EN
Some immatures stages of the baridiae tribe Madarini are described. The larvae and pupae of four genera are described for the first time based upon the following species: Athesapeuta cyperi Marshall. Madarellus undulatus (Say), Onychobaris ambigua Casey, and Orchidophilus sp. For each species important structural features of the larva and pupa are illustrated. Biological information and host associations for each of these genera are summarized. Previous work on the immature stages of Madarini is briefly reviewed. The tribe is characterized by a larval feature, the basally fused labral rods. Two genera usually placed in the Madarini, Ampeloglypter LeConte and Parisoschoenus Faust, lack this putative larval apomorphy and may belong to other tribes of the Baridinae.