part of adult mesothoracic wing crossvein A short, usually transverse vein between two longitudinal veins. In mosquitoes, the usual crossveins are the humeral crossvein between the costa and subcosta, the radiomedial crossvein between the radius and media and the mediocubital crossvein between the media and cubitus. TGMA:0000472 TGMA:0000472 cross-nervure default_namespace transverse-vein