Takagi, S. 1979 A further study on the Horii-group of Fiorinia (Homoptera: Coccoidea: Diaspididae).. Insecta Matsumurana (New Series) 16: 1-32.

Notes: Reviewed 6 species; second instar males figured for four species; glandular and non-glandular types of these distinguished; dual pattern of abrupt and continuous changes recognized.