One new species and one new provincial record of Neoperla (Plecoptera: Perlidae) from Yunnan, China.

A new species, Neoperla yiliangensis Mo, Li & Murányi, sp. nov., is proposed from Yunnan Province of southwestern China and compared with related congeners.

Four new species of Stephens, 1836 from the Balkans (Plecoptera, Leuctridae).

Four, presumably microendemic new species are described on the basis of morphology of the adult males and females. Each species was collected only in a single mountain range of the western Balkans: Kovács & Murányi, (Albania, Çermenikë), (Serbia, Golija), (Bosnia & Herzegovina, Kozara), (Montenegro, Visitor). Their morphological affinities and ecology are discussed, phylogenetic relations will be described in the framework of ongoing molecular studies of Balkan species.

Mitochondrial genomes provide insights into the Euholognatha (Insecta: Plecoptera).

Background: Euholognatha is a monophyletic group within stoneflies comprised by a superfamily Nemouroidea and a family Scopuridae. Based on morphological data, the family-level phylogenetic relationships within Euholognatha are widely accepted, but there is still controversy among different molecular studies. To better understand the phylogeny of all six extant euholognathan families, we sequenced and analyzed seven euholognathan mitogenomes.

New and little-known stonefly species of the 'western assemblage' group (Plecoptera, Leuctridae) from China.

We examined Chinese stonefly specimens of the 'western assemblage' group. A new species from Hainan Province, Li, Li & Yang, is described and illustrated from male and female adults, and it is compared to closely related taxa. The hitherto unknown female of Li & Yang, 2010 is described.

New species and a new province record of Hemacroneuria (Plecoptera: Perlidae) from China.

A new stonefly of the perlid genus Hemacroneuria Enderlein, 1909, H. kondratieffi sp. nov.

Review of Kamimuria (Plecoptera: Perlidae) from Zhejiang and Fujian provinces, China, with notes on the morphological variability of K. tienmushanensis Wu, 1938.

Two poorly known species of Kamimuria Klapálek, 1907, K. simplex (Chu, 1929) and K. tienmushanensis Wu, 1938, are redescribed and newly recorded for Mt.

The intraspecific morphological variability of Styloperla Wu, 1935 (Plecoptera: Styloperlidae).

Intraspecific morphological variability of four Styloperla Wu, 1935 species are described and discussed in this paper. The males of each species have variable specializations present at their basal cercal process, including the variable number of branches or differing degrees of curvature at the apical spines. A generalization on the species definition of Plecoptera, especially a new concept of conspecificity is also provided herein.

A new genus and species of Perlodinae (Plecoptera: Perlodidae) from Korea.

Habaek koreanus gen. n., sp.

Additions to the fauna and biology of stoneflies (Plecoptera) in Taizi River Basin, Liaoning, with seven new species records to China.

Background: An investigation report of stonefly fauna in Benxi Manchu Autonomous County, Liaoning Province, northeast China (used to be called Manchuria, now includes Liaoning, Jilin, Heilongjiang Provinces and parts of Inner Mongolia, which are adjacent to the Russian Far East and the Korean Peninsula). Materials were studied with field observation in 2018 and 2019.

New Information: This paper records five families, nine genera and 14 species of stoneflies from Taizi River, Liaoning Province.

New Synonym and New Species Record of (Plecoptera: Perlodidae) from China with a Morphological, Phylogenetic and Biogeographic Study on This Genus.

The type species of Klapálek, 1908, (Klapálek, 1901), is based on a single female collected from Mongolia, but it was considered the same as another species, from Qinling, China, when the genus was proposed. This study narrates the story of these two species, which have been confused for a century. Until now, the distribution of has been confirmed only in Mongolia and Russia, and we recently recorded it for the first time in Inner Mongolia as a new species record in China.

Mitochondrial Genome of (Plecoptera: Taeniopterygidae), with a Phylogenetic Analysis of Nemouroidea.

Taeniopterygidae is a medium-sized family of stoneflies. The phylogeny of Taeniopterygidae was widely accepted based on the morphological analyses. However, there are different opinions based on molecular data.

