biostudies-literatureUnknownPercy DMThe Hawaiian psyllids (Psylloidea, Triozidae) feeding on Metrosideros (Myrtaceae) constitute a remarkable radiation of more than 35 species. This monophyletic group has diversified on a single, highly polymorphic host plant species, Metrosideros polymorpha. Eleven Metrosideros-feeding species included in the Insects of Hawaii by Zimmerman are redescribed, and an additional 25 new species are described. Contrary to previous classifications that placed the Metrosideros-feeders in two genera, Trioza Foerster, 1848 and Kuwayama Crawford, 1911, all 36 named species are placed in Pariaconus Enderlein, 1926; and the relationship of this genus to other Pacific taxa within the family Triozidae, and other Austro-Pacific taxa feeding on host plants in Myrtaceae is clarified. The processes of diversifZooKeys1-163https://www.ebi.ac.uk/biostudies/studies/S-EPMC5345378biostudies-literatureMaking the most of your host: the <i>Metrosideros</i>-feeding psyllids (Hemiptera, Psylloidea) of the Hawaiian Islands.PMC5345378Percy DMfalseMaking the most of your host: the <i>Metrosideros</i>-feeding psyllids (Hemiptera, Psylloidea) of the Hawaiian Islands.The Hawaiian psyllids (Psylloidea, Triozidae) feeding on Metrosideros (Myrtaceae) constitute a remarkable radiation of more than 35 species. This monophyletic group has diversified on a single, highly polymorphic host plant species, Metrosideros polymorpha. Eleven Metrosideros-feeding species included in the Insects of Hawaii by Zimmerman are redescribed, and an additional 25 new species are described. Contrary to previous classifications that placed the Metrosideros-feeders in two genera, Trioza Foerster, 1848 and Kuwayama Crawford, 1911, all 36 named species are placed in Pariaconus Enderlein, 1926; and the relationship of this genus to other Pacific taxa within the family Triozidae, and other Austro-Pacific taxa feeding on host plants in Myrtaceae is clarified. The processes of diversif2017-01-01T00:00:00Z20172026-05-18T03:13:20.256Z2019-03-27T02:38:24ZS-EPMC53453782832597010.3897/zookeys.649.10213