Three new species of Macrelmis Motschulsky (Coleoptera: Elmidae: Elminae) from Southeastern Brazil with new definition of species groups to the genus Author Passos, Maria Inês Silva Dos Author Miranda, Gustavo Silva De Author Nessimian, Jorge Luiz text Zootaxa 2015 4058 2 195 210 journal article 39260 10.11646/zootaxa.4058.2.3 aef58d69-0e0c-4ad8-8e27-3a00ea2bc448 1175-5326 241270 7BF705F4-BB24-4BC4-9430-A2AB8A990DDF striata species group Hinton, 1940 Diagnostic character : aedeagus with a constriction in the median region, tapering towards the apex ( Figs. 4D – F ). Species: Macrelmis sandersoni , M. striata and M. striatoidea . Distribution ( Fig. 7 ): Mexico : Temascaltepec and Morelos ( Hinton 1936 ; Hinton 1940 ; Brown 1984 ). Guatemala : Rio Naranjo ( Sharp 1882 ). History of the group : Hinton (1940) stated that M. striatoidea , M. striata and M. sandersoni are similar to each other, but did not formally describe the species group. He differentiated the species based on presence/absence of fine hairs on the four basal tarsi segments. Hinton (1940) also stated that M. grandis resembles these three species (despite of being associated to M. granigera by Hinton (1934)) being different in size, but the male genitalia of M. grandis fits in the grandis species group and should not be included in this group.