The Arescini and Cephaloliini are 2 closely related tribes of hispine chrysomelid beetles, parasitic on Zingiberales [a tropical group of 8 distinct Families, the Costaceae, Zingiberaceae, Marantaceae, Cannaceae, Heliconiaceae, Sterilitziaceae, Lowiaceae and Musaceae] in the New World tropics. These "rolled-leaf Hispinae" live in and feed from the scroll-like immature leaves of Zingiberales. Adults are flat and less spiny or sculptured than most other Hispinae, tropical or temperature. Larvae are grossly flattened and morphologically suited for life between the appressed host plant surfaces. Larvae do not burrow into the plant tissues but live and feed from the surface of host organs, as do adults, by reciprocal scraping with the mandibles. Host species specificity varies from monophagous to polyphagous within Zingiberales families for both larvae and adults. Some species change host species geographically. It is rare for one beetle species to attack plants in more than one Zingeberales family. Species richness of beetles is corrected with host-species range, size and diversity.