OBJECTIVE To assess the significant differences in the nymphal development of the Rhodnius robustus Larrousse, 1927 under different temperatures and humidity conditions. This is a species found in the northern region of Brazil (states of Acre, Amazonas, and Pará), Colombia, Equator, Peru and Venezuela. METHODS Three groups of triatominae were kept under the following laboratory conditions: 33...

Alpha taxonomy, and specifically the delimitation of species, is becoming increasingly objective and integrative. The use of coalescent-based methods applied to genetic data is providing new tools for the discovery and delimitation of species. Here, we use an integrative approach via a combination of discovery-based multivariate morphological analyses to detect potential new species. These pote...

Two types of large, branched struc tures from the Lower Pleis to cene (Calabrian) high-en ergy calcarenites of Favignana Is land are de scribed: Faviradixus robustus gen. et sp. nov. and Egadiradixus rectibrachiatus gen. et sp. nov. They may be in ter preted as root struc tures of large plants, i.e., trees and trees or shrubs, re spec tively. The for mer taxon co-oc curs with the ma rine an i m...

Smilidarnis duocornus sp. nov. , S. erwini and robustus are described, illustrated, included in a key to the five species here recognized . One member of this genus, from Ecuador (new country record for genus), is which differs its congeners having distinct coloration being intermediate size terms overall body length relative lateral apical spines. (from Peru) Brazil) differ other pronotum bear...

Tropical savannas cover 20-30% of the world's land surface and exhibit high levels of regional endemism, but the evolutionary histories of their biota remain poorly studied. The most extensive and unmodified tropical savannas occur in Northern Australia, and recent studies suggest this region supports high levels of previously undetected genetic diversity. To examine the importance of barriers ...