Two new species of the genus Ennearthron Mellié, 1847 (Coleoptera: Ciidae) from Yunnan Province, China.

Ennearthron acuticornum sp. nov. and Ennearthron jizushanense sp.

The first record of the genus Kawanabe, 1994 (Coleoptera, Ciidae) from China, with the description of a new species and its larva.

The genus Kawanabe, 1994 is newly recorded from China, and a new species, and its larva, is described and illustrated from Guangdong Province. We provide habitat and host fungi photos of the new species and a key to all described species of the genus.

Study on Proportioning Scheme of Coal System Rocky Similar Material Based on Orthogonal Test.

Similar materials play an important role in model testing. In order to meet the demand for similar materials in modeling tests, such as those on coal mining, coal system rocky similar materials were formulated using yellow sand as a coarse aggregate, heavy calcium carbonate as a fine aggregate, and cement and gypsum as binders. Based on the orthogonal experimental design method, four influencing factors, namely the aggregate-binder ratio, heavy calcium carbonate content, cement-gypsum ratio, and moisture content, were selected.

Two new species of the tribe Xylographellini (Coleoptera: Ciidae) from Yunnan Province, China.

Two new species of the tribe Xylographellini, Syncosmetus wuliangensis sp. nov. and Scolytocis multispinus sp.