Takagi, S. 1988 A possible case of site-caused polymorphism in Aulacaspis (Homoptera: Coccoidea: Diaspididae).. Insecta Matsumurana (New Series) 39: 49-63.

Notes: Abstract: Remarkably different forms of Aulacaspis, collected in Nepal on the twigs and leaves of Acer oblongum are referred to A. ligulata, new sp.; presents case of variation caused by feeding site.