Abstract
The bee-plant community in a beach dune ecosystem in north-eastern of Brazil was studied concerning phenology and floral preference. The bees visited thirty-three species of 20 families of plants. The most visited species were Vernonia arenaria (Asteraceae), Chamaecrista hispidula (Caesalpiniaceae), Passiflora foetida (Passifloraceae) and Turnera melochioides (Turneraceae). Fifty-five percent of plants presented an annual or long flowering period (from 5 to 7 months). The largest number of species blooming was observed from March to August (dry season), corresponding to the period of greatest abundance and diversity of bees. Based on the range of floral sources used by the dominant bees, three guilds of bees were noted: bees with a restricted range of floral sources: Melitoma segmentaria, Centris tarsata, Centris flavifrons, Ceratinula sp.; moderate generalists: Megachile (Leptorachis) sp., Euglossa cordata, Augochlorella sp., Eulaema nigrita and Xylocopa frontalis; and generalists: Xylocopa cearensis, Apis mellifera, Exomalopsis analis and Pseudaugochloropsis pandora.
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