The morphology of larvae and systematics of the leaf-beetles Chrysolina tundralis and Chrysolina roddi (Coleoptera, Chrysomelidae, Chrysomelinae)

The 1st- and 4th-instar larvae of Chrysolina tundralis and Ch. roddi and the egg of the latter species are described for the first time; the instar-related changes of the larval morphology are discussed. The 4th-instar larva of Ch. tundralis is very similar to that of Ch. septentrionalis, but differs in the smaller sclerite-like plates of the abdominal segments and wider spaces between them (4–7 times as wide as a sclerite-like plate). The 4th-instar larva of Ch. roddi is very similar to that of Ch. pedestris, but differs in the dark brown coloration of the body and a fewer number of setae (9–12) in the dorsolateral areas of the meso- and metathorax. Data on the habitats and host plants of the larvae are given.