Abstract
An annotated checklist of the psyllids of the Cook Islands is presented. The presence of Syntomozatahuata (Klyver, 1932) and Triozaalifumosa Klyver, 1932 in the archipelago, based on new material collected, is reported for the first time. This is the first record from these islands of the genus Syntomoza and the family Liviidae. An identification key to the psyllid species known from the Cook Islands is provided, and their origin and provenance are discussed in relation to their biogeographic implications.
Highlights
The superfamily Psylloidea (Hemiptera: Sternorrhyncha) is composed of almost 4000 described species worldwide (Ouvrard 2018)
Based on the similarity of the samples analysed with the description and the drawings provided by the literature, the presence of the psyllids Syntomoza tahuata and Trioza alifumosa is reported on the Cook Islands for the first time
Host plants for these two species in the Cook Islands are hypothesised to be Weinmannia samoensis or Homalium acuminatum and Metrosideros collina respectively, based on collection data
Summary
The superfamily Psylloidea (Hemiptera: Sternorrhyncha) is composed of almost 4000 described species worldwide (Ouvrard 2018). Due to the high movement of people and produce between the Cook Islands, New Zealand and Australia, understanding the biodiversity of the Cook Islands allows evaluation of potential biosecurity risks for New Zealand or Australian agriculture For these reasons, recent field collections from the Cook Islands presented in this work have contributed to updating our knowledge of the psyllid biodiversity of the Islands, with the discovery of two additional taxa: Syntomoza tahuata (Klyver, 1932), and Trioza alifumosa Klyver, 1932, both originally described from French Polynesia (Marquesas) (Klyver 1932)
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