CONICET | Buscador de Institutos y Recursos Humanos

Phlebotominere distributed in Argentina to 29ºNL in ecoregions with leishmaniasis records where Chaco province (24°28´S, 58°63´W) is included. It is divided in two sub-regions: eastern Humid Chaco with humid Atlantic rainfall pattern (1200 mm/year) in summer and autumn, and western Dry Chaco with semiarid continental rainfall pattern (500?800 mm/year) in autumn and winter. This pluviometric gradient marks a transitional area with gallery forests where monthly abundance and diversity of Phlebotominae according to climatic variables were studied. It was carried out from 2011 to 2014 in Tres Isletas town (26°20´S,60°25´W) and Pampa del Indio town (26°02´S; 59°56´O) in two houses with leishmaniasis records. Five CDC light trap was installed at indoor or veranda, peridomicile and forest (base and canopy of one tree) during 12h on crepuscular times for 2 or 3 consecutive nights. Monthly Relative Humidity (RH%), accumulated monthly Precipitations (PPT.), Minimum Temperature (Min.T), Maximum Temperature (Max.T) and monthly average Temperature (Med.T) were requested to the nearest weather stations. A total of 44,938 Phlebotominae were collected: Migonemyia migonei (72,21%), Nyssomyia neivai (18,89%), Evandromyia cortelezzii/sallesi (4,11%), Ev. cortelezzii (2,54%), Ev. sallesi (1,34%), Brumptomyia brumpti (0,82%), Ev. aldafalcaoae 0,04%), Psathyromyia bigeniculata (0,02%), Ev. corumbaensis (0,02%) and Ev. termitophila (0,01%). The first three species were captured all months and the rest were not frequent. Migonemyia migonei (n=32,448) predominated in both sites, every year in autumn and spring on March/September (2011-12) and March/October (2012-14). Nyssomyia neivai (n=8,491) in autumn and summer on March (2013) and December (2013). Cortelezzii complex (Ev. cortelezzii and Ev. sallesi) in autumn and summer on April/December (2011) and spring and summer on October/November (2012). The other species (

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