Abstract
The genus Zorion Pascoe (Cerambycidae: Cerambycinae), commonly known as flower longhorn beetle, is endemic to New Zealand where it is widely distributed on the main and some offshore islands. A taxonomic revision of Zorion adults is given, including a description and illustrations of the genus. The previously known species Z. batesi Sharp, Z. guttigerum (Westwood), Z. minutum (Fabricius), and Z. opacum Sharp are redescribed; Z. castum Broun is synonymised with Z.guttigerum. Lectotypes are designated here for Z. guttigerum and Z. opacum. Six new species are described, Z. angustifasciatum sp. nov. from Three Kings Islands, Z. australe sp. nov. from South Island, Z. dugdalei sp. nov. from Poor Knights Island, Z. kaikouraiensis sp. nov. from the Kaikoura region, Z. nonmaculatum sp. nov. from D’Urville Islands, and Z. taranakiensis sp. nov. from the Taranaki region. The species Z. exiguum Gmelin has been excluded from the study because neither the original description nor the holotype could be located. A key to all ten species is included and diagnostic elytral spot patterns are illustrated. Biological information presented is based on publications, collecting records and our observations. A distribution map for all species is included and species distribution is discussed in relation to New Zealand’s biogeographical history.References
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