@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 {62, title = {Bryelmis Barr (Coleoptera: Elmidae: Elminae), a New Genus of Riffle Beetle with Three New Species from the Pacific Northwest, U.S.A.}, journal = {The Coleopterists Bulletin}, volume = {65}, year = {2011}, pages = {197-212}, abstract = {

Bryelmis Barr, a new genus of elmid, and three new species, Bryelmis idahoensis Barr, Bryelmis rivularis Barr, and
Bryelmis siskiyou Barr, are described from streams and springs in Washington, Oregon, California, and Idaho. Drawings or photographs of the adult habitus and male genitalia of each species, and of the larval habitus of the genus, are included, as well as a key to the adults of the species and revised couplets for insertion into existing adult and larval keys to the Elmidae. The biogeography, habitat, and microhabitat of the species are discussed. Aquatic liverworts are the unusual primary microhabitat of all three species of Bryelmis.

}, keywords = {aquatic beetles, aquatic liverwort, Chiloscyphus, glacial refugium, Nearctic}, doi = {10.1649/072.065.0301}, url = {http://www.bioone.org/doi/full/10.1649/072.065.0301}, author = {C.B. Barr} }