Phenology and voltinism of the Asian longhorned beetle (Coleoptera: Cerambycidae) in South Carolina, United States.

This article focuses on the phenology and life cycle of the invasive Asian longhorned beetle (Anoplophora glabripennis Motschulsky) population recently discovered in Charleston County, South Carolina, the southernmost established population in North America. Over two years, researchers collected and analyzed over 1,000 specimens, using larval head capsule width to determine development stages and timing. Findings indicate that, unlike northern populations which typically have a 2–3 year life cycle, the South Carolina population exhibits a synchronous univoltine (one generation per year) life cycle, likely influenced by a winter developmental pause known as a pupal hold. This accelerated development in a warmer climate has important implications for management strategies, survey timing, and predictive modeling of this invasive species' spread and impact.