Revision of leaf beetles from the poorly studied Chrysolina (Sahlbergiana) species group in the subgenus Pezocrosita (Coleoptera, Chrysomelidae)

The subgenus Pezocrosita Jacobson 1901, genus Chrysolina Motschulsky 1860, is known to presently include 38 species, being divided into seven species groups. Among them, the Chrysolina (sahlbergiana) group remains the least studied, although it comprises the type species of the subgenus. The latter,...

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Bibliographic Details
Main Authors: Mikhailov, Yu. E., Reshetnikov, S. V., Михайлов, Ю. Е., Решетников, С. В.
Format: Article in Journal/Newspaper
Language:Russian
Published: Izdatel'stvo Nauka 2021
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Online Access:https://elar.usfeu.ru/handle/123456789/12377
Description
Summary:The subgenus Pezocrosita Jacobson 1901, genus Chrysolina Motschulsky 1860, is known to presently include 38 species, being divided into seven species groups. Among them, the Chrysolina (sahlbergiana) group remains the least studied, although it comprises the type species of the subgenus. The latter, Chrysolina sahlbergiana (Jacobson 1901), is shown to encompass two subspecies: C. sahlbergiana sahlbergiana and C. sahlbergiana jacobsoni (Lopatin 1970). Chrysolina hyperboreica Mikhailov 2002, the local species endemic to the northern Ural Mountains within the Sverdlovsk Region, and previously known from the male holotype alone, is redescribed based on new material. A new species, C. korgonica sp. n., is described from the western Altais. A key is given to all four species of the group. The relict character of the Chrysolina (sahlbergiana) group is discussed based on its disjunct species distributions and their relations to former tundra-steppe communities. © 2021 Izdatel'stvo Nauka. All rights reserved. Подрод Pezocrosita, первоначально выделенный Г.Г. Якобсоном в роде Crosita, позже был перенесен в род Chrysolina и в настоящее время включает 38 видов. Pezocrosita разделен на 7 видовых групп, среди которых группа Chrysolina (sahlbergiana) остается самой малоизученной, хотя включает типовой вид подрода. У Ch. sahlbergiana нами показано существование двух подвидов. Дано переописание локального эндемика гор Северного Урала в Свердловской области Ch. hyperboreica Mikhailov, ранее известного по единственному самцу. Из Западного Алтая описан новый вид Ch. korgonica sp. n. Приведен определительный ключ видов группы, обсуждаются реликтовый характер ее разорванного ареала, его связь с тундростепными сообществами.