@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 {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}} }