The aim of this study was to characterize the forest structure with H. flexuosa in Rondônia State, as a first step in developing sustainable harvest and conservation guidelines for the species. Crown attributes, total height (m) and diameter at breast height ≥ 10 (cm) of trees and palms with H. flexuosa were evaluated in three permanent plots (100 m x 150 m each) randomized in 219 ha. A total o...

Two new species, Ooencyrtus alrake Hayat, sp. nov. and Syrphophagus wayanadensis Hayat, sp. nov. (Hymenoptera: Chalcidoidea: Encyrtidae), are described from material collected in Kerala State (India) from Trioza jambolanae Crawford (Hemiptera: Psylloidea: Triozidae), a leaf gall-inducer on species of Syzygium (Myrtaceae). Two species, Psyllaephagus garuga S. Singh and P. phacopteron S. Singh, b...

Coevolution has long been considered a major force leading to the adaptive radiation and diversification of insects and plants. A fundamental aspect of coevolution is that adaptations and counteradaptations interlace in time. A discordant origin of traits long before or after the origin of the putative coevolutionary selective pressure must be attributed to other evolutionary processes. Despite...

An analysis of the floristic composition, structure and diversity tree shrub strata was carried out at tropical deciduous forest El Picante hill, located in San José Tilapa, Puebla. Five transects (T1-T5) were along elevation range 1,055 to 1,095 m asl “point-centred quarter” sampling method used. A total 53 taxa belonging 47 genera 28 families recorded. The best-represented Fabaceae, Cactaceae...

The genus Bursera (Burseraceae) is one of the most diversified and abundant groups of plants of the tropical dry forests of Mexico. In order to provide a basis for better understanding of its evolutionary biology, we reconstructed a phylogeny of 57 species and varieties using the nucleotide sequences of the internal transcribed spacer regions (ITS1 and ITS2) of 18S-26S and the 5.8S coding regio...