Exploring the relationship of Homalosilpha and Mimosilpha (Blattodea, Blattidae, Blattinae) from a morphological and molecular perspective, including a description of four new species.

This study utilized six genes (12S, 16S, 18S, 28S, COII and H3) from a total of 40 samples to construct maximum likelihood (ML) and Bayesian inference (BI) phylogenetic trees in order to infer the relationships between the morphologically similar genera Homalosilpha Stål, 1874 and Mimosilpha Bey-Bienko, 1957. The phylogenetic analysis showed the two genera have a close relationship and were recovered as sister groups based on ML and BI analyses. Four new species are described among these samples, i.e., Homalosilpha obtusangula sp. nov., Homalosilpha recta sp. nov., Homalosilpha alba sp. nov. and Homalosilpha clavellata sp. nov. based on morphological and COI data. A key to the worldwide Homalosilpha is provided.

A new genus and a new species in the subfamily Polyzosteriinae (Blattodea, Blattidae) from China.

Laevifaciesquadrialata gen. et sp. nov. is described from Hainan Province, China based on morphological data. COI data (DNA barcodes) is utilized to confirm the sexual dimorphism occurring in Laevifaciesquadrialata gen. et sp. nov. Melanozosterianitida Brunner von Wattenwyl, 1865, is reported from Guangxi Province, China. A key to the Chinese Polyzosteriinae is provided.