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Anelaphus villosus (Fabricius) and A. parallelus (Newman) (Coleoptera: Cerambycidae) can be accurately distinguished using body measurements and DNA barcoding
Published online by Cambridge University Press: 28 July 2021
Abstract
Anelaphus villosus (Fabricius) and A. parallelus (Newman) are longhorned beetles (Coleoptera: Cerambycidae: Cerambycinae: Elaphidiini) that closely resemble each other in appearance. In practice, if antennomere 3 is distinctly longer than antennomere 4, the specimen is considered to be A. villosus, but the accuracy of this methodology is unknown. Authorities disagree about the ease of separating these two species based on morphological traits, and recent work hypothesises that they should be synonymised due to the difficulty of distinguishing them by either morphology or natural history. Assuming correct initial species determinations of curated specimens, as well as of those determined with DNA barcoding and by the primary author, data from 23 body measurements were collected from 50 A. villosus and 60 A. parallelus specimens. Stepwise discriminant analyses and discriminant functions were used to evaluate the ability to distinguish these species based on morphology. Species assignments from discriminant functions were very accurate and were supported by assignments determined with DNA barcoding. The ability to distinguish A. villosus and A. parallelus based on morphological and molecular differences provides evidence against the taxonomic hypothesis of synonymy under one species. A need for greater ecological understanding of these species remains.
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- Research Paper
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- © The Author(s), 2021. Published by Cambridge University Press on behalf of the Entomological Society of Canada
Footnotes
Subject Editor: Andrew Smith
ZooBank registration number: urn:lsid:zoobank.org:pub:C16F399D-1C4F-426D-9A64-AC478794ECE2
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Brown et al. supplementary material
Brown et al. supplementary material
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