The article, co-authored by John M. Heraty, examines the biological control wasp Neodusmetia sangwani, which was introduced to the United States to control the Rhodegrass mealybug, a pest that damages grasses. Researchers confirmed that the wasp has successfully established and persisted year-round in Southern California, despite earlier uncertainty about whether in survived after its release there is 1968.They also used DNA barcoding to compare California wasps with populations around the world and found several genetically different mitochondrial lineages.