Koteja, J. 1988c Eriococcid crawlers (Homoptera, Coccinea) from Baltic amber.. Polskie Pismo Entomologiczne 58: 503-524.

Notes: Five eriococcid species in three genera are established on the basis of first instar larvae embedded in Baltic amber: Gedanicoccus gracilis, Balticococcus oblicus, B. spinosus, Jutlandicoccus pauper and J. perfectus.