Lagenoderus

{{short description|Genus of beetles}}{{Italic title}}

{{Taxobox

| name = Lagenoderus

| image =

| image_caption=

| regnum = Animalia

| phylum = Arthropoda

| classis = Insecta

| ordo = Coleoptera

| superfamilia = Curculionoidea

| familia = Attelabidae

| subfamilia = Attelabinae

| genus = Lagenoderus

| genus_authority = White, 1841

}}

Lagenoderus is a genus of leaf-rolling weevil that is noted for being strongly sexually dimorphic. Species of this genus are all known from Madagascar. Females of Lagenoderus had been assigned to a different genus, Phymatolabus Jekel, owing to confusion due to the species' sexually dimorphic nature.