Notes on the genus Homogryllacris Liu, 2007 (Orthoptera: Gryllacrididae) with description of one new species from China.

This paper deals with five species of the genus Homogryllacris Liu, 2007 from China, including one new species, i.e. Homogryllacris nigromacula sp. nov. Morphological illustrations of most species and habitus of the new species are provided. Moreover, one geographical population of Homogryllacris yunnana Shi, Guo & Bian, 2012 and intraspecific variation of Homogryllacris platycis Liu & Bian, 2021 are discussed and illustrated. All specimens examined are deposited in the Museum of Hebei University.

One new species of the genus Ocellarnaca Gorochov, 2004 (Orthoptera: Gryllacrididae) from Yunnan, China.

This paper reports one new species of the genus Ocellarance Gorochov, 2004 from Yunnan, China, i.e. Ocellarnaca virida sp. nov. Diagnostic illustrations are provided. The type specimen is deposited in the Museum of Hebei University.

Phylogeography and Genetic Structure of the Bush Cricket Decma fissa (Orthoptera, Tettigoniidae) in Southern China.

Decma fissa is the most widely distributed species of the genus Decma occuring in southern China. This study presents the first phylogeographic work of D. fissa based on COI, Cytb and ITS sequence. We examined genetic diversity with ITS and mitochondrial sequence respectively, and phylogenetic work was based on the mitochondrial data. A high-level genetic diversity was revealed based on mitochondrial data but a low-level diversity was shown with ITS sequence. For the mitochondrial data, divergence time analysis displayed five lineages. Based on the Mantel test, geographic and genetic distances among D. fissa populations revealed a significant positive correlation. Bayesian skyline plot (BSP) analyses implied that none of three major lineages of D. fissa was seemingly affected by the last glacial maximum (LGM, 0.015-0.025 Mya). Ecological niche modeling was used to predict the distribution of D. fissa in four periods (LGM, Mid-Holocene, current and 2070) in China. Analysis of the ancestral area reconstruction indicated that D. fissa occurred in the South China area.

Two new species of the genus Homogryllacris (Orthoptera: Gryllacrididae) with the male of Homogryllacris irregularis Lu, Zhang & Bian, 2022 from Yunnan, China.

This paper reports two new species of the genus Homogryllacris Liu, 2007 from Yunnan, China. In addition, the male of Homogryllacris irregularis Lu, Zhang & Bian, 2022 is described for the first time.

Two new species of the genus Phlugiolopsis (Tettigoniidae: Meconematinae) and the male description of Phlugiolopsis circolobosis Bian, Shi & Chang, 2013 from Yunnan, China.

This paper reports two new species of the genus Phlugiolopsis from Yunnan, China, i.e. Phlugiolopsis furcicaudis sp. nov. and Phlugiolopsis breviproceris sp. nov., and describes the male of Phlugiolopsis circolobosis Bian, Shi & Chang, 2013 for the first time. Examined specimens are deposited in the Museum of Hebei University.

One new species of the genus Capnogryllacris Karny, 1937 (Orthoptera: Gryllacrididae) from China.

The paper reports a new species of the genus Capnogryllacris Karny, 1937 (Orthoptera: Gryllacrididae) from China, i.e. Capnogryllacris latilamargis sp. nov. The all specimens are deposited in the Museum of Hebei University, Baoding, China.

Two new species of the genus Ocellarnaca Gorochov, 2004 (Orthoptera: Gryllacrididae) from China.

The paper reports two new species of the genus Ocellarnaca Gorochov, 2004 (Orthoptera: Gryllacrididae) from China, i.e. Ocellarnaca longiprotubera sp. nov. and Ocellarnaca grossa sp. nov. The type specimens are deposited in the Museum of Hebei University, Baoding 071002, China.

Three new species of the genus Nigrimacula Shi, Bian & Zhou, 2016 (Orthoptera: Tettigoniidae: Meconematinae) from Yunnan, China.

This paper reports three new species of the genus Nigrimacula Shi, Bian & Zhou, 2016 from Yunnan, China, i.e. Nigrimacula biprotubera sp. nov., Nigrimacula trigona sp. nov. and Nigrimacula wuliangshanensis sp. nov. In addition, we supplement the male description of Nigrimacula inlobata Cui, Liu & Shi, 2021.

One new species of the genus Acosmetura (Orthoptera: Tettigoniidae: Meconematinae) from Hunan, China.

This paper reports one new species of the genus Acosmetura Liu, 2000, i.e., Acosmetura compressa sp. nov. from Hunan, China. In addition, morphological photographs of the new species and a distribution map of the known species of the genus are provided. The type specimens are deposited in the Museum of Hebei University.

