A common characteristic behavior of beetles in Anomala is that most grubs of these species feed on the roots of grasses, becoming a pest in many areas where they invade. One notable species is the Oriental beetle (Anomala orientalis), which was introduced to North America and has since become a major pest in several mid-Atlantic states.
^Zhao, Ming-Zhi; Zorn, Carsten (2022). "Contribution to the genus Anomala Samouelle, 1819 (Coleoptera: Scarabaeidae: Rutelinae) of China and adjacent regions. Part II: six new species from Taiwan and Hainan". Zootaxa. 5168 (2): 175–195. doi:10.11646/ZOOTAXA.5168.2.5. PMID36101291. S2CID250962875.