[PDF] Top 20 The biology of two Exomalopsis species (Hymenoptera: Anthophoridae) with remarks on sociality in bees

... reduce the mortality of the young adult females. In several species of solitary bees and wasps it is estimated that the pre-nesting mortality of adult fe ... See full document

... one. The middle layer in sorne instances is made up of the sticky ma­ terial, commonly found among stingless b�e nests (WILLE, 1 1 ) ...that the sticky material of the ... See full document

... as the author is aware, M. bocandei is the only species ot the stingless bees possessing a ventral nerve cord typical of Trigona combined with a dorsal vessel typical ... See full document

... nests of H. lutescem opened on June 23 also contained large populations of adult female bees, and few ...males. The number of females from the only two nests fulIy ... See full document

... The species allied to Euglossa bursigera constitute a very distinctive and interesting ...one of these, ...other species; three were described in the first paper of this ... See full document

... area of labrum weakly bicallose at apex; clypeus about ...long, with distal third projecting below lower tangent of compound eye; inter- alveolar distance ...width in profile view, 1.2x wider ... See full document

... these bees, as well as the others, need pollen for a balanced diet to survive (Weiner et ...depends on other sources than P. alata for the maintenance of nests, and even during its ... See full document

... analysis of var- iance (manOVa with the r statistics program) to deter- mine whether the total or relative abundances of the dif- ferent pollinators and taxonomic groups were ... See full document

... is the increase of metabolizing material (mg of total embryo weight) inside capsules over ...that the embryos of this species do not have yolk or other nutrition sources supplied ... See full document

... absent on head, nape and pectoral- fin base; Prepelvic area, belly and flanks com- pletely ...rows in longitudinal series 49-57, scale rows to termi- nus of lateral-line pores 25-(28) ...arranged ... See full document

... one species fully parabolic system with signal-dependent chemotactic sensi- tivities has been already researched in the ...literature. In Biler [2], the two-dimensional ... See full document

... Given the above potential costs and benefits, an important theme in behavioural ecology research is to determine the fit- ness consequences of mammalian group ...variation in fitness ... See full document

... changes in the variability of natural populations can result in increased likelihood of extinction or in greater frequency and intensity of pest ...associated with ... See full document

... element of Mexican ...began with the first groups of hunter-gatherers that inhabited the country, arriving at least 13,000 years ago from the Beringia region in Northeast ... See full document

... part of an intricate system of waterways made up of lagoons and creeks that are found along the coast of South- western Nigeria from the Dahomey border to the Niger Delta ... See full document

... pairs of painted bugs in the ...placed in Petri dishes at a temperature of 26-28 °C and a 12:12 ...manipulated with a soft paint brush. Groups of ten eggs were glued ... See full document

... for the loan of type series of ...assisted with the preparation of specimens and use of the SEM, to ...assisting with the preparation of ... See full document

... pubescence on gastric dorsum , never completely covering the integument. The material is a sample of 70 workers from Venezuela, Territorio Federai Amazonas, Río Baria, 00 49' 50" N, 660 ... See full document

... Variation of the orchid bees community (Hymenoptera: Apidae) in three altered habitats of the Colombian “llano” ...Orchid bees subsist in vast tropical ... See full document

... Distribuition on forophytes: The fre- quency of vascular epiphytes over different host trees can be explained by forophyte spe- cies traits, such as size, age, architecture, and bark ...had ... See full document