Enderlei Dec

Caracterização da Ilha das Flores, Baía de Babitonga, Santa Catarina, Brasil

Visando contribuir com o conhecimento sobre as ilhas da Baia da Babitonga, foi realizada uma caracterizacao morfometrica e biologica da Ilha das Flores por meio de compilacao de dados e visitas a campo. A ilha esta localizada no canal central da Baia da Babitonga, sob as coordenadas geograficas 26o15’25. 63’S e 48o41’17.91’O. Possui uma area de 9,15 ha, com formato irregular, perimetro de aproximadamente 1500 m, margeada por uma faixa de areia com largura variavel nos lados norte, sul e leste e rochas no lado oeste. Tem altitude maxima de 41 metros. Ocorrem cinco classes de uso e cobertura do solo: area construida, manguezal, cobertura de gramineas, vegetacao de terras baixas/restinga e area de solo exposto. Possui casas de veranistas. A vegetacao da Ilha das Flores e composta por especies de restinga, manguezais, floresta ombrofila densa de terras baixas e vegetacao secundaria e encontra-se preservada. Foram listadas 104 especies vegetais, nativas e introduzidas. Os dados obtidos podem contribuir com o entendimento sobre a evolucao da Baia de Babitonga.

New Geographical Records of Two Species of Eufriesea Cockerell, 1908 (Apidae: Euglossini) in Santa Catarina, Brazil, and the Use of a New Fragrance to Attract Orchid Bees

ABSTRACT:  The genus Eufriesea is usually represented by few species, and in most cases, by low number of individuals in samples collected from the Atlantic Forest biome, Brazil. The present study extends the geographic distribution of Eufriesea dentilabris (Mocsáry, 1897) and E. mussitans Fabricius, 1787, which are recorded for the first time in the southern state of Santa Catarina, Brazil. Males of E. dentilabris were collected with pollinia of Catasetum flowers (Orchidaceae). We discuss the use of a new aromatic bait with a mint base which is inexpensive and was attractive to four Euglossini species: Eufriesea dentilabris, Eufriesea violacea (Blanchard, 1840), Eulaema cingulata (Fabricius, 1804) and Eulaema nigrita Lepeletier, 1841.

Palynological characterization of species of Verbenaceae J. St.-Hil. and Lamiaceae Martinov (Lamiales Bromhead)

Clerodendrum splendens A. Chev., Clerodendrum x speciosum Tiej. & Binn, Clerodendrum thomsonae Balf. F., Clerodendrum ugandense L., Congea tomentosa Roxb., Duranta erecta L., Petrea volubilis L. and Petrea volubilis f. albiflora (Standl.) Standl. pollen grains were acetolyzed, photographed and measured under light microscopy and scanning electron microscopy. Values presented are averages in micrometers. Grains are monads, radially symmetrical, isopolar, large (C. ugandense, very large, C. tomentosa, small-medium and D. erecta, medium),tricolpate (P. volubilis f. albiflora, dimorphic grains with 3-4 colpus). Ambitus is circular (C. tomentosa and D. erecta, sub-circular, P. volubilis , triangular, P. volubilis f. albiflora, triangular-quadrangular). The form is oblate-spheroidal (C. splendens, C. x speciosum, C. ugandense), prolate-spheroidal (C. thomsonae), prolate (C. tomentosa), suboblate (D. erecta) and oblate (P. volubilis, P. volubilis f. albiflora). Exine thickness is in C. splendens 4,28, C. x speciosum 4,19, C. ugandense 4,33, C. thomsonae 4,18, C. tomentosa 1,4, D. erecta 1,55, P. volubilis 2,49, P. volubilis f. albiflora 2,68. Ornamentation is micro-echinate (C. splendens, C. x speciosum, C. thomsonae), echinate (C. ugandense), reticulate (C. tomentosa), psilate (D. erecta, P. volubilis, P. volubulis f. albiflora). Duranta and Petrea are close to Verbenaceae pattern, Congea to Lamiaceae and Clerodendrum loosely to Lamiaceae.