摘要
In the summer of 1979 we found some insect fossils in the drill cores near the River Wenyu, in the southwest of County Shunyi, Boijing. They were discovered in the silt clay of Xiadian Formation, lower Pleistocene.These insect fossils are of Asilldae (gen. et sp. indet.), Harpalidae (gen. et sp. indet.), Lyetidae (gen. et sp. indet.) and Melolonthinae, Subgen. Holotrichia Reitter. The latter is a new species of the subgenus Holotrichia (s. str.) under the name of Holotrichia (s. str.) beijingensis Wang sp. nov.. It has the same eharacteristics with subgenus Holotrichia as well as the modern Holotrichia (s. str.) szechuanensis in spite of some difference.
