Takagi, S., Pong, T.Y., & Khoo, S.G. 1990 Genus Ulucoccus novum: a key form to diaspidid evolution (Homoptera: Coccoidea).. Insecta Matsumurana (New Series) 44: 1-15.

Notes: Abstract: New genus and 2 new species described: U. gombakensis & U. danumensis; represent an early evolutionary stage within the Diaspididae. Keywords: new gen./new sp.