource, and report northward range extensions in three cerambycid species — Leptostylus cretatellus Bates, Lypsimena fuscata Haldeman and Polymitoleiopus sandersoni (Gilmour) — potentially associated with climate change. Atrypanius irrorellus Bates is recorded for the first time from the United States. A review of BugGuide and iNaturalist records yielded four new state records for Missouri and 13 for Texas, underscoring the value of citizen-science data when coupled with expert verification. Predators of cerambycid larvae are newly documented from Cleridae: Chariessa vestita (Chevrolat), Enoclerus quadrisignatus (Say), Monophylla pallipes (Schaeffer), Pelonides humeralis (Horn); Trogossitidae: Temnoscheila acuta (LeConte); and Aves (Picidae).