Specialized diet of the solitary bee Epicharis rustica (Apoidea, Centridini): importance of the tree Byrsonima sericea

Carvalho, Fabrício L.; Raw, Anthony

doi:10.1016/j.rbe.2016.12.001

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SHORT COMMUNICATION • Rev. Bras. entomol. 61 (1) • Jan-Mar 2017 • https://doi.org/10.1016/j.rbe.2016.12.001 copy

Specialized diet of the solitary bee Epicharis rustica (Apoidea, Centridini): importance of the tree Byrsonima sericea

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Collection of pollen was verified in 248 samples of the material on the hind tibial scopae of the solitary bee, Epicharis rustica (Olivier, 1879) captured on their return to the nest. Of the total, 54% (133) of the samples had material on the scopae, 48 of then had only oil and 85 (64%) had both oil and pollen. For seven weeks, almost all (91%) of the 85,000 the pollen grains were of the tree, Byrsonima sericea DC. In the latter weeks the proportion of this species decreased. Like several other members of the genus, E. rustica is univoltine, oligolectic and nests in aggregations.

Keywords:
Oil flowers; Oligolectic species; Pollen; Specialist bees

Date of collection	Number of bees captured	Number of bees with material on the scopae	Number of bees with only oil	Number of bees with pollen and oil	% of pollen of Byrsonima sericea in samples with pollen
23 December	27	15	5	10	98.8
30 December	50	15	4	11	99.7
6 January	24	15	2	13	99.1
13 January	23	15	8	7	100
22 January	26	15	4	11	99.7
27 January	24	15	3	12	99.7
5 February	10	6	0	6	100
11 February	18	11	8	3	99.5
20 February	11	6	4	2	73.2
27 February	18	10	5	5	69
6 March	17	10	5	5	64.2
Total	248	133	48	85	91.2

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[1] * Corresponding author. E-mail: flcarvalho@ufsb.edu.br (F.L. Carvalho).