ABSTRACT. Bromeliad-associated mosquitoes (Diptera: Culicidae) (Dyar & Knab, 1908) apenas 1,36%. O estudo mostra a predominância de espécies de importância médica ainda não comprovada e a raridade de formas imaturas de anofelíneos. A pluviosidade, mas não a temperatura, influenciou positivamente a quantidade de formas imaturas em V. philippocoburgi. Este fator e a temperatura não influenciaram as quantidades obtidas em outras bromélias. Foram encontradas diferenças significativas na densidade de formas imaturas nas diferentes espécies de bromélias, sendo ressaltada a possível influência da forma da planta na abundância dos insetos. As seis espécies de Cx. (Microculex) obtidas são relatadas pela primeira vez no Estado de Santa Catarina, e as seis espécies de Wyeomyia (Phoniomyia) são relatadas pela primeira vez em bromélias neste estado.

Crepuscular period is one of the factors that may influence the biting activity of mosquitoes. Many of these insects have a peak activity in this period. The purpose of this study was to investigate the afternoon crepuscular activity of Culicidae in a remaining area of Atlantic Forest in western Santa Catarina, southern Brazil. Moreover, the possible influence of abiotic factors, the abundance and species richness were verified. In order to better analyze the influence of crepuscular period in specific composition and abundance of mosquitoes, the dusk was divided into three periods: pre-sunset, sunset and post-sunset. At the end of the study, nine hundred and eight four specimens distributed in 12 genera and 23 species were collected. Trichoprosopon pallidiventer (Lutz, 1905) (59.76%), Aedes crinifer (Theobald, 1903) (8.13%), Ae. scapularis (Rondani, 1848) (5.89%) were the most abundant species. Spring time presented the greatest abundance and species richness. During the study, among the three periods evaluated, pre-sunset had the greatest abundance and post-sunset the lowest. Pre-sunset and sunset had the greatest similarity between species. Regarding to the abiotic factors evaluated seven and 15 days before sampling, they did not present significant correlation for the three most abundant species. However, temperature had a positive correlation to these species. Moreover, the correlation between collected species and its possible role as vectors of etiological agents of diseases was discussed.Keywords: abiotic factors, Culicidae, Diptera, Hematophagy, Santa Catarina state. Mosquitos (Diptera

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INTRODUCTION: Besides mosquito species adapted to urban environments (Culex quinquefasciatus, Aedes aegypti and Aedes albopictus), only 15 species of Anopheles had been recorded in the State of Pernambuco. METHODS: Human-landing mosquitoes were collected in Dois Irmãos Park, in Recife. RESULTS: The first report for the state of Haemagogus janthinomys, an important vector of yellow fever virus, and 14 other species, including Trichoprosopon lampropus, a first reported for Brazil. CONCLUSIONS: The mosquito fauna in the area is diversified and has potential medical and veterinary importance.

Surveys to discover the habitats of mosquito species (Diptera: Culicidae) are useful for understanding their distribution, seasonality activity patterns, ecological interactions and the risk they pose for disease transmission. Therefore, in this study, we conducted a 1 year survey of mosquito species and analysed the seasonality and daily rhythms of four species found in a forest fragment from Southern Brazil. Collections were performed during the morning, afternoon, and evening, from October 2012 to September 2013. The most abundant species were Psorophora ferox, Aedes crinifer and Coquillettidia venezuelensis. Ae. crinifer was collected during all seasons, exhibiting diurnal and nocturnal activity in all seasons, except summer. Cq. venezuelensis was collected only in spring and summer and was primarily nocturnal. Haemagogus leucocelaenus, which transmits the Yellow Fever virus, was collected in spring, summer, and autumn; this species was primarily diurnal and was more active in the afternoon. Ps. ferox was collected in spring, summer and autumn and was primarily diurnal. Despite the low abundance of mosquito species at our study site, we consider that the knowledge about Culicidae fauna was improved, mainly regarding their biology. We provide new data about mosquito species in a specific area in Southern Brazil, which was once known to record deaths of non-human primates, a phenomenon that may be directly related to the presence of wild yellow fever vector mosquitoes.

Records of mosquitoes not related to malaria or filariasis in the two most southern states of Brazil (Santa Catarina and Rio Grande do Sul) are scanty. We report the finding of 18 species new for these states: Aedeomyia squamipennis, Ochlerotatus albifasciatus, Oc. fulvus, Oc. rhyacophilus, Oc. terrens, Psorophora lutzii, Runchomyia cerqueirai, Ru. theobaldi, Sa. melanonymphe, Trichoprosopon pallidiventer, Wyeomyia argenteorostris, Wy. bourrouli, Wy. cesari/moerbista, Wy. edwardsi, Wy. lutzi, Wy. quasilongirostris, Wy. tarsata and Wy. tripartita. Other species are referred for some peculiarity. Their possible medical and veterinary importance is commented.

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