The genus is distinguished from other Macrosiphini genera (Aphididae, Aphidinae) because it has a supra-caudal process on abdominal tergite VIII which possesses two setae distally. It is Holarctic in distribution, and half of its species are Asian. The Chinese fauna of this genus, 17 species, have been restudied, morphologically and through DNA barcodes. As a result: Takahashi is transferred to ; Qiao & Xu, is described from specimens collected on and (Apiaceae); Zhang, Chen, Zhong & Li, and Zhang, Chen, Zhong & Li, are respectively junior synonyms of (Gillette & Bragg) and Takahashi; Zhang, Chen, Zhong & Li and Zhang are confirmed as valid species and complete descriptions are provided; Chakrabarti & Das, Basu, (Linnaeus), and Essig are recorded for the first time from China. Additionally, keys for species of known in China are provided and modifications to the key by Blackman and Eastop of aphid species on (Aphids on World's Plants) are presented.
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| http://dx.doi.org/10.3897/zookeys.1169.98552 | DOI Listing |
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