The objective of this study was to evaluate the diversity and abundance edaphic fauna organisms in single intercropped systems sweet potato (Ipomoea batatas) ecologically-based popcorn (Zea mays) Red Oxisol, Northwest region state Rio Grande do Sul, Brazil. Four cultivars were used with popcorn: BRS Amélia, Rubissol, Cuia Crioula. soil assessment carried out using PROVID-type traps. Richness, d...

Coelomera lanio (Coleoptera: Chrysomelidae) is the most important defoliator of Cecropia trees. Natural enemies of C. lanio collected in the region of Viçosa, State of Minas Gerais, Brazil were identified on field observations in a forest fragment and on laboratory analyses. Individuals of C. lanio were not found on Cecropia pachystachya trees colonized by Azteca mülleri (Hymenoptera: Formicida...

BACKGROUND Increased tryptase concentrations are a risk marker for the severity of reactions to Hymenoptera stings or venom immunotherapy OBJECTIVE To investigate serum tryptase concentrations in beekeepers with and without Hymenoptera venom allergy (HVA). METHODS Serum tryptase concentrations were measured in adult patients with HVA (n = 91, 37 of whom were beekeepers), beekeepers without ...

All insects in the order Hymenoptera have haplodiploid sex determination, in which males emerge from haploid unfertilized eggs and females are diploid. Sex determination in the honeybee Apis mellifera is controlled by the complementary sex determination (csd) locus, but the mechanisms controlling sex determination in other Hymenoptera without csd are unknown. We identified the sex-determination...

The immatures of males of two species of Camponotus ants (Hymenoptera: Formicidae) are described and compared by light and electron microscopy. The numbers of larval instars were determined: Camponotus rufipes Fabricius (Hymenoptera: Formicidae) have four instars; and Camponotus vittatus Forel have three. Male larvae of the two species are similar to previously described Camponotus larvae, shar...

2 Institute of Ecology, Nature Research Centre, Akademijos 2, LT-08412 Vilnius, Lithuania Solitary cavity-nesting Hymenoptera constitute a group of important bioindicators of terrestrial habitats. Some of them, like caterpillar-hunting potter wasp Ancistrocerus trifasciatus (Hymenoptera: Vespidae: Eumeninae), are quite abundant in both continuous and fragmented habitats and might be a promising...

Helminths can be transmitted to human beings in several ways, but little attention has been given to vector or mechanical transmission of infective forms by insects. The present study surveys the helminth species present in three orders of insects that coexist in proximity with the human environment. A total of 700 insects (54 Blattodea, 275 Diptera, and 371 Hymenoptera) were collected and exam...

The order Hymenoptera currently includes the impressive number of more than 115000 known species. The tropical hymenopteran fauna, however, is poorly known and this number probably represents just a small fraction of the real richness of the group. A great part of the species within Hymenoptera is composed of parasitoids, animals that exploit other organisms to death in order to acquire the foo...

Adenocalymma bracteatum is a shrub of dense foliage and yellow flowers, easily found on grasslands areas in Central Brazil. The aim of this study was to determine the reproductive biology and the flower visitors of A. bracteatum in a pasture area nearby Ivinhema city, MS (Brazil). The flowering peak occurs in winter. The flower reflects ultraviolet light. Anthesis begins at 6:30h, and pollen an...

The biology and ecology of Psyllaphycus diaphorinae Hayat, a potential natural enemy of the Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Liviidae), is poorly understood. In April 2013, six P. diaphorinae females collected from Punjab, Pakistan emerged from parasitized Asian citrus psyllid nymphs in quarantine at the University of California, Riverside and were used to initiate co...