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Umbonichiton hymenantherae (Maskell)

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Rough scale
[Umbonichiton hymenantherae]. Young adult female.

[Umbonichiton hymenantherae]. Young adult female.

William Maskell named this species in 1885, for one of its host plants, Hymenanthera. The common name "rough scale" is because the wax plates of the test (cover) are thick and pointed, like a rasp.

Biology: probably one generation per year.

Found on the underside of  leaves of:

Hedycarya arborea porokaiwhiri / pigeonwood
Hymenanthera sp.   
Melicytus ramiflorus māhoe / whiteywood
Myrsine divaricata  
Myrtus sp.