Two new species and one new record of (Plecoptera, Perlidae) from Guangxi Zhuang Autonomous Region, China.

Three species of the group are described from Guangxi Zhuang Autonomous Region of southern China, including two new species, and , and a new record for Guangxi: Wu & Claassen, 1934. Illustrations and color images are provided for the three species mentioned above, and the new species is compared with related congeners in the group. Notes on the distribution of the species known from Guangxi are also given.

Review and contribution to the stonefly (Insecta: Plecoptera) fauna of Azerbaijan.

Known Plecoptera data published from Azerbaijan are critically reviewed. New records of 28 species are enumerated on the basis of specimens collected between 2017 and 2019, among them 16 are new for the fauna of Azerbaijan. Nemoura irani Aubert, 1964 is new for the whole Caucasian region, Leuctra sanainica Zhiltzova, 1960 and Plesioperla sakartvella (Zhiltzova, 1956) are new for the Greater Caucasus.

The complete mitochondrial genome of Shimizu, 1997 (Plecoptera: Nemouridae) from Japan.

The genus belongs to the family Nemouridae (Plecoptera) and has 205 species in the Holarctic and Oriental Regions. We sequenced the fourth complete mitochondrial genome of Shimizu, 1997. The mitogenome is 15,827 bp long with 37 genes plus a control region with an A + T content of 68.

Two Complete Mitochondrial Genomes From Leuctridae (Plecoptera: Nemouroidea): Implications for the Phylogenetic Relationships Among Stoneflies.

The family-level relationships within Plecoptera have been a focused area of research for a long time. Its higher classification remains unstable, and the phylogenetic relationships within Plecoptera should be re-examined. Here, we sequenced and analyzed two complete mitochondrial genomes (mitogenomes) of Paraleuctra cercia and Perlomyia isobeae of the family Leuctridae.

Review of the Oriental genus Neoperlops Banks, 1939 (Plecoptera: Perlidae).

A new species of the Oriental Perlidae genus Neoperlops Banks, 1939, Neoperlops triangulatus sp. nov. is described from Guangxi Zhuang Autonomous Region of southern China.

Two new species of the Amphinemura sinensis group (Plecoptera: Nemouridae) from southern China.

Two new species of the genus Amphinemura in the sinensis species group, A. retusilobata sp. n.

A new species of Protonemura Kempny, 1898 (Plecoptera: Nemouridae) from the Ishizuchi range, Shikoku, Japan.

A new species of the genus Protonemura Kempny, 1898 (Plecoptera: Nemouridae: Amphinemurinae) is described from the Ishizuchi Range of Shikoku Island, Japan, based on the male, female and Co1 sequences. Protonemura shimizui Murányi Gamboa sp. n.

A remarkable new genus and species of Nemourinae (Plecoptera, Nemouridae) from Sichuan, China, with systematic notes on the related genera.

A remarkable new genus and species of Nemourinae, Sinonemura balangshana gen. et sp. n.

Female answer specificity to male drumming calls in three closely related species of the stonefly genus Zwicknia (Plecoptera: Capniidae).

This study examines the rate of female answers to conspecific versus heterospecific male vibratory calls in three, closely related stonefly species: Zwicknia bifrons, Z. acuta, and Z. rupprechti.

An additional new species of Peltoperlopsis Illies, 1966 (Plecoptera: Peltoperlidae) from China.

The holotype male of Peltoperlopsis sagittata sp. n. is described from Yunnan Province of southwestern China.

Additions to the genus Hemacroneuria Enderlein (Plecoptera: Perlidae) from China.

Two new species of the perlid genus Hemacroneuria Enderlein, 1909, H. elongata sp. nov.

Holomorphology of Kamimuria peppapiggia sp. n. (Plecoptera: Perlidae) from the foothills of Taihang Mountains, Henan Province of China.

A new species of the species rich Asian perlid genus Kamimuria Klapálek, K. peppapiggia sp. n.

A remarkable new species of Kiotina Klapálek, 1907 (Plecoptera: Perlidae) from China.

A remarkable new species of the genus Kiotina Klapálek, 1907 is described, K. bilobata sp. nov.