This paper presents speleological, geological and biological data, collected the Grupo Espeleológico Paraense since 1983, in some unusual caves developed in bauxites from the Serra do Piriá region, NE of the Pará State, northem Brazil. Tlle caves were probably developed during the degradation ofthe bauxitic pro file. The last recognized episode of cave development is associated with the differential erosion and...
In Central Amazon, Brazil, the tabanid Phorcotabanus cinereus (Wiedemann) was recorded attacking the native duck Cairina moschata (Linnaeus) (Anseriformes, Anatidae). The flight and behavior of the tabanid during the attacks and the host's defenses were videotaped and analyzed in slow motion. The tabanid was recorded flying rapidly around the heads of the ducks before landing. Landing always took place on the b...
We described a new species of Tabanidae (Diptera), Chlorotabanus flagellatus sp. nov., distributed in the Amazon region, in the States of Amazonas and Pará. Diagnosis, discussion and illustrations of external and internal characters are provided.
Dichelacera matogrossensis sp. nov. is described based on females from the Chapada dos Guimarães, state of Mato Grosso, Brazil. Diagnosis, discussion and illustrations are provided. © 2015, Fundacao Zoobotanica do Rio Grande do Sul. All rights reserved.
Tabanid females are better known as hematophagous on man and other mammals, and linked to mechanical transmission of parasites. The association between tabanids and reptiles is poorly known, but has been gaining more corroboration through experiments and occasional observation in the tropics. The present study was conducted at a military base (CIGS/BI-2), situated 54 km from Manaus, Amazonas, in a small stream ...