What is "neochlamisus"

Leaf beetles of the genus Neochlamisus are sometimes known as the warty leaf beetles. They are members of the case-bearing leaf beetle group, the Camptosomata. Measuring 3-4 millimeters in length as adults, they are cryptic, superficially resembling caterpillar frass. 17, sometimes 18 species are presently accepted in this genus, all of them occurring in North America (including Mexico; some were previously in the genus Chlamisus).