Antennae of various genera and species of moss-inhabiting flea beetles showing various level of antennal club formation A Ivalia besar B Ivalia lescheni C Ivalia iridescens D Ivalia uenoi E Ivalia antennata F Mniophilosoma laeve G Borinken elyunque H Clavicornaltica doeberli I Kiskeya baorucae.