José l\1anuel l\1acário Rehêlo 2 Je'iUS S. l\loure 3 ABSTRACT. TIIE SPECIES OI' EUfil.OS.VI LATRElI.U: FROM T1IE NORTIIEAST OI' SÃO PAI•I.o. BRAZII. (A PIIl AI•.. El (iI.OSSI:-1AE). A k~y and shor\ d~scrirtions ar~giv~n lO th~males of the~leven sre<:i~s of ElIg/nsso L1tr~illle. I lI02. colic<:I~d in cin~ol~.

Dengue and Aedes aegypti are widespread in the State of Maranhão. During 1995, 87 of the 136 of the State's counties, including 176 towns and 480,687 households, were studied, of which 30 counties (34. 4%), 118 towns (67.0%) and 10,357 households (2.1%) were positive for Aedes aegypti. The positive counties are distributed as follow: 3 on São Luís Island, 7 in the Amazonia of Maranhão, 12 in the southern zone of the cerrados or savannas, and 5 in the mixed forest/savanna/palm grove zone. One positive county for Ae. aegypti was located in each of the following: alluvial fields, forest/palm grove, and sand dune/shoals areas. The Ae. aegypti-positive household rates were higher in the Amazonia of Maranhão (3.5%) and on São Luís Island (2.5%), because they are the most heavily traveled migratory and trade routes between Maranhão and neighboring states and are also the State's main economic centers. Household infestation rates for Ae. aegypti and reported dengue case rates were higher during the rainy season, showing the importance of rain in forming prime breeding sites for Aedes and spreading dengue.

A study was conducted in an early second-growth forest aiming at knowing the richness, relative abundance, seasonal distribution, and hourly frequency of euglossine bees, and their association with scent baits. Male bees were attracted to cineole, vanillin, methyl salicylate, and eugenol. The baits were hooked 1.5 m high and 6 m from one another. The specimens were collected from December 1997 to November 1998, once a month, from 7:00 to 17:00 h. A total of 339 male euglossine bees were caught, accounting for 19 species and four genera. The most common species was E. cordata, making up 69.9% of the individuals, followed by E. truncata (2.3%), E. violaceifrons, and E. smaragdina (2.1%). The most attractive scent was cineole, which baited 87% of the specimens and 73.7% of the species. Vanillin, the second most visited bait, eured 7.6% of the specimens and 26.3% of the species. E. surinamensis was only collected with this bait. Methyl salicylate and eugenol baited combined 2.6% of the specimens. However, by species numbers Methyl salicylate attracted 21% whereas eugenol was attractive for 15.8% of them. In general, the species were more abundantly found in the rainy season (January-June). The hourly activity data showed that the euglossine bees were attracted to the baits all day long, but at a higher frequency in the morning period, peaking between 8:00 and 10:00 h.

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Estudou-se a riqueza, a abundância relativa e a fonte alimentar sanguínea das espécies de Culicoides em áreas rurais e urbanas do polo turístico de Barreirinhas, Estado do Maranhão, Brasil, na região do Parque Nacional dos Lençóis Maranhenses. Os insetos foram capturados em ambiente peridomiciliar, utilizando-se armadilhas luminosas HP instaladas a uma altura média de 1,5 m, das 18 h às 6 h, nos anos de 2004 a 2007. O esforço de captura foi de 1.440 h. Foram capturados 7.964 indivíduos de 13 espécies. As mais abundantes foram Culicoides filariferus (30,7%), C. ignacioi (24,6%), C. insignis (13,8%), C. leopoldoi (12,8%), C. boliviensis (9,9%), C. foxi (4%) e C. paucienfuscatus (3,2%). As demais representaram 1% da amostragem. Os Culicoides sugaram sangue de mamíferos (54,3%, incluindo humanos, 11,2%) e aves (31,9%), sendo abundantes na zona rural, onde foram capturados, em média, 878,9 espécimes/ localidade, contra 18 espécimes/localidade na zona urbana. A elevada riqueza e abundância das espécies de Culicoides e a utilização de seres humanos e animais domésticos como hospedeiros sanguíneos indicam a necessidade de estudos entomológicos futuros para saber se o turismo, uma das principais atividades econômicas locais, vem afetando os habitats e provocando alterações na estrutura das comunidades desses insetos.