Preliminary observations on the grassland leaf hopper fauna of the central North Island Volcanic Plateau [New Zealand]
1989
Prestidge, R.A. (Ruakura Agricultural Centre, Hamilton (New Zealand))
Sweepnet samples were taken from cocksfoot (Dactylis glomerata L.), yorkshire fog (Holcus lanatus L.) and perennial ryegrass (Lolium perenne L.) pastures from March 1984 to February 1986. The Auchenorrhyncha (leafhopper, froghopper, planthopper) fauna was sorted to species level. Arawa novella (Metcalf), Zygina zealandica (Myers), Nesoclutha pallida (Evans), and Deltocephalus hospes Kirkaldy formed 99.5% of all the specimens captured. All species except Z. zealandica were bivoltine and overwintered in the egg stage. Z. zealandica was multivoltine and overwintered as an adult. All species were present on all grasses sampled although the number of D. hospes and N. pallida were considerably less on the ryegrass. Cocksfoot and yorkshire fog had almost 3-4 times as many leafhoppers as the ryegrasses. A novella was the only species to contain parasitoids. Only 30 individuals were parasitised out of 717 examined
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