Malik Kamila, Bugaj-Nawrocka Agnieszka, Wieczorek Karina
Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Bankowa 9, 40-007 Katowice, Poland.
Insects. 2024 Jul 21;15(7):553. doi: 10.3390/insects15070553.
The Nearctic aphid genus Del Guercio, 1909, the largest within the subfamily Drepanosiphinae (Hemiptera: Aphididae), is characterised by distinctive dorsal abdominal tubercles. This study presents a comprehensive taxonomic revision of the genus, expanding the recognised species to 18, including the newly described Malik sp. nov. Detailed descriptions and figures for 44 morphs, encompassing alate viviparous females, oviparous females and males, are provided, with new identification keys for all known species and morphs. The sexual morphs of 15 species, particularly oviparous females, are documented for the first time. Morphometric and principal component analyses (PCA) are employed to distinguish the studied taxa. This study identifies and corrects numerous misidentifications in museum collections, previously labelled as , , , , , or . Furthermore, it revalidates the distinct status of and , which had been synonymised in earlier works. Current range maps for all species and images of key morphological features obtained through light and scanning electron microscopy are also presented, providing a more complete understanding of this understudied genus.
新北区蚜属（Del Guercio，1909年）是斑蚜亚科（半翅目：蚜科）中最大的属，其特征是腹部背面有独特的瘤。本研究对该属进行了全面的分类修订，将已知物种扩展到18种，包括新描述的马利克新种（Malik sp. nov.）。提供了44种形态的详细描述和图，涵盖有翅胎生雌蚜、卵生雌蚜和雄蚜，并为所有已知物种和形态提供了新的鉴定检索表。首次记录了15个物种的有性形态，特别是卵生雌蚜。采用形态测量和主成分分析（PCA）来区分所研究的分类单元。本研究识别并纠正了博物馆收藏中许多以前被标记为 、 、 、 、 或 的错误鉴定。此外，它重新确认了 和 在早期研究中被同义化的独特地位。还展示了所有物种的当前分布图以及通过光学显微镜和扫描电子显微镜获得的关键形态特征图像，从而更全面地了解这个研究较少的属。
