Blackman Roger L, Brown Paul A, Ramírez Claudio C, Niemeyer Hermann M
Department of Entomology, The Natural History Museum, London, UK.
Hereditas. 2003;138(1):6-10. doi: 10.1034/j.1601-5223.2003.01692.x.
The endemic South American aphid genus Neuquenaphis (Hemiptera, Aphididae, Neuquenaphidinae) forms an important component of the phytophagous insect fauna associated with southern beeches, Nothofagus (Nothofagaceae), but has not previously been studied cytologically. As part of ongoing studies of the taxonomy, evolution and host relationships of this genus, the karyotypes of 12 species are described and illustrated. Species are mostly distinguishable by differences in number and/or relative lengths of chromosomes, with 2n (female) numbers ranging from 6 to 16. The taxonomic and evolutionary significance of the karyotype variation in this group are discussed.
南美特有的蚜虫属内乌肯蚜属（半翅目，蚜科，内乌肯蚜亚科）是与南山毛榉属（南青冈科）相关的植食性昆虫区系的重要组成部分，但此前尚未进行过细胞学研究。作为对该属分类学、进化及寄主关系的持续研究的一部分，本文描述并展示了12个物种的核型。物种大多可通过染色体数量和/或相对长度的差异来区分，其二倍体（雌性）数量范围为6至16。本文还讨论了该类群核型变异的分类学和进化意义。
