蟲癭為植物受到昆蟲取食或產卵的影響，形成不正常生長的一種組織構造。蚜蟲（半翅目：蚜總科；Hemiptera: Aphidoidea)全世界已知有超過700種的造癭性種類，為造癭性昆蟲中ー個主要的類群，但是蚜蟲族群的發展過程具有形態多態型的現象，並牽涉寄主植物轉移和複雑的生活環型式，以致於對造癭性蚜蟲的鑑定與分類研究工作相當困難。目前臺灣對於造癭性蚜蟲研究僅扁蚜亞科的種類有較多的資料，其餘種類的造癭資料都付之闕如，本研究以南投縣鹿谷鄉溪頭及鄰近地區為主要調查範圍，進行蚜蟲蟲癭的全面採集及種類鑑定，在2012年期間，總共記錄球蚜科（Adelgidae)、常蚜科（Aphididae)和根瘤蚜科（Phylloxeridae)共7個已知種及2待鑑定種，包含球蚜科之球蚜屬1種(Adelges sp.)，常蚜科之常蚜亞科（Aphidinae)橘捲葉蚜{Aphis spiraecola Patch =Aph. citricola van der Goot)、棉蚜(Aph. gossypii Glover)、蓼蚜(Myzus formosanus Takahashi)和桃捲葉蚜(M. varians Davidson)，扁蚜亞科（Hormaphidinae)竹葉扁蚜(Astegopteryx bambucifoliae (Takahashi))和竹莖扁蚜(Pseudoregma bambucicola (Takahashi))，綿癭蚜亞科（Eriosomatinae)毛茛癭蚜(Colophina clematis (Shinji))及根瘤蚜科之1個待鑑定種，本文提供以上9種造癭性蚜蟲的形態特徴、蟲癭型式、寄主植物資訊和生活環過程等資料，期望逐步補全臺灣地區造癭性蚜蟲之研究資料。

Insect galls are abnormal outgrowth of plant tissues caused by insect feeding or ovipositing. Aphids (Hemiptera: Aphidoidea) are major galling insects and contain more than 700 galling species in the world. It is difficult to diagnose and classify the species of galling aphids because the polymorphism phenomenon exists during the period of host alternations in their life cycles. To date, the researches on the indigenous galling aphids in Taiwan are scarce except for the certain members of Hormaphidinae (Aphididae) species. Our goal is gradually to complement the cecidological information of the galling aphids in Taiwan. During 2012, authors have extensively surveyed species of galling aphids at Xitou and its vicinity (Lugu Township, Nantou County) and recorded an unidentified Adelges sp. which belongs to Adelgidae and seven species which belong to Aphididae, that is, Aphis spiraecola Patch =Aph. citricola van der Goot, Aph. gossypii Glover, Myzus formosanus Takahashi, M. varians Davidson (the above 4 species belong to Aphidinae), Astegopteryx bambucifoliae (Takahashi), Pseudoregma bambucicola (Takahashi) (the above 2 species belong to Hormaphidinae), Colophina clematis (Shinji) (Eriosomatinae), and an unidentified species of Phylloxeridae. Authors reprot the morphologies, gall illustrations, and the information on the host alternations and life cycles of the above nine aphid species.