Adult Masked Chafer (IMAGE) Entomological Society of America Caption Adult masked chafers are small brown beetles (10-15 mm long depending on the species) with a distinctive black stripe or mask across the eyes and face. The one shown here (Cyclocephala pasadenae) is common in the southwestern United States from Texas, western Kansas, and Oklahoma to southern California. Credit D.C. Lightfoot Usage Restrictions Credit D.C. Lightfoot. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.