Abelhas Euglossinae De Barreirinhas, Zona Do Litoral Da Baixada Oriental Maranhense

Abstract

RESUMO -Machos de Euglossinac foram coletados nos cerrados da região de Barreirinhas, Zona do Litoral da Baixada Oriental Maranhense, com uso de cineol, eugenol, salicilato de metila e benzoato de benzila, como iscas. Foram encontradas 9 espécies distribuídas em 4 gêneros: Euglossa, Eufriesea, Eulaema e Exaerete. As mais comuns foram Euglossa cordata (63,31%), Eulaema ungulata (17,80%), Eulaema nigrita (7,63%), Euglossa modestior (4,94%) e Eufriesea ornata (4,16%). As demais, Euglossa chalybeata, Euglossa fimbriata, Euglossa melanotricha e Exaerete smaragdina, foram menos freqüentes, representando juntas 2,16% da amostra total. As abelhas estiveram ativas nas duas estações, seca e chuvosa, sendo mais abundantes na última. Cineol atraiu 78,2% dos machos (8 espécies), eugenol, 19,9% (5 espécies), salicilato de metila 1,3% (1 espécie) e benzoato de benzila 0,6% (2 espécies). Palavras-chave: Abelhas, Euglossinae, iscas odoríferas, MaranhãoThe Euglossinc Bees of Barreirinhas, Western Coastal Lowland Zone of Maranhão State, Brazil ABSTRACT -Male euglossine bees were collected in the savannas (Cerrado) of Barreirinhas, in the western coastal lowland zone of Maranhão State. Animals were baited with cineole, eugenol, methyl salicylate and benzyl benzoate. Nine species belonging to 4 genera were found. Euglossa cordata was the most abundant (63,31%), followed by Eulaema cingulata (17,80%), Eulaema nigrita (7,63%), Euglossa modestior (4,94%) and Eufriesea ornata (4,16%). The others Euglossa chalybeata, Euglossa fimbriata, Euglossa melanotricha and Exaerete smaragdina, were less frequently found, representing only 2,16% of the total sample (combined). The bees were active in both the rains and dry seasons, especially on the first. Cineole was the most attractive aromatic compound (78,2% of specimens and 8 species), followed by eugenol (19,9% and 5 species), benzyl benzoate (0,6% and 2 species) and methyl salicylate (1,3% and 1 species).

Euglossine Bees (Hymenoptera: Apidae) of Buriticupu, Amazonia of Maranhão, Brazil1

“…The second occurs in Panama (Ackerman, 1983;Roubik & Ackerman, 1987) and Amazonia (Braga, 1976;Oliveira & Campos, 1995). The latter species has been recorded only in the Amazon Basin (Braga, 1976;Oliveira & Cam pos, 1995), Atlantic Forest in south Brazil (Kimsey, 1982) and in Barreirinhas, coastal zone of Maranhão State (Rebelo & Cabral, 1997 The others species studied in this paper (Tab. 1) were found in different ecosystems in Maranhão State (see Rebelo & Cabral, 1997).…”

“…The current study although utilizing only 5 scent baits and carried out at the boundaries of an open area in the for est environment, sampled 37 species, of which 15 were not found in the Central Amazonia. These differences may be due to the transitional position occupied by Maranhão among the macro-regions (Amazonian Forest, Cerrado and Caatinga) which character ize Brazil, since the fauna encountered in Buriticupu, although dominant by Amazonian species, also possesses com mon elements from the northeast and central-south Brazil fauna, as already observed by Rebelo & Cabral (1997).…”

“…In Maranhão the standardized studies (including monographic works) have been initiated only within the last decade, providing a consistent information on the composition of euglossine species in the northern sec tion of the state (Gonçalves et al, 1996;Rebelo & Cabral, 1997).…”

Levantamento da fauna de Abelhas silvestres (Hymenoptera, Apoidea) na região da "Baixada Maranhense": Vitória do Mearim, MA, Brasil

“…4). Outros trabalhos realizados com Euglossinae em Manaus -AM (Braga, 1976;Morato et al, 1992), Salvador -BA (Raw, 1989), Cajuru -SP (Rebelo & Garófalo, 1991) e Barreirinhas -MA (Rebelo & Cabral, 1997) (Fig. 6).…”

“…e no cerrado de Barreirinhas (Albuquerque & Mendonça, 1996;Rebelo & Cabral, 1997). Segundo Ab'Saber (1987), a Baixada Maranhense em seu sentido mais amplo, corresponde a importante faixa de planícies de nível de base, formadas a partir dos fundos de uma paleorreentrância regional da costa maranhense, parcialmente colmatada por depósitos fluviais, flúvio-lacustres e flúvio-marinhos.…”