Study of phlebotomines (Diptera, Psychodidae) in the urban area of Bonito municipality. Mato Grosso do Sul, Brazil.

The objective was to identify the urban phlebotomine sandfly fauna of the Bonito municipality. Mato Grosso (10 Sul, Brazil. The captures of insects were undertaken fortnightly from March 2005 to February 2006, with automatic light traps in 17 ecotopes distributed in 12 sites: three in the Central district and nine in different outskirt districts. A total of 2,690 specimens were captured (2,283 males and 397 females) belonging to 12 species, Brumptomyia avellari, Brumptomyia brumpti, Bichromomyia flaviscutellata, Evandromyia corumbaensis, Evandromyia sallesi, Lutzomyia longipalpis. Micropygomyia acandropharynx, Micropygomyia quinquefer Nyssomyia whitmani, Psathyromyia aragaoi. Psathyromyia. a punctigeniculata and Psathyromvio shannoni. Lutzomyia longipalpis, vector of the American visceral leishmaniasis agent, was the most frequent species (93.5%) and also the most abundant with the standardized index of species abundance (SISA) = 0.85. Its most expressive frequencies occurred near to hen-houses and pigpens, and was captured in all months of the year, with peaks in summer. winter or spring. Nyssomyia whitmani presented low frequency (0.22%) and it was captured only at the border of urban perimeter in forest fragments and peridomiciles surroundings of savannah and forests. Bichromomyia flaviscutellata was captured inside and close to remaining forests. peri and intradomicile. That fact is of high epidemiological relevance, considering that this species is the most important vector of Leishmania (Leishmania) amazonensis, etiological agent of anergic diffused cutaneous leishmaniasis. Therefore, two vector species of leishmaniasis were found in the urban area of Bonito: Lutzomyia longipalpis and Bichromomyia flaviscutellata. both naturally infected by the respective agents.