Chunxiangus shii gen. et sp. nov., a new genus and species of Umenocoleidae (Dictyoptera) from mid-Cretaceous Kachin amber

Umenocoleidae is a mysterious and extinct Mesozoic beetle-like roach family.Its systematic position was highly disputed for decades.In this study, a new genus and species of Umenocoleidae, Chunxiangus shii gen.et sp.nov., is described based on a well-preserved adult from mid-Cretaceous Kachin amber of northern Myanmar.The new genus mainly differs from the other genera in the ratio of the width of the head and pronotum, anterior margin of pronotum round and posterior margin slightly convex, pronotum and head without distinct cup-shaped punctures, and covered with dense short setae, the forewing veins reduced and without distinct colour pattern.The presence of the cup-shaped punctures on the forewings but the absence of the distinct cupshaped punctures on the head and pronotum may be the autapomorphy of Chunxiangus gen.nov.