First representative of the American genus Dicentrus in Europe
Dicentrus mehli sp. n. (Coleoptera: Cerambycidae) implies close trophic association between Opsimini and Calocedrus, dating the Baltic amber back to the Early Oligocene. (Vitali & Damgaard, 2016)
Subfamily Cerambycinae Latreille, 1802 Tribe Opsimini LeConte, 1873 Genus Dicentrus LeConte, 1880 Dicentrus mehli sp. n. (2016)
Etymology This new species is dedicated to the recently departed specialist in Fennoscandian cerambycids Ole Mehl.
A new fossil cerambycid from Baltic amber, Dicentrus mehli sp. n. (Cerambycinae, Opsimini) is described and compared to extant congeners. This species is characterised by larger eyes, narrower inter-ocular space and shorter pedicle and, possibly, uniform colouring. This discovery allows confirming and pointing out the assumed hypotheses concerning the evolution of the Opsimini. In particular, the assumed association with fossil Calocedrus implies to dating the Baltic amber back to the Early Oligocene
Until short time ago, the tribe Opsimini was known for its split relict distribution at both sides of the Pacific Ocean, being present with a genus (Japonopsimus Matsushita, 1935) and three species in western Asia and two genera (Opsimus Mannerheim, 1843 and Dicentrus LeConte, 1880) and three species in Vancouverian. The discovery of two fossil species in succinite (Europsimus germanicus Vitali, 2011 and Japonopsimus balticus Vitali, 2014) suggested that this tribe has not transBeringian distribution, as it appears today, but a Tertiary origin in Laurentia or probably, only in Europe (Vitali 2011, 2014).
In this paper, the discovery of a third fossil species in succinite reveals that the extant Vancouverian genus Dicentrus was already present in Europe during the late Tertiary.
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