Morphometric discrimination of two sympatric sibling species in the Palaearctic region, Culicoides obsoletus Meigen and C. scoticus Downes & Kettle (Diptera : Ceratopogonidae), vectors of bluetongue and Schmallenberg viruses - Kluiters, G. (University of Liverpool. Institute of Infection and Global Health) ; Pagès Martínez, Nonito (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal) ; Carpenter, Simon (The Pirbright Institute (Regne Unit)) ; Gardès, Laëtitia (INRA) ; Guis, H. (INRA) ; Baylis, Matthew (University of Liverpool. Health Protection Research Unit in Emerging and Zoonotic Infections) ; Garros, Claire (INRA)