Abstract
Oropouche fever is an emerging zoonotic disease caused by Oropouche virus (OROV). It has two distinct transmission cycles, with the anthropophilic biting midge Culicoides paraensis (Goeldi) (Diptera: Ceratopogonidae) being the primary vector in the urban cycle. Species identification of Culicoides typically has been carried out on the basis of morphological characters, but molecular tools applied to taxonomy can provide rapid and efficient methods to the identification of vector species. The aim of this work was to obtain the first DNA barcode for C. paraensis collected in Argentina and redescribe the larvae and pupae of this species. Nested PCR amplification was applied in this study to increase the DNA amplification, because the material was preserved in alcohol 70% for a long period of time. The immature stages of C. paraensis are fully described from material collected in Misiones province, Argentina. Both stages are compared with their most similar congeners. This COI sequence complements the identification based on morphological characters and the values of genetic distance between the analysed species show that this sequence is useful to discriminate between species of the Culicoides genus.
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