What are the living habits of the black gill beetle?

Scarab occurs once a year 1 generation, and overwinters as the 3rd instar mature larva. The adult stage is from late May to early September in Nanjing (the peak period is mid-June). Xuzhou from early May to early September; Beijing runs from early June to late August. Fuzhou, Fujian and Nanchang, Jiangxi are also distributed. This insect is widely distributed and often occurs in large quantities. It is one of the important underground pests in the Yangtze River basin and the northern dry land area.