The egg, two larval instars (L1, 2) and pupa of Cafius nauticus (Fairmaire) are described for the first time. Detailed external structures of the mature larvae are re-described. The structural features of each instar are illustrated as well as the adults. Biological information including intra- and interspecific interactions and ecological preferences are recorded for the first time.

The termitophilous genus Discoxenus Wasmann, 1904 (Aleocharini: Compactopediina) is recorded from China for the first time and a new species from Guangdong is described under the name: Discoxenus shenzhenensis sp. nov.