ABSTRACT. Community of native bees (Apidae) in a tropical rain forest mountain area in Santa Catarina. This study evaluated the bee community and their associated melliferous plants in the northern region of the state of Santa Catarina, Brazil in order to ascertain the diversity and floral interactions of the local Apidae. Twelve samplings were conducted (April 2006 to March 2007 in transects, where nets were used to capture bees directly from their flowers.Voucher specimens for both bees and plants were deposited at UNIVILLE. Diversity and equitability indexes were calculated. Our sampling effort resulted in a total of 934 bees in 72 genera and five families. Forty-four plant species belonging to 19 families were visited. A dominant family in Southern Brazil, Asteraceae, was visited most often (50% of the taxa). Nearly 20% of the plants were visited by only one bee species. Meliponina, Ceratinina and Halictinae were prevalent. The diversity of the apifauna composition (Apinae followed by Halictinae) is typical for southern environments, with few abundant species and many singletons. The variation found for the equitability indexes revealed low intertaxa dominance, diversity oscillation and interspecies relative equilibrium. Values of richness and abundance indicate a transitional distribution pattern (subtropical to temperate). Rare taxa, the presence of new records for the state, and the collector's slope indicate an estimated greater richness.

The pollen morphology of thirteen species of Cactaceae was studied: M. backebergiana F.G. Buchenau, M. decipiens Scheidw, M. elongata DC, M. gracilis Pfeiff., M. hahniana Werderm., M. marksiana Krainz, M. matudae Bravo, M. nejapensis R.T. Craig & E.Y. Dawson, M. nivosa Link ex Pfeiff., M. plumosa F.A.C. Weber, M. prolifera (Mill.) Haw, M. spinosissima var. “A Peak” Lem. and M. voburnensis Scheer. All analysed pollen grains are monads, with radial symmetry, medium size (M. gracilis, M. marksiana, M. prolifera, large), tricolpates (dimorphs in M. plumosa [3-6 colpus] and M. prolifera [3-6 colpus]), with circular-subcircular amb (quadrangular in M. prolifera and M. plumosa with six colpus). The pollen grains presented differences in relation to the shape and exine thickness. The exine was microechinate and microperforated. The pollen morphological data are unpublished and will aid in studies that use pollen samples. These pollen grains indicate ornamental cacti.

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traz à comunidade acadêmico-científica o segundo número de 2019. A ABC está sob responsabilidade de Comitê Editorial próprio e permanente, formado por docentes da Univille e membros externos. Seu principal objetivo é publicar artigos originais em todas as áreas relevantes das Ciências Biológicas voltadas a estudos sobre o meio ambiente e a biodiversidade, incluindo Aquacultura,

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traz à comunidade acadêmico-científica o primeiro número de 2018. A ABC está sob responsabilidade de Comitê Editorial próprio e permanente, formado por docentes da Univille e membros externos. Seu principal objetivo é a publicação de artigos originais em todas as áreas relevantes das Ciências Biológicas voltadas a estudos sobre o meio ambiente e a biodiversidade, incluindo

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