A new genus and two new species of felt scales (Hemiptera : Coccoidea : Eriococcidae) from Chile, with comments on zoogeographical affinities between the eriococcid faunas of southern South America and New Zealand

摘要

A new eriococcid genus (Chilechiton Hodgson & Miller) and the adult female, second-instar female and First-instar nymphs of two new species of Eriococcidae (Chilechiton lynnae on Nothofagus and Icelococcus lithreae on Lithraea) are described. Chilechiton is closely related to the New Zealand genus Eriochiton Maskell in tribe Eriochitonini, previously considered to be restricted to New Zealand. A phylogenetic analysis was undertaken to investigate the relationships of the Chilean and New Zealand eriococcid genera included in the study, the systematic boundaries of Eriochitonini and the relationship of Coccidae to Eriochitonini. The study suggests that the Chilean eriococcid fauna is closely related to that in New Zealand, Eriochitonini should be enlarged to include C. lynnae, genus Eriococcus is polyphyletic, Eriococcidae is monophyletic, and Coccidae and Eriococcidae are not closely related.