Seasonal changes in species richness, composition, and abundance of male euglossine bees were determined by attracting individuals with cineole, eugenol and vanillin. The study was conducted at Estação Experimental de Zootecnia (EEZ), Municipio of Sertãozinho and at Santa Carlota Farm, Itaoca Section (SI), Municipio of Cajuru, State of São Paulo. Male euglossine bees were captured once every two weeks for one year in each site from 7:00 A.M. to 5:00 P.M. Males of 10 and 14 species were captured at EEZ and SI, respectively. All species sampled at EEZ were also found at SI showing that the areas were similar. Eulaema nigrita Lepeletier, Euglossa pleosticta Dressler and Euglossa fimbriata Rebêlo & Moure were the most abundant species in both areas, and they accounted for 80.3% and 90.6% of the males captured at SI and EEZ, respectively. In both areas the males were most abundant in autumn (53.8% of the total population at EEZ and 46.3% at SI) and the least abundant in winter (0.7% at EEZ and 4.8% at SI). Species richness and bee abundance by season were not significantly correlated in both areas. Cineole was the most attractive bait (9 species and 58.7% of the males captures at EEZ and 13 species and 71.5% of the males at SI) followed by eugenol and vanillin.KEY WORDS: Insecta, diversity, phenology, chemical baits. RESUMO -A composição, abundância e mudanças sazonais da fauna deEuglossini foram determinadas pela atração de machos por iscas de cineol, eugenol e vanilina. O estudo foi realizado em duas Reservas do Estado de São Paulo: Estação Experimental de Zootecnia (EEZ), município de Sertãozinho, e Fazenda Santa Carlota, Secção Itaoca (SI), município de Cajuru. As coletas foram realizadas a cada 15 dias, das 08:00 às 17:00h, durante um ano, em cada localidade. Machos de 10 e 14 espécies foram atraídos na EEZ e SI, respectivamente. Todas as espécies amostradas na EEZ ocorreram também na SI proporcionando um coeficiente de similaridade entre as áreas de 0,83. Eulaema nigrita Lepeletier, Euglossa pleosticta Dressler e Euglossa fimbriata Rebêlo & Moure foram as espécies mais abundantes em ambas as áreas, correspondendo a 80.3% da amostra total na SI e 90,6% na EEZ. Em ambas as Recebido em 24/10/96. Aceito em 10/06/97.

A precipitin test was employed to study the alimentary tract content of Lutzomyia longipalpis in the intra- and peridomiciliary environments in the municipality of Raposa, Maranh o State, a transmission area for visceral leishmaniasis or kala azar. Out of 2,240 female sandflies captured, 547 (24.4%) had fed on vertebrate blood, with the following proportions: avian (87.9%); rodent (47.2%); human (42.4%); canine (27.6%); opossum (26.6%); and equine (22.5%). Based on a survey of 120 human dwellings, chickens were found to be the most common domestic animals in the peridomicile (28.3%), followed by dogs (21.7%), cats (17.5%), donkeys (13.3%), pigeons (7.5%), rabbits (3.3%), ducks (3.3%), and horses, mallards, and pigs (1.7% each). Synanthropic animals included opossums (39.3%), followed by rats (37.9%), bats (14.3%), raccoons (3.6%), foxes (2.1%), snakes (1.4%), and frogs (1.4%). The peridomiciliary presence of domestic and synanthropic animals as well as sandflies that had fed on human, opossum, and canid blood supports the hypothesis that kala azar transmission has been taking place in the anthropic environment in the municipality of Raposa.

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).

In this work we record the highest number of bat flies species among those already performed in the Brazilian cerrado and discuss the associations and patterns of parasitism of these species and their hosts. A total of 1,390 ectoparasitic flies were collected, belonging to 24 species of Streblidae and one of Nycteribiidae, parasitizing 227 bats of 15 species. Among the species found, the presence of Trichobius sp. on Lonchophylla mordax and the first occurrence of Hershkovitzia sp. on Thyroptera devivoi are highlighted. Lophostoma species presented the highest proportion of individuals with infracommunities and the highest values of parasitological indexes. The high number of bat fly species and hosts, as well as the high values for rates of parasitism and infracommunities, suggests that this area of cerrado has good shelter conditions for these species. The abundance of species and high rates of parasitism detracts from the hypothesis that a higher mean intensity of ectoparasites results from lower competition among flies for hosts in areas with lower ectoparasite species richness. Biogeographical and historical factors of host populations, besides the number of host species and individuals sampled, may contribute to species number and intensity of parasitism.

Resumo Apresenta-se uma lista de flebotomíneos com 32 espécies, sendo 1 Brumptomyia e 31 Lutzomyia, distribuídas nos subgêneros Psychodopygus (6), Nyssomyia (5) ,