RESUMO
A new species of Melanoplinae (Orthoptera: Acrididae) is described from Central Mexico: Pedies andreae sp. nov. Fontana, Mariño-Pérez, Woller and is added to the 12 existing species. Taxonomic placement of this species is justified based on distinct morphology and comparisons with congeneric species are provided. Additionally, species in this genus are associated with higher elevations (1,700 to 3,700 masl) that possess larger fluctuations in temperatures. We observed that females of P. andreae sp. nov. exhibit blue coloration on their abdomens and we discuss the possible reasons for this peculiar pigmentation. Interestingly, we did not observe this coloration in males. Finally, images are provided for three live previously described species of Pedies.
Assuntos
Gafanhotos , Abdome , Animais , Feminino , Masculino , MéxicoRESUMO
Three new species of the tribe Dactylotini (Acrididae: Melanoplinae) are described from Central and Southern Mexico. 1) Dasyscirtus monicae sp. nov. Fontana, Mariño-Pérez, Sanabria-Urbán, & Woller is described from the eastern portion of the Balsas River Basin and the outer slope of the Mexican Volcanic Belt; 2) Perixerus obscurus sp. nov. Fontana, Mariño-Pérez, Sanabria-Urbán, & Woller is described from the Sierra Norte de Oaxaca mountain range; and 3), Perixerus triqui sp. nov. Fontana, Mariño-Pérez, Sanabria-Urbán, & Woller is described from the Sierra Madre del Sur mountain range and towards the Pacific Coast of Oaxaca. Taxonomic placement of these species is justified based on distinct morphology and comparisons with congeneric species are provided. Finally, we provide a biogeographical explanation for the distribution of the species in both genera.
Assuntos
Gafanhotos , Animais , MéxicoRESUMO
Liladownsia fraile gen. nov. sp. nov. Fontana, Mariño-Pérez, Woller & Song (Lila Downs' friar grasshopper) of the tribe Dactylotini (Orthoptera: Acrididae: Melanoplinae) is described from the pine-oak forest of the Sierra Madre del Sur Mountain Range in Oaxaca, Mexico. Taxonomic placement of this new genus is justified based on morphological characters as well as a molecular phylogeny. Information about the probable host plant, phenology, and known localities is also presented. We also present an updated molecular phylogeny of Melanoplinae, which includes representatives of five of the seven recognized tribes. The monophyly of the subfamily and the included tribes is tested and we find Dactylotini to be paraphyletic because of the placement of Hesperotettix Scudder, 1876. We also recover strong close relationships between the new genus and Perixerus Gerstaecker, 1873 and Dactylotum Charpentier, 1845.
Assuntos
Gafanhotos/classificação , Gafanhotos/fisiologia , Filogenia , Animais , Demografia , Feminino , Gafanhotos/genética , Masculino , México , Especificidade da EspécieRESUMO
A new genus belonging to the katydid tribe Copiphorini (Tettigoniidae: Conocephalinae) is established, Brachycaulopsis gen. nov., collected from the state of Chiapas, Mexico. Also provided are first descriptions for both the male of Conocephalus (Aphauropus) leptopterus Rehn & Hebard, 1915 (Conocephalinae: Conocephalini) and the female of Insara acutitegmina Fontana et al., 2011 (Phaneropterinae: Insarini).