New records of Lucilia purpurascens and Lucilia ochricornis fly species of forensic interest for the province of Salta (Diptera: Calliphoridae), associated with different environmental and phenological parameters.

ACOSTA, X; ANDREA XIMENA GONZÁLEZ-REYES; CENTENO, N D; PALACIOS E; FLORES V; TEJEIRO N; OCHOA C; GARCÍA, I; ARANCIBIA C; CORRONCA, J A

Otro; XXXVI Reunión Científica Anual de la Sociedad de Biología de Cuyo; 2018

The species of flies of the genus Lucilia (Diptera: Calliphoridae) are of great forensic importance because of their affinity formeat. They are the first to find and deposit their eggs in the corpses, initiating the succession of species that invade it. The exactestablishment of the geographical distribution ranges is important for the realization of entomological skills. In Argentina, thespecies of the genus Lucilia were assigned alternately to L. cluvia or L. eximia, but in the last years, a complete revision for theNeotropical region proposed a complex of species: L. ibis, L. purpurascens, L. vulgate and L. ochricornis. Our objective was tomake catches using diverse environmental and phenological parameters to establish the presence or absence of the speciespreviously classified as L. cluvia for the province of Salta, in order to establish precise search criteria for future research. Wecarried out samplings from urban to rural and native environments, for two consecutive years and once a month during all themonths of the year (morning, noon and afternoon). We used decomposing bovine lungs as bait and carried out catches withentomological nets. Subsequently, individuals were placed in individual covered polyethene cups with fresh liver inside tocontrol oviposition. L. purpurascens appears strongly associated with all native environments, while L. ochricornis it is stronglyassociated with rural environments. Overlaps of both species occur in the area limits between the rural and native environments,with a preponderance of L. ochricornis. In the same way, L. ochricornis it appears scarcely in the peripheries of the city, close torural environments. We could observe a strong phenological effect throughout the year, because during the warmer months thesespecies are abundant in the catches, while in the coldest months they disappear (June and July). We could conclude that bothspecies have different distributional ranges and based on the variables considered; temperature, time of the day and sun exposure,shown a relationship with the abundance. Also the oviposition, for both species, is generally irregular in the number ofindividuals that achieve the set by capture, except in two summer months, where the lay of individuals by capture is usuallymaximun.