About raising of the status of the subfamily Eremazinae (Coleoptera: Scarabaeoidea: Scarabaeidae) with description of new taxa from the Mesozoic in China
<i>Yixianscarabaeus</i> gen. n. with 2 new species <i>Y. sulcatus</i> sp. n. (type species) and <i>Y. tenuestriatus</i> sp. n. from the Yixian Formation of China are described. This genus can be attributed to the family Eremazidae stat. n. based on the posteriorly open procoxal cavity. Diagnosis of the genus: mandibles not produced beyond apex of clypeus; eye partly divided by genal lobe; apex of pronotum with leathery border; posteriorly open procoxal cavity with a clearly visible trochantin; mesocoxae contiguous, positioned at an right angle; meso- and possible metatibia with 2 transverse carinae on external surface; meso- and metatibial spurs are contiguous. Yixianscarabaeinae subfam. n. for this genus is proposed.