Four new species of Alloxysta Förster are described (A. andrewsi Ferrer-Suay & Pujade-Villar n. sp., A. costaricensis Ferrer-Suay & Pujade-Villar n. sp., A. hansoni Pujade-Villar n. sp. and A. luismii Ferrer-Suay n. sp.) from Costa Rica being the first records of this genus in this area. Their morphological features and diagnostic characters are illustrated. We provide a diagnosis of Apocharips hansoni Menke with a detailed description of the radial cell, which expands the characteristics of the genus Apocharips.