Morphology, taxonomy, and systematic position of the enigmatic aphid genus Sinolachnus (Hemiptera: Aphididae, Lachninae)

Abstract

Here, we present a revision of the poorly studied aphid genus, Sinolachnus from the tribe Tuberolachnini of the subfamily Lachninae (Hemiptera: Aphididae) modified to include eight species. Apterous and alate viviparous females of the type species S. niitakayamensis are redescribed together with alate viviparous females of Sinolachnus elaeagnensis. Alate viviparous females of a new species Sinolachnus takahashii sp. nov. and apterous and alate viviparous females of Sinolachnus yushanensis sp. nov. associated with Elaeagnus oldhamii, from Taiwan are described. Sinolachnus is, for the first time, recorded from Japan and the alate viviparous female of Sinolachnus nipponicus sp. nov. is described. Additionally, we recognize two other species of the Lachninae as members of this genus: Sinolachnus plurisensoriatus (Zhang, 1988) comb. nov. (= Cinara plurisensoriata Zhang, 1988) from China, and Sinolachnus rubi (Ghosh & Raychaudhuri, 1972) comb. nov. (= Maculolachnus rubi Ghosh & Raychaudhuri, 1972) from India. We have designated the lectotype for Sinolachnus niitakayamensis. For the first time, we have provided scanning electron microscopy analyses to show the morphology and sensilla of this genus. Following comparative analyses with other Tuberolachnini and Lachninae genera, we propose to transfer the genus Sinolachnus from the tribe Tuberolachnini to the Tramini. http://urn:lsid:zoobank.org:pub:ED1A226C-6DEA-4F17-9669-1D2E33E86566