Abstract
The Chrysomelidae of New Caledonia are rich and unique, but insufficiently characterized. New species are being rapidly described, sometimes without careful study of the earlier taxonomic research. Karl M. Heller (Dresden, Germany) described in 1916 seven species of Eumolpinae which are redescribed here to distinguish them from other known species and to provide new information about sexual dimorphism and genitalic structures. New material is used to redefine their distribution. The males of Dematochroma lepros (Heller, 1916) and D. culminicola (Heller, 1916), and the female of D. difficilis (Heller, 1916) are described for the first time. Male and female genitalia are first described for seven and five species, respectively. D. difficilis (Heller,1916) stat. rev., is revalidated from previous synonymy with D. terastiomerus (Heller, 1916). Lectotypes are designated for/), humboldtiana and D. terastiomerus.
NSTL