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2. Cotinis nitida - Wikipedia

   en.wikipedia.org/wiki/Cotinis_nitida

   The grubs of the beetle are largely held in control by natural predators. [4] Adult beetles are often eaten by birds, including robins, blue jays, and brown thrashers. Blue jays either immediately consume the beetle or repeatedly slam them into the ground before eating them. [2]

3. Costelytra giveni - Wikipedia

   en.wikipedia.org/wiki/Costelytra_giveni

   Because grass grub build up large colonies in the soil, disease can spread quickly and be devastating to the population. The most common disease of the New Zealand Grass Grub is Amber disease. Amber disease is a chronic infection of the stomach of grass grub larvae, and is caused by two strains of bacteria, Serratia entomophila and S ...

4. DDT in New Zealand - Wikipedia

   en.wikipedia.org/wiki/DDT_in_New_Zealand

   DDT was used extensively for agricultural use in the 1950s and 1960s to control grass grub and porina moth. It was also used on lawns and for market gardens. Some 500 tons was being applied annually by 1959. [1] By the 1970s its use was restricted and was banned in 1989. [2]

5. Costelytra zealandica - Wikipedia

   en.wikipedia.org/wiki/Costelytra_zealandica

   Costelytra zealandica (commonly known as the grass grub) [1] is a species of scarab beetle found in forested areas of greater Wellington. [ 2 ] [ 3 ] It was originally described in 1846 by the British entomologist Adam White as Rhisotrogus zealandicus from a specimen obtained during the Ross expedition . [ 4 ]

6. List of pest-repelling plants - Wikipedia

   en.wikipedia.org/wiki/List_of_pest-repelling_plants

   They have been used in companion planting as pest control in agricultural and garden situations, and in households. Certain plants have shown effectiveness as topical repellents for haematophagous insects, such as the use of lemon eucalyptus in PMD, but incomplete research and misunderstood applications can produce variable results. [1]

7. Cockchafer - Wikipedia

   en.wikipedia.org/wiki/Cockchafer

   The larvae, known as "chafer grubs" or "white grubs", hatch four to six weeks after being laid as eggs. They feed on plant roots, for instance potato roots. The grubs develop in the earth for three to four years, in colder climates even five years, and grow continually to a size of about 4–5 cm, before they pupate in early autumn and develop ...