New and little known Agraeciini species from Hainan, China (Orthoptera: Ensifera: Tettigoniidae: Conocephalinae: Agraeciini).

Agraeciini species from Hainan, China were investigated from 2017~2019. One new species, Nahlaksia hainanensis He Wang sp. nov., is described. Liara (Acanthocoryphus) brevis Ingrisch, 1998 and Mesagraecia gorochovi Ingrisch, 1998 are first recorded from Hainan, China. The COI genes of three species are provided and songs of L. (A.) brevis are first reported. The type species are deposited in Museum of Biology, East China Normal University (ECNU) and Shanghai Entomological Museum, Chinese Academy of Sciences (SEM, CAS).

An integrative taxonomy of Vescelia pieli pieli species complex based on morphology, genes and songs from China (Orthoptera: Grylloidea: Phalangopsidae: Phaloriinae).

There are nine species or subspecies belonging to genus Vescelia Stål, 1877 in the world, with two species distributed in China, V. pieli pieli and V. liangi. During 2018-2019, Vescelia spp. from Hainan, Guangdong and Fujian were systematically investigated. Here, we described two new species, Vescelia dulcis He sp. nov. and V. pieli monotonia He subsp. nov. The new species are similar to V. pieli pieli in morphology except for minute differences in the genitalia. But phylogenetic reconstruction and differences in songs support the validity of the new species. The type specimens are deposited in Museum of Biology, East China Normal University (ECNU).

New and little-known crickets from Southern Guangxi, China (Orthoptera: Grylloidea: Gryllidae: Phalangopsidae; Trigonidiidae).

The crickets from Southern Guangxi, China have been investigated from 2017-2019. Teleogryllus (Brachyteleogryllus) commodus and Lissotrachelus ferrugineonotatus are first reported from Guangxi. Two new species, Polionemobius marblus He sp. nov. and Ornebius panda He sp. nov., are described along with their calling songs. The COI genes of above species and Cacoplistes brevisparamerus, Gorochovius trinervus are provided. The type specimens are deposited in Museum of Biology, East China Normal University (ECNU).

A new species of the subgenus Duolandrevus (Eulandrevus) Kirby, 1906 from Guangxi, China (Orthoptera: Gryllidae: Landrevinae).

Seven species of the subgenus Duolandrevus (Eulandrevus) Kirby, 1906 have been recorded from China prior to this study. Their morphology is similar, and genitalia can be used for distinguishing different species in earlier research. We describe one new species, D. (E.) obsidianus He sp. nov. from Guangxi. The new species is similar to related species in gross morphology, but showed differences in genitalia with epiphallic lateral lobes bifurcated apically in right angle. The songs and COI genes are first compared in this study, and the results support the validity of the new species. The type specimens are deposited in Museum of Biology, East China Normal University (ECNU).