D3288: Seasonal population patterns of crape myrtle bark scale (Acanthococcus lagerstroemiae) in Clemson, South Carolina

Crape myrtle bark scale (Acanthococcus lagerstroemiae; CMBS) is an invasive pest that poses a threat to crape myrtles (Lagerstroemia spp.), a popular ornamental species widely used in landscapes across the southern and eastern United States. Since its initial detection in Texas in 2004, CMBS has spread to at least 14 other states across the Southeast. Recent research has investigated CMBS population patterns in parts of the southern US, but we do not have a full picture of these patterns across the entirety of their range. Here we present preliminary data identifying seasonal population patterns of CMBS in Clemson, South Carolina. To monitor these populations and identify activity peaks, we used double-sided sticky tape on 30 infested crape myrtles and recorded the abundance of different life stages of CMBS throughout the year. Identifying peak periods for early instar emergence allow us to develop more effective, seasonally timed pest management methods. Looking ahead, our research will focus on evaluating the efficacy of green lacewings (Chrysoperla rufilabris) as a biological control agent against CMBS. Field trials will be conducted to assess the potential of using green lacewing eggs and larvae for managing CMBS populations. This future work aims to integrate biological control into a broader pest management strategy, providing an alternative to chemical treatments in urban and suburban landscapes where chemical control is limited or undesirable.