@article {188, title = {Disersus otongachi a new species of Larainae riffle beetles from Ecuador (Coleoptera: Elmidae)}, journal = {Zootaxa}, volume = {4963}, year = {2021}, pages = {193{\textendash}199}, abstract = {

We describe here a new species in the genus Disersus Sharp, 1882 from the Otongachi Reserve in Ecuador. Disersus otongachi sp.nov. is externally similar to other representatives of the genus, however, this species can be clearly distinguished for significantly longer antennae and the unique shape of the male genitalia.

}, keywords = {DNA barcoding, Neotropical region, Otongachi Reserve, South America, taxonomy}, doi = {https://doi.org/10.11646/zootaxa.4963.1.12}, author = {F. {\v C}iampor Jr and J. Kodada and J. Boz{\'a}{\v n}ov{\'a} and Z. {\v C}iamporov{\'a}-Za{\v t}ovi{\v c}ov{\'a}} } @article {153, title = {The genus Cylloepus Erichson, 1847 (Coleoptera: Elmidae: Elminae) new species and combinations}, journal = {Zootaxa}, volume = {4652}, year = {2019}, pages = {93{\textendash}100}, abstract = {

Elmidae is one of the most diverse families of aquatic beetles, with more than 1500 species in 148 genera. Cylloepus is the genus with the most species in Americas, with 52 species and 2 subspecies currently known. The genus is easily recognised by external morphology; body elongate, pronotum with a longitudinal impression on the disc and elytra striate and punctate. In this paper, based on the study of several international reference collections, we propose two new combinations, and describe two new species of Cylloepus (C. bispoi sp. nov. and C. segurae sp. nov.) from Ecuador and Bolivia.

}, keywords = {aquatic beetles, Neotropical region, riffle beetles, South America, taxonomy}, doi = {https://doi.org/10.11646/zootaxa.4652.1.3}, author = {T.T.S. Polizei and M.V.L. Barclay} } @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 {85, title = {Hypsilara royi gen. n. and sp. n. (Coleoptera, Elmidae, Larainae) from Southern Venezuela, with a revised key to Larainae of the Western Hemisphere}, journal = {ZooKeys}, volume = {116}, year = {2011}, pages = {25-36}, abstract = {

Here we describe a new genus, for a new species of riffle beetle, Hypsilara royi gen. n. and sp. n., from the tepui Cerro de la Neblina in southern Venezuela. This new genus can be distinguished from all other laraine genera by its small size (ca. 4.5 mm) and the presence of a shallow, wide, V-shaped groove across the apical third of the pronotum. An updated key to the genera of Western Hemisphere Larainae is provided, along with information on habitat and collection methods for this taxon.

}, keywords = {aquatic insects, Cerro de Neblina, Guiana Shield, Neotropical region, riffle beetle, tepui}, author = {C.A. Maier and P.J. Spangler} } @article {84, title = {Elachistelmis gen. n. (Coleoptera: Elmidae: Elminae) from Suriname, with description of two new species}, journal = {Zootaxa}, volume = {3500}, year = {2012}, pages = {61-69}, abstract = {

Elachistelmis gen. n. is described for two new species of riffle beetle, E. tetramera sp. n., and E. sipaliwiniensis sp. n. from southwestern Suriname. This new genus can be distinguished from all other elmid genera by its small size (ca. 1.0\–1.2 mm), pronotum with sublateral carinae and lacking depressions, and the presence of a narrow band of plastron setae on the lateral edge of each elytron. Elachistelmis tetramera sp. n. is among the smallest recorded Elmini and possesses many characters associated with miniaturization, such as reduced tarsal formula and feathery wings with reduced venation. A key to species, scanning electron micrographs, and illustrations of the male genitalia are provided.

}, keywords = {Aquatic insect, miniaturization, Neotropical region, riffle beetle}, author = {C.A. Maier} }