@article {186, title = {Revision of Macrelmis Motschulsky, 1860 in the Southwestern United States and Northern Mexico with Description of Four New Species (Coleoptera: Elmidae: Elminae)}, journal = {The Coleopterists Bulletin}, volume = {75}, year = {2021}, pages = {93{\textendash}120}, abstract = {

Four new species of Macrelmis Motschulsky, 1860 are described from the southwestern United States and northern Mexico: Macrelmis harleyi Barr, new species from Arizona, Macrelmis mexicana Barr, new species from Mexico, Macrelmis shepardi Barr, new species from Arizona, New Mexico, Texas, and Mexico, and Macrelmis texangusta Barr, new species from Texas and Mexico. Photographic images illustrate the external morphology and male genitalia of the new species, as well as that of Macrelmis shoemakei (Brown, 1971), Macrelmis moesta (Horn, 1870), and Macrelmis texana (Schaeffer, 1911), which occur in the same geographic region. The genitalia of M. moesta and M. texana are described and illustrated for the first time. A key to the 14 known species of Macrelmis occurring in the southwestern United States and Mexico is provided, accompanied by line illustrations of the genitalia of the remaining seven Mexican species not included in the species treatments. Also included are geographic distribution maps for the seven species that are discussed in this article.

}, keywords = {calcium bicarbonate-rich water, Harley P. Brown, Nearctic, riffle beetles, tufa}, doi = {10.1649/0010-065X-75.1.93}, author = {C.B. Barr} } @article {158, title = {A new species of Macrelmis Motschulsky, 1859 (Coleoptera: Elmidae) and new records of Elmidae from Roraima State, northern Brazil}, journal = {Zootaxa}, volume = {4718}, year = {2020}, pages = {277{\textendash}284}, abstract = {

A new species of Macrelmis Motschulsky, 1859 (Macrelmis rodrigoi sp. nov.) is described and illustrated based on specimens found in mountainous areas of the northern Roraima State, Brazil. Pagelmis amazonica Spangler, 1981, Potamophilops bostrychophallus Maier, 2013 and Stegoelmis geayi Spangler, 1990 are recorded in Brazil for the first time and new records for Gyrelmis obesa Hinton, 1940, Macrelmis thorpei Hinton, 1945 and Neolimnius palpalis Hinton, 1939 are presented.

}, keywords = {aquatic insects, entomology, rifle beetles, South America, taxonomy}, doi = {https://doi.org/10.11646/zootaxa.4718.2.9}, author = {M.d.L.S.d. Almeida and A.S. Fernandes and R. Boldrini} } @article {152, title = {Macrelmis pubescens (Grouvelle, 1889) {\textendash} redescription of the species, designation of a lectotype and description of its larva (Coleoptera: Elmidae)}, journal = {Annales de la Soci{\'e}t{\'e} entomologique de France (N.S.)}, year = {2019}, abstract = {

The adult of Macrelmis pubescens (Grouvelle, 1889) is redescribed, illustrated, a lectotype designated, and new locality information provided. The lectotype is housed in the Grouvelle\’s collection in the Mus\éum national d\’Histoire naturelle, Paris, France. The larva of M. pubescens is described, illustrated and compared with the known larvae of the genus. A diagnosis for Macrelmis Motschulsky, 1860 larvae is provided.

}, keywords = {aquatic beetles, Brazil, Neotropical, riffle beetles, South America, taxonomy}, doi = {https://doi.org/10.1080/00379271.2019.1610669}, author = {T.T.S. Polizei and S.A. Casari} } @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 {77, title = {The Elmidae (Coleoptera) of Trinidad and Tobago.}, journal = {Bulletin of the British Museum, Entomology}, volume = {26}, year = {1971}, pages = {245-265}, author = {H.E. Hinton} }