What kind of insect is this? It just flew in front of me and scared me. I live in Xining and it is July 1, 2012.

Insecta, Coleoptera, Branchillidae

The adult male is 27 mm long and 13 mm wide; the female is 26 mm long and 13 mm wide . Oblong, dark brown or russet. The head is small, dark brown, with large dots and wrinkles on the surface, and densely covered with light brown hairs. The base of the lip is rectangular, the outer edge is turned upward, the center of the front edge is slightly sunken inward, and the surface is densely covered with white stinging hairs. The center of the forehead is slightly wider; the back of the head is smoother, with short white hairs and longer brown hairs on both sides. The antennae have 10 segments, the male rod is 7 segments larger, and the female rod is 6 segments smaller. The compound eyes are well developed, spherical, and dark brown. The pronotum is black, with a horizontal width equal to twice the vertical length. The center of each edge stretches outwards, and there are shallow and dense irregular engraved spots and yellow-white fine hairs on the surface. The small scute is triangular, with a concave front edge, black, and densely covered with short white hairs on both sides. The elytra are brown, densely covered with irregular white or yellow scaly hairs, which are cloud-like, so they are called cloud-spotted beetles. The middle and rear parts are slightly wider, and are about three times as long as the pronotum. There are rows of hairs on the outer edge, close to The inner edge line is raised longitudinally, and the base angle is raised. There are three unobvious longitudinal raised lines on it, and they are densely covered with engraved points. The hip plate is nearly triangular, with a blunt apex, and the surface is densely covered with fine dots and fine hairs. Yellow hairs grow densely on the chest and abdomen, while fine light brown hairs grow on the abdomen. The legs are brown, and the leg segments are covered with brown fine hairs; the male has 2 blunt teeth on the outside of the tibia of the forefoot, and the female has 3 sharp teeth, with 2 large and obvious spurs at the end, and fine hairs on the inside; there is a pair of claws at the apex of the tarsus. .

The eggs are milky white, oval, with a long diameter of 3.58mm and a short diameter of 2.27mm.

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