An annotated checklist of the Cook Islands psyllids with keys to the species and two new records (Hemiptera, Psylloidea) Author Martoni, Francesco Author Brown, Samuel D. J. text ZooKeys 2018 811 91 108 http://dx.doi.org/10.3897/zookeys.811.28829 journal article http://dx.doi.org/10.3897/zookeys.811.28829 1313-2970-811-91 7FC5DEBE45894AD48D7A69C5615FA737 Trioza cf. zimmermani Tuthill, 1942 Figure 24 Distribution. Reported on the Cook Islands by P.J. Dale ( McCormack 2007 ). Known only from Rarotonga. Host plant. Metrosideros collina (J.R. Forst. & G. Forst.) A. Gray ( Myrtaceae ). Remarks. no specimens of this psyllid were collected by the authors. Photographs provided by G McCormack were consistent with the morphology of T. zimmermani , with the greatest difference shown in the wings (Figures 24, 27), with the Rarotongan specimens being shorter and with a less acute apex (Figure 24), than those from Raivaevae drawn by Tuthill (1942 , Figure 27). However, since no specimens could be examined in person, this taxon is reported here based on the identification made by Dale. The distribution of T. zimmermani includes French Polynesia (Australs) ( Tuthill 1942 , Percy 2017 ). Figures 22-29. Wings, schematic. 22 Leptynoptera sulfurea (after Crawford 1919 ) 23 Syntomoza tahuata (from slide-mounted Rarotonga specimen) 24 Trioza cf. zimmermani (from photograph of Rarotonga specimen by G. McCormack) 25 Heteropsylla cubana (after Tuthill 1959) 26 Trioza alifumosa (from slide-mounted Rarotonga specimen) 27 Trioza zimmermani (after Tuthill 1942 ) 28 Mesohomotoma hibisci (after Froggatt 1901 ) 29 Trioza vitiensis (after Klyver 1932 ). Scale bar: 1 mm.