摘要

A new genus Songius is established and two new species - Songius rugosus from Qixia Mountain and Laoshan Forest Park, Jiangsu, and Tiantangzhai, Dabie Mountain, Anhui, and Songius bicruris from Tiantangzhai - are described. A novel surface structure of the pygidial tergum was observed by scanning electron microscopy. The genus is established on the basis of the distinctive appearance of the modification of the surface structure of the pygidial tergum.