Macrelmis bocainensis, Passos, Maria Inês Silva Dos, Miranda, Gustavo Silva De & Nessimian, Jorge Luiz, 2015

Passos, Maria Inês Silva Dos, Miranda, Gustavo Silva De & Nessimian, Jorge Luiz, 2015, Three new species of Macrelmis Motschulsky (Coleoptera: Elmidae: Elminae) from Southeastern Brazil with new definition of species groups to the genus, Zootaxa 4058 (2), pp. 195-210 : 202-203

aristaea species group Sampaio et al. (2012)

Diagnostic character: parameres subequal or smaller than aedeagus; with or without setae concentrated near the apex, positioned internally or externallly; aedeagus always tapering from the base to the apex ( Figs. 3D – F ); pronotum with poorly developed sublateral carinae; pronotum and elytra surface clothed with erect microscopic setae; entire metasternal disk surface tomentose; and hind tibiae with two apical tomentose fringes.

Species: Macrelmis amana , M. aristaea , M. bocainensis sp. nov., M. froehlichi , M. fluminensis , M. friburguensis , M. plaumanni , M. saleia , M. salti , M. tijucana and M. zama .

Distribution ( Fig. 6 ): Brazil: Santa Catarina ( Hinton 1946), Rio de Janeiro (present work), Goiás ( Barbosa et al. 2013) and São Paulo ( Hinton 1946).

History of the group: This group was first cited in Sampaio et al (2012), but not formally described. The species Macrelmis amana and M. aristaea were already cited as closely related by Hinton (1946). In the same paper, Hinton stated that M. plaumanni is similar to M. zama , and that M. saleia is close to M. aristea using mouth part characters to relate them, supporting the association of these species with similar genitalia based on other characters. M. fluminensis was considered as similar to M. tijucana by Sampaio et al. (2012). M. friburguensis was considered similar to M. tijucana and to the aristaea group since its description, based on the absence of impressions on pronotum ( Sampaio et al. 2012). M. salti was never associated with any species since its description ( Hinton 1936) and is included for the first time here. M. tijucana was not assigned to any group, but was stated as similar to M. aequalis , M. celsa , M. pubescens , M. salti , M. sandersoni , M. striata , and M. striatoidea ( Passos & Felix 2004) , but of these, only M. salti is in the newly proposed aristea group. M. froehlichi was also never assigned to any group ( Barbosa et al. 2013).

Figures

FIGURE 6. Distributional map of South American species of Macrelmis. The question mark in the big map over Brazil represents M. antiqua, a species without a more precise location known. The question mark in frame B over São Paulo state represents M. salti, another species with not many detail, beside the state where it occurs in Brazil.

FIGURE 3 A – I. Male genitalia of Macrelmis. A – C. amazonica sp. group. A. M. amazonica (modified from Hinton, 1945). B. M. terea. C. M. thorpei (both modified from Hinton, 1946). D – F. aristea sp. group. D. M. aristea. E. M. amana. F. M. plaumani (all three modified from Hinton, 1946). G – I. celsa sp. group. G. M. celsa. H. M. codris (both modified from Hinton, 1946). I. M. nessimiani (modified from Barbosa et al, 2013). Scale bars: 0.1 mm.