The vector competence of Aedes caspius and Aedes albopictus mosquitoes in Spain for the transmission of Zika virus was assessed. Whereas Ae. albopictus mosquitoes were a competent vector, Ae. caspius mosquitoes were unable to transmit Zika virus. High levels of vertical transmission of Zika virus in Ae. albopictus mosquitoes were also identified.informacion[at]ebd.csic.es: Gutiérrez-López et al (2019) Vector competence of Aedes caspius and Ae. albopictus mosquitoes for Zika virus, Spain. Emerg Infect Dis doi:10.3201/eid2502.171123