Superfamily Vespoidea feeding on sugar-solution in bird-feeders. Head 3.8, thorax 4.8, abdomen 9.0 = 17-18 mm total; wing 16.7 mm. Mirador Cinchona: (N10.22222° W84.16715°, 1353m asl), viewing across Rio Sarapiqui, Prov. Alajuela, Costa Rica.
3rd image is from around 2hrs earlier the same morning