@article {181, title = {Notes on Stenhelmoides and description of the true male genitalia of S. strictifrons Grouvelle, 1908 (Coleoptera: Elmidae)}, journal = {Acta Amazonica}, volume = {50}, year = {2020}, pages = {317-326}, abstract = {

The genus Stenhelmoides comprises 15 species spread over all Central and South America and its greatest species richness is clearly associated with Amazonian regions. Based on examination of type specimens and additional material, we describe and illustrate the true male genitalia of Stenhelmoides strictifrons, which had until now been incorrectly illustrated in the literature. We also report new records of the genus Stenhelmoides from Brazil and Guyana. In addition to pictures of the species\’ habitus, we provide pictures of the type specimens of Stenhelmoides grandis, S. grouvellei, S. guyanensis; S. strictifrons and S. submaculus. Based on the International Code of Zoological Nomenclature, we recognize additional paralectotypes for S. guyanensis and for S. grouvellei.

}, keywords = {aquatic insects, morphology, Neotropics, riffle beetles, taxonomy}, doi = {https://doi.org/10.1590/1809-4392202002791}, author = {A.S. Fernandes and T.T.S. Polizei and R. Boldrini} } @article {165, title = {Hexacylloepus Hinton, 1940 rises again; 18 new species of a neglected genus (Coleoptera: Byrrhoidea: Elmidae)}, journal = {Zootaxa}, volume = {4819}, year = {2020}, pages = {006{\textendash}048}, abstract = {

The genus Hexacylloepus extends from the Neotropical region to the southwestern United States of America. At present, 25 species are known from 20 countries, with no new species proposed since 1972. In this paper, we describe and illustrate 18 new species (H. barrae; H. calori; H. casariae; H. froehlichi; H. geiseri; H. grandis; H. iassu; H. keitai; H. maierae; H. manauara; H. metapa; H. phalluspilosus; H. shorti; H. taylorae; H. thoracica; H. tibialis; H. ubirajarai; H. zaninii), from eight countries and give the first records of the genus from Suriname and Guyana.

}, keywords = {aquatic beetles, morphology, Neotropical, riffle beetles, taxonomy}, doi = {https://doi.org/10.11646/zootaxa.4819.1.2}, author = {T.T.S. Polizei and M.V.L. Barclay and P.d.C. Bispo} } @article {140, title = {Dryopomorphus siamensis sp. nov., a new riffle beetle from Thailand (Coleoptera: Elmidae) and remarks on the morphology of the mouthparts and hind wing venation of D. bishopi Hinton}, journal = {Entomological Problems}, volume = {24}, year = {1993}, pages = {51{\textendash}58}, abstract = {

Dryopomorphus siamensis\ sp. nov.\ from Thailand is described. Line drawings of the antenna and the male genitalia are provided. In addition, the labrum, mandible, maxilla, labium and the hind wing of\ D. bishopi\ are examined and illustrated.

}, keywords = {Coleoptera, Dryopomorphus, Elmidae, hind wing venation, morphology, mouthparts, new species, taxonomy}, author = {J. Kodada} } @article {32, title = {A new species of Hintonelmis Spangler (Coleoptera: Elmidae: Elminae) from Central Amazonia, Brazil}, journal = {Zootaxa}, volume = {2353}, year = {2010}, pages = {43-48}, chapter = {43}, abstract = {

Hintonelmis anamariae sp. nov. is described and illustrated based on adult specimens collected in Presidente Figueiredo Municipality, Amazonas State, Brazil. This species can be distinguished from all other known Hintonelmis species by its dorsal color pattern and the morphology of the male genitalia.

}, keywords = {Elmidae, morphology, Neotropics, riffle beetle, taxonomy}, author = {A.S. Fernandes and M.I.S. Passos and N. Hamada} } @article {26, title = {A new species of Hedyselmis Hinton and notes on the phylogeny of the genus (Coleoptera: Elmidae)}, journal = {Zootaxa}, volume = {1781}, year = {2008}, pages = {55-62}, chapter = {55}, abstract = {

A new species, Hedyselmis belatani sp. nov., is described from West Malaysia, based on morphological characters. The description includes detailed drawings of the most important structures. Four fragments of DNA, three mitochondrial (cox1, cob, rrnL) and one nuclear (SSU), were sequenced and compared with H. opis Hinton and other elmid species. The taxonomic position of H. belatani sp. nov., its distribution and the phylogeny of the genus are discussed.

}, keywords = {Coleoptera, DNA, Elmidae, Hedyselmis, Malaysia, morphology, new species, phylogeny}, author = {F. {\v C}iampor Jr and Z. {\v C}iamporov{\'a}-Za{\v t}ovi{\v c}ov{\'a}} }