Identifying mealybug species is often a challenge, but the hibiscus mealybug (Nipaecoccus viridis) turns green in an alkaline solution—a unique indicator among mealybug species in Florida. Researchers have turned this discovery into a safe, accessible field diagnostic kit to aid growers and IPM pros in slowing the spread of this invasive pest.
Producing offspring from multiple fathers can add much-needed genetic diversity to populations of invasive insects, which often arise from a small number of individuals. New research confirms such multiple paternity occurs in spotted lanternflies, though to what degree it aids their spread needs further study.
A new study evaluating pesticide effects on spongy moth egg masses shows the potential value in targeting the invasive pest in its dormant wintertime stage, before hungry larvae emerge.
The elm zigzag sawfly (Aproceros leucopoda) is now established in several places in North America. This non-native forest pest can be a threat to elm species and hybrids and is capable of large defoliation events. Will it turn into a full-blown invasive species, or simply co-exist with native herbivores in natural and urban forests? At this point, we don't know. A new review highlights elm zigzag sawfly biology, ecology, and management strategies in the U.S.
One of the best tools to detect emerald ash borer is a wasp that specializes in catching beetles. A new study compares the wasps' mix of prey with the mix of trees in nearby forests to estimate the wasp's foraging range—and thus determine where emerald ash borer may be present when the wasps are found with it.