Fauna de flebotomíneos (díptera: psychodidae) e morfometria geométrica das asas de lutzomyia longipalpis (Lutz e Neiva, 1912) de áreas antropizadas do município de Codó, Maranhão, Brasil

Abstract

Sandflies (Diptera, Psychodidae, Phlebotominae)are insects involved in the transmissionof leishmaniasis, and anthropogenic actions have caused to the dispersion and adaptation of vector species inareas with humansettlements. The objective was to conduct an entomological survey and analyze the morphometry of Lu.longipalpis wings in two areas in the city of Codó, Maranhão.Sandflies were collected intradomicile and peridomicile between October 2020 and January 2021.A total of 17,796 sandflies were captured, 17.89% in São Francisco and 82.11% in Montevidéo, distributedin five generaand six species. The abundance was higher in the rural area (82.1%), with the species Lu. longipalpis (rural=96.80% / urban=99.47%) and Ev. evandroi (rural=2.32% / urban= 0.28%) were the most abundant in both areas. The most frequent type of environment for sandflies was the peridomicile (94.56%). The type of chicken bait (rural=92.3%/urban=79.5%) had a higher occurrence of sandflies in both areas. The months of December and January showed a greater abundance of captured sandflies, coinciding with a decrease in temperature and an increase in humidity in the environment. For morphometric analysis, 140 specimens (60 females and 80 males) of Lu.longipalpis were used and all analyzes were performed separately by sex. Regarding the analysis of wing morphometry, wing anomalies were foundin two female specimens from Montevidéo.The canonical variables did not separate groups of male and female specimens, but the centroid size of male specimens from SãoFrancisco 1S was significantly larger than the other groups.Studies of the phlebotomine fauna contribute to more efficient measures for disease prevention and vector control, and data on the geometric morphometry of Lu. longipalpis will be a source of knowledge for future studies in the city of Codó, Maranhão.