A new Paxillus MacLeay, 1819 (Coleoptera: Passalidae: Passalinae) from the state of Amazonas, Brazil

Abstract

Paxillus is a neotropical genus belonging to the subfamily Passalinae widespread from Mexico to Argentina. Brazil is known to harbor five species belonging to this genus with most of them presenting at head a flattened central tubercle lacking a free apex. However, one of these species, Paxillus macrocerus Reyes-Castillo & Fonseca, differs from that pattern by having a long central tubercle with a completely free apex. The present study describes and illustrates another new species, which has been found in the Brazilian Amazon, showing this same characteristic.

Distribuição geográfica e diversidade de passalidae (Coleoptera: Scarabaeoidea) no sudeste da Mata Atlântica (Brasil). Geographic Distribution and Diversity of Passalidae (Coleoptera: Scarabaeoidea) from the Atlantic Rainforest of Southeastern (Brazil).

“…Os estudos mais relevantes para a fauna brasileira incluem , e especificamente, para a fauna amazônica Fonseca (1992;1999), Fonseca & Reyes-Castillo (1994), Mouzinho & Fonseca (1998), Fonseca et al (2008). Enquanto que a fauna no bioma de Mata Atlântica permanece negli-genciada (ex.…”

Passalid (Insecta: Coleoptera: Passalidae) collected from trunks of Scleronema micranthum (Malvaceae)

“…P. leachi is a Neotropical species of wide distribution from the north of the Isthmus of Tehuantepec in Mexico to northern Argentina (Reyes-Castillo 1973;Boucher 1986;Reyes-Castillo and Fonseca 1992). In Brazil, this species has a wide distribution, occurring from the far north to the far south of the Pampas, including areas to the west of its border, as the Andean region, always found colonizing decaying logs (Fonseca et al 2008).…”