@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 {150, title = {Four new species of Hexanchorus Sharp from Ecuador (Coleoptera, Elmidae) with DNA barcoding and notes on the distribution of the genus}, journal = {ZooKeys}, volume = {838}, year = {2019}, pages = {85{\textendash}109}, abstract = {

Te rife beetle genus Hexanchorus Sharp, 1882 is distributed from Mexico to Argentina, forming an important component of the freshwater invertebrate fauna of Latin America. With 21 described species, Hex-anchorus represents one of the most speciose Larainae genera, but its real diversity is likely much higher. We analysed material from a relatively small area in Ecuador, resulting in the frst record of H. cordillierae
for Ecuador and discovery of four new species and one subspecies: Hexanchorus virilis sp. n., Hexanchorus\ rostratus sp. n., Hexanchorus shepardi sp. n., Hexanchorus onorei sp. n. and Hexanchorus onorei sagittatus ssp. n. For delimiting and characterizing species, both morphological and molecular (mtCOI DNA barcodes) data were used. A distribution map of Hexanchorus species is provided based on published records.

}, keywords = {Andes, Diversity, Larainae, Latin America, mtDNA, new record, rife beetles}, doi = {https://doi.org/10.3897/zookeys.838.33086}, url = {https://zookeys.pensoft.net/article/33086/}, author = {M. Linsk{\'y} and Z. {\v C}iamporov{\'a}-Za{\v t}ovi{\v c}ov{\'a} and F. {\v C}iampor Jr} } @article {146, title = {Hexanchorus bifurcatus sp. nov., a new tepui riffle beetle (Coleoptera: Elmidae: Larainae) from Tafelberg, Suriname}, journal = {Zootaxa}, volume = {3895}, year = {2014}, pages = {137{\textendash}143}, abstract = {

Here we present the first published record of a laraine elmid from Suriname, which represents a new species \– Hexanchorus bifurcatus sp. nov. Specimens were collected from the summit of Tafelberg, a table mountain near the Wilhelmina Range of Suriname. This species can be distinguished from all other Hexanchorus by the bifurcate elytral apices and median projection of the third abdominal ventrite of the female, as well as the distinctive male genitalia. Habitus photos, illustrations of the genitalia, a distribution map, notes on habitat, and comparative diagnoses are provided.

}, keywords = {aquatic insects, Guiana Shield, Neotropical region, South America, Table Mountain, water beetle}, doi = {10.11646/zootaxa.3895.1.9}, author = {C.A. Maier and A.E.Z. Short} } @article {78, title = {A monographic revision of the Mexican water beetles of the Family Elmidae.}, journal = {Novitates Zoologicae}, volume = {42}, year = {1940}, pages = {217-396}, author = {H.E. Hinton} } @article {73, title = {Three new species of Hexanchorus Sharp, 1882 (Coleoptera: Elmidae: Larainae) from South America}, journal = {Insecta Mundi }, volume = {17}, year = {2004}, pages = {45-48}, abstract = {

Three new species of Hexanchorus Sharp, H. dimorphus and H. shannoni from Argentina, and H. mcdiarmidi from Venezuela, are described and illustrated.

}, keywords = {Elmidae, Hexanchorus, Larainae, new species}, author = {P.J. Spangler and C.L. Staines} } @article {8, title = {Two new Larainae species from Guayana region, Venezuela (Coleoptera: Elmidae)}, journal = {Zootaxa}, volume = {3753}, year = {2014}, pages = {187-195}, chapter = {187}, abstract = {

Two new species of the subfamily Larainae (Insecta: Coleoptera: Elmidae), Hexanchorus angeli n. sp. and Hypsilara autanai n. sp., are described from Guyana region in Venezuela. We provide habitus photographs, detail drawings of both male and female genitalia, and description of morphological features important for discrimination of the new species. Molecular differences within genera were measured using 816bp fragment of mtDNA gene for cytochrome oxidase c subunit I. Sequence divergences among species are discussed.

}, keywords = {Elmidae, Hexanchorus, Hypsilara, Larainae, mtDNA, Venezuela}, issn = {ISSN 1175-5326 (print edition)}, author = {K. La{\v s}{\v s}ov{\'a} and F. {\v C}iampor Jr and Z. {\v C}iamporov{\'a}-Za{\v t}ovi{\v c}ov{\'a}} }