Ecology And Distribution Of Simulium Erythrocephalum, A Health-Important Species In Western Spain

Simulium erythrocephalum (De Geer, 1776) is an arthropod of great medical-sanitary importance due to its
haematophagic way of feeding. The adults of this dipterans, which exhibit a marked anthropophilic behaviour, tends to emerge simultaneously, then usually producing massive attacks. In Spain there is a limited knowledge about its distribution and bioecology, situation that should be strengthened if it is taken into account the increasing incidence that is occurring in certain areas of the country. The main aim of this study is to contribute to the increase of the knowledge of this simuliid species, providing valuable information. The samplings revealed a scarce and reduced presence of the aforementioned species in the prospected area, located in western Spain, although it is utterly important not to abandon the monitoring of the populations of this dipteran. Additionally, considering its capacity to act as a vector of the filaria Onchocerca volvulus Bickel, 1982 (the parasitic pathogen responsible of human onchocerciasis) and although the helminth presence has not been reported in Spain, its epidemiological interest is discussed.