Foldi, I. 1997a The Xylococcinae (Hemiptera: Coccoidea: Margarodidae): Analysis of species characteristics and descriptions of a new genus.. Annales de la Société Entomologique de France 33: 185-195.

Notes: A new genus, Jansenus, gen. n. is described for a new species Jansenus burgeri, sp. n. collected under the bark of Tamarindus indica L. from Thailand. First and second instars, nymphs and the adult female are described and illustrated. A key to the genera of the sub-family Xylococcinae is proposed. The phylogenetic position, biology, host plants, geographical distribution and economic importance of the species of Xylococcinae are discussed.