From your picture, this insect is Eupolyphaga, specifically the male of Eupolyphaga. The male of Eupolyphaga has wings and the female has no wings. It belongs to a kind of cockroach. Its body shape is flat, with a length of 1. 3 ~ 3 cm and a width of 1. 2 ~ 2.4 cm. Its front end is narrow and its back end is wide, and its back is purple-brown, shiny and wingless. The front chest backboard is developed to cover the head; The ventral dorsal plate has 9 segments and is arranged in a shingle shape. The abdomen is reddish brown, the head is small, and there are 1 pair of filiform antennae.

Eupolyphaga is afraid of sunshine, lurking in the daytime and active at night.