Two new species of the genus Nigrimacula (Orthoptera: Tettigoniidae: Meconematinae) from Yunnan, China.

The paper reports two new species of the genus Nigrimacula, i.e. Nigrimacula compressata sp. nov. and Nigrimacula platycerca sp. nov. Morphological illustrations and habitus photographs are provided. The type specimens are deposited in the Museum of Hebei University.

The Role of Feeding Characteristics in Shaping Gut Microbiota Composition and Function of Ensifera (Orthoptera).

Feeding habits were the primary factor affecting the gut bacterial communities in Ensifera. However, the interaction mechanism between the gut microbiota and feeding characteristics is not precisely understood. Here, the gut microbiota of Ensifera with diverse feeding habits was analyzed by shotgun metagenomic sequencing to further clarify the composition and function of the gut microbiota and its relationship with feeding characteristics. Our results indicate that under the influence of feeding habits, the gut microbial communities of Ensifera showed specific characteristics. Firstly, the gut microbial communities of the Ensifera with different feeding habits differed significantly, among which the gut microbial diversity of the herbivorous Mecopoda niponensis was the highest. Secondly, the functional genes related to feeding habits were in high abundance. Thirdly, the specific function of the gut microbial species in the omnivorous Gryllotalpa orientalis showed that the more diverse the feeding behavior of Ensifera, the worse the functional specificity related to the feeding characteristics of its gut microbiota. However, feeding habits were not the only factors affecting the gut microbiota of Ensifera. Some microorganisms' genes, whose functions were unrelated to feeding characteristics but were relevant to energy acquisition and nutrient absorption, were detected in high abundance. Our results were the first to report on the composition and function of the gut microbiota of Ensifera based on shotgun metagenomic sequencing and to explore the potential mechanism of the gut microbiota's association with diverse feeding habits.

Phylogeny and Integrative Taxonomy of the Genera Gymnaetoides and Pseudotachycines (Orthoptera: Rhaphidophoridae).

The genera Gymnaetoides and Pseudotachycines are endemic to China and are morphologically homogeneous. The few available diagnostic characters make species identification particularly challenging. Species cannot be classified according to the given generic diagnosis, and phylogenetic analyses have not been reported. Here, we reconstruct the phylogeny using Bayesian inference and maximum likelihood and employ four approaches to delimit species. The results suggest that both Gymnaetoides and Pseudotachycines are paraphyletic. Therefore, we revise their taxonomy based on the combination of morphological characters and molecular data. A new genus Homotachycines Zhu & Shi gen. nov. is erected, and six new combinations are proposed. Species delimitation identifies 15 new species and one new subspecies: Gymnaetoides huangshanensis, G. petalus, G. yangmingensis, G. lushanensis, Pseudotachycines procerus, P. procerus guizhouensis, P. zhengi, P. nephrus, P. sagittus, P. fengyangshanensis, Homotachycines triangulus, H. quadratus, H. baokangensis, H. fusus, H. concavus, and H. qinlingensis sp. nov. Moreover, we find that the shapes of the dorsal lateral lobes and the dorsal median lobe of the male genitalia are also important characters for identifying these genera and that the shapes of the dorsal and lateral sclerites of the male genitalia are suitable for the classifications of species.

Review of the genus Woznessenskia Gorochov, 2002 (Orthoptera: Gryllacrididae) from China.

The paper reports four new species of the genus Woznessenskia Gorochov, 2002 and gives supplementary information on Woznessenskia curvicauda(Bey-Bienko, 1962) from China. The specimens examined are deposited in the Museum of Hebei University, Baoding, China.

Further notes on the genus Ocellarnaca Gorochov, 2004 (Orthoptera: Gryllacrididae) from China.

The paper reports three new species of the genus Ocellarnaca Gorochov, 2004 (Orthoptera: Gryllacrididae) from China, i.e. Ocellarnaca brachyptera sp. nov., Ocellarnaca nigrofemora sp. nov., Ocellarnaca nigra sp. nov. The type specimens are deposited in the Museum of Hebei University, Baoding 071002, China.

One new genus and six new species (Orthoptera: Tettigoniidae: Meconematini) from Yunnan, China.

The paper reported one new genus and six new species from Yunnan, China. The new genus, Neoteratura gen. nov. is similar to the genus Alloteratura Hebard, 1922, but differs from the latter by: apical segment of maxillary palpus slightly shorter than subapical one; humeral sinus indistinct; tegmina shorter, not reaching or slightly surpassing apex of abdomen, but longer than hind wings; male genitalia sclerotized, simple; cercus divided into two branches, or with branches. It resembles the genus Borneratura Gorochov, 2008, but differs from the latter by: tegmina and hind wings shorter; male genitalia sclerotized, cercus with branches.