@article {201, title = {Molecular phylogeny of the riffle beetle genus Hexanchorus revealed a presence of a new genus (Coleoptera: Elmidae)}, journal = { Arthropod Systematics \& Phylogeny}, volume = {80}, year = {2022}, pages = {575{\textendash}602}, abstract = {

The riffle beetle genus Hexanchorus Sharp is, with 25 known species, the most speciose genus of the subfamily Larainae in the Neotropics and the second largest globally. An analysis of its phylogeny, based on two mitochondrial (COI, 16S) and two nuclear (18S, 28S) markers, including Hexanchorus-like, but morphologically distinct specimens, supported presence of an unknown genus. The new genus, Rumilara gen. nov., is described here with four new species (R. obscura sp. nov., R. paterna sp. nov., R. riberai sp. nov., R. suppressa sp. nov.) and their larvae. The separate position of the new genus is, beside molecular differences, well substantiated by the morphology of adults (the absence of sexual dimorphism, structure of the pronotum) and larvae (pleurites never reaching to sixth abdominal ventrite). H. sagittatus stat. nov. is elevated to species rank based on molecular data, and Rumilara leleupi (Del\ève) comb. nov. is transferred from the genus Hexanchorus and redescribed, based on its morphology.

}, keywords = {Ecuador, Larainae, larva, molecular phylogeny, new genus, new species, Rumilara, South America, taxonomy}, doi = {10.3897/asp.80.e84013}, author = {M. Linsk{\'y} and Z. {\v C}iamporov{\'a}-Za{\v t}ovi{\v c}ov{\'a} and K. La{\v s}{\v s}ov{\'a} and F. {\v C}iampor Jr} } @article {199, title = {Revision of the Genus Zaitzevia (Coleoptera: Elmidae) of Japan}, journal = {Japanese Journal of Systematic Entomology}, volume = {28}, year = {2022}, pages = {116{\textendash}141}, abstract = {

Japanese species of the genus Zaitzevia are revised taxonomically. Nine species including one new species, Zaitzevia wakayamana sp. nov. from Honshu (Wakayama Pref.) are recognized in Japanese fauna. All the species are described or redescribed with figures of habitus, elytra, elytral epipleura and male genitalia. Endophallic structures of seven species are described. A key to Japanese species is also given.

}, keywords = {Elminae, endophallus, Macronychini, new species}, author = {T. Iwata and M. Hayashi and H. Yoshitomi} } @article {198, title = {Spanglerelmis, a new genus of Elmidae (Insecta: Coleoptera) from Brazil with new species and biological notes}, journal = {European Journal of Taxonomy}, volume = {813}, year = {2022}, pages = {33{\textendash}56 }, abstract = {

In this study, the new genus Spanglerelmis Polizei \& Bispo is described; Microcylloepus ochus Hinton, 1940 is synonymized with Microcylloepus femoralis Hinton, 1940, and transferred to the new genus; and two new species, S. xiririca gen. et sp. nov. and S. timburi gen. et sp. nov. are described. The new genus can be characterized by the combination of the following characters: 1) pronotum without transverse, longitudinal or oblique impressions, sulci or gibbosities on disc; 2) elytra with a carina on interval III and two sublateral carinae on intervals V and VI; 3) mesoventrite with sides strongly raised; and 4) femora with an oblique belt of tomentum dorsally and a transverse belt ventrally. The specimens of the two new species were collected mainly in riffes of unimpacted streams in the Atlantic Forest in S\ão Paulo State, Brazil. Scanning electron microscope images, an identifcation key for the genus and habitat notes are also presented.

}, keywords = {aquatic beetles, Neotropical, new genus, new species, riffe beetles, South America}, doi = {https://doi.org/10.5852/ejt.2022.813.1731}, author = {T.T.S. Polizei and L.d.S.M. Costa and P.d.C. Bispo} } @article {197, title = {Okalia necopinata sp. nov. (Insecta, Coleoptera, Elmidae) from Gunung Mulu National Park in Sarawak (Malaysia)}, journal = {ZooKeys}, volume = {1092}, year = {2022}, pages = {79{\textendash}92}, abstract = {

Okalia necopinata sp. nov., from Sarawak, northwest Borneo, Malaysia, is described and illustrated along with an identifcation key. The standard barcoding fragment of the mitochondrial gene coding for cytochrome c oxidase subunit I (COI) was used together with morphological characters to delimit the taxonomic boundaries of the two known species, which live in shallow streams fowing through dense primary forests in limestone areas in Pahang (West Malaysia) and Sarawak (East Malaysia). The majority of all examined Okalia are fightless. Morphological distinguishing characters are the length of the granulated ffth elytral interval, the elytral and pronotal punctation, the aedeagal morphology, and the distal portion of the ovipositor.

}, keywords = {barcoding, Borneo, DNA, Dryopoidea, Macronychini, Oriental Region, rife beetles, taxonomy}, doi = {10.3897/zookeys.1092.79635}, author = {J. Kodada and M.A. J{\"a}ch and D. Selnekovi{\v c} and K. Goffov{\'a}} } @article {196, title = {Elmidae of Sarawak: the genus Potamophilus Germar, 1811, with a description of P. kelabitensis sp. nov. (Insecta: Coleoptera)}, journal = {European Journal of Taxonomy}, volume = {806}, year = {2022}, pages = {1{\textendash}18}, abstract = {

Potamophilus kelabitensis sp. nov., a new rife beetle (Coleoptera, Elmidae) discovered in the Kelabit Highlands (northern Sarawak) and Sapulut environment (southern Sabah), is described. Illustrations of the habitus and diagnostic characters of the new species are presented. Diferences from the type species P. acuminatus (Fabricius, 1792) from the Palaearctic region, based on DNA barcodes and morphological characters, are discussed. Selected morphological characters of all known species of Potamophilus from Vietnam, Myanmar, and Papua New Guinea are also compared with the new species. The systematic position of the genus relative to other sympatric genera of the subfamilies Larainae LeConte, 1861 and selected Elminae Curtis, 1830 belonging to three tribes is discussed based on phylogenetic trees inferred from the mitochondrial COI and nuclear ArgK as well as 18S rRNA gene sequences.

}, keywords = {Borneo, integrative taxonomy, Potamophilus, rife beetles}, doi = {https://doi.org/10.5852/ejt.2022.806.1695}, author = {J. Kodada and D.S. Boukal and P. V{\v d}a{\v c}n{\'y} and K. Goffov{\'a} and K. Ondrejkov{\'a}} }