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Rose scale (order Hemiptera: family Coccoidea) Aulacaspis rosae – Mainly found on the stems and branches of the plant, lack of control will allow the pest to spread to flower stalks and petioles. At this point the plant would be stunted, spindly and with a white, flaky crust of scales on the bark.
Grubs grow up to 1 cm in length, have a slightly curved, legless body and are creamy white in colour with a tan-brown head. They live below the soil surface, and feed on roots and cambium at the base of trunks. They mostly cause damage to herbaceous plants, particularly those growing in containers, where root growth is restricted.
Maladera formosae, commonly known as the Asiatic garden beetle and formerly known as Maladera castanea, is a species of beetle in the family Scarabaeidae.It is native to Japan, China, South Korea, North Korea, and Russia but was introduced to North America in the 1920s where it is considered a pest of turfs, gardens, and crop fields.
Diplolepis rosae is a gall wasp which causes a gall known as the rose bedeguar gall, bedeguar gall wasp, Robin's pincushion, mossy rose gall, or simply moss gall. [ 1 ] [ 2 ] The gall develops as a chemically induced distortion of an unopened leaf axillary or terminal bud, mostly on field rose ( Rosa arvensis ) or dog rose ( Rosa canina ) shrubs.
Larvae feed on roots and can weaken or kill smaller plants. They are whitish, C-shaped, and about 8 mm long when full grown, much smaller than white grubs. They pupate in the upper layers of soil in the spring and change into adults later in the spring or in summer, joining the adults of the previous summer to feed on leaves and fruit.
Costelytra giveni is endemic to and found throughout New Zealand. There are, however, similar species found in other countries like Acrossidius tasmaniae, the Tasmanian grass grub found in Tasmania, Australia. Grass grubs prefer altitudes below 1200m, with favored soil types being free-draining loam soils, but they are also found in peaty or ...
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Lists of the plant species found in Ireland can be found at Irish