part of cuticular specialization orbital ridge frontal orbital ridge 2023-10-26T08:41:05Z Front part of the orbital ridge (Fenk et al., 2022). It has strongly sclerotized parts and is attached to two retinal muscles (Fenk et al., 2022). It is separated from the rear part of the orbital ridge by discontinuities at the dorsal and ventral poles (Fenk et al., 2022). fly_anatomy.ontology FBbt:00052680 front of the orbital ridge