From Field Data to Practical Knowledge: Investigating the Bioecology of the Oak Lace Bug—An Invasive Insect Species in Europe

SIMPLE SUMMARY: In a world filled with diverse ecosystems, understanding the behaviour of invasive species is crucial for maintaining balance and health. This study delves into the bioecology of the invasive oak lace bug in Europe, shedding light on its life cycle through a degree day-based model and presenting insights gathered from field-based life tables. Our research addresses key knowledge gaps, offering valuable information for effective pest control in forest ecosystems. By bridging the gap between scientific exploration and practical implications, we aim to empower the public with accessible knowledge on how to protect European forests and maintain the delicate equilibrium of natural environments. ABSTRACT: Corythucha arcuata, commonly known as the oak lace bug (OLB), is an insect species originally native to North America that has become an invasive species of significant concern in Europe. This invasive pest has been observed in various European countries, raising concerns about its impact on forest ecosystems. In 2015, it was first documented in Romania, further highlighting the need for research on its bioecology and life cycle. This study investigated the bioecology of the OLB in the southern region of Romania, focusing on its life cycle, development, and population dynamics. The results indicated that the OLB has three generations per year and overwinters in the adult stage in sheltered locations. Temperature significantly influenced the timing of egg hatching, nymph appearance, and adult development, with variation observed between generations. Additionally, a life table analysis provided insights into the population dynamics of the OLB in its natural environment, revealing variation in egg laying trends across generations. This research contributes to a better understanding of the OLB’s bioecology and provides essential data for forest managers developing science-based management strategies to mitigate its impact. By elucidating the life cycle and development patterns of the OLB in southern Romania, this study aids in the development of predictive models and life tables tailored to the region. These findings empower forest managers with the knowledge needed to make informed decisions for effective OLB management, ultimately preserving the health of forest ecosystems.