title: A new genus and two new species of Luzarinae cricket from the Atlantic Forest of Northeast Brazil (Orthoptera, Grylloidea).
abstract: A new genus and two new species of Luzarinae crickets (Grylloidea, Phalangopsidae) are described from the Atlantic Forest of Northeast Brazil. Marcgraviella muriciensis Souza-Dias n. gen., n. sp. and M. christianae Desutter-Grandcolas & Souza-Dias n. gen., n. sp. are described using characters of morphology and male genitalia. The new genus is characterized by male genitalia singularities, presenting elongated and inflatable pseudepiphallic parameres, which lies in vertical or almost vertical position, and long and tubular pseudepiphallic arms associated to phallic glands. We provide a discussion about the morphology of male genitalia and the function of the phallic glands and pseudepiphallic arms in Marcgraviella n. gen. and related taxa. An identification key for Marcgraviella n. gen. and related genera is proposed. These genera, which bear phallic glands, are placed in the newly named group, the Aracambiae.
authors.affiliation: Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, rua do Matão, travessa 14, n. 101, 05508-900, Cidade Universitária, São Paulo, SP, Brazil; Email: pedrogdias@gmail.com.
authors.forename: Pedro G B
authors.initials: PG
authors.lastname: Souza-Dias
authors.affiliation: ISYEB UMR 7205 CNRS MNHN UPMC EPHE, Muséum national d'Histoire naturelle, Département Systématique et Evolution, 57 rue Cuvier, Case Postale 50 (Entomologie), 75231 Paris Cedex 05, France; Email: unknown.
authors.forename: Laure
authors.initials: L
authors.lastname: Desutter-Grandcolas
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D001938:Brazil; D017753:Ecosystem; D005260:Female; D065928:Forests; D006135:Gryllidae / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D008297:Male; D009929:Organ Size