Hedicke, H., and G. Kerrich. 1940. A revision of the family
Liopteridae (Hymenopt., Cynipoidea). Transactions of the Royal
Entomologocal Society, London 90: 177–228.
Pujade-Villar, J., Ros-Farré, P. &
Brandao, C.R.F. 2000. Notes on Brazilian Liopteridae (Hymenoptera:
Cynipoidea), with the description of Pseudibalia angelicae n. sp.
Papéis avulsos de zoologia (Brasil) 41(19): 289-301.
Ronquist, F. 1995. Phylogeny and classification of the
Liopteridae, an archaic group of cynipoid wasps (Hymenoptera).
Entomologica Scandinavica Supplement 46: 1-74.
Ronquist, F.
1999.
Phylogeny, classification and evolution of the Cynipoidea. Zoologica
Scripta 28:139–164.