@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 {164, title = {The Neotropical genus Portelmis Sanderson, 1953 (Coleoptera: Elmidae): three new species, new records and updated key}, journal = {Zootaxa}, volume = {4810}, year = {2020}, pages = {452{\textendash}467}, abstract = {

Elmidae is one of the most diverse families of aquatic beetles, with more than 1500 species in 151 genera. The Neotropical genus Portelmis formerly comprised five species known from Central and northern South America, divided into two species groups. Three new Brazilian species from the nevermanni group are described and illustrated here: Portelmis vanini sp. nov., Portelmis krolowi sp. nov. and Portelmis fusariae sp. nov. New species records for the North, Central-West and Southeast of Brazil are presented.We also provide first SEM images and an updated key for Portelmis species.

}, keywords = {aquatic insects, riffle beetles, South America, taxonomy}, doi = {https://doi.org/10.11646/zootaxa.4810.3.3}, author = {T.T.S. Polizei and A.S. Fernandes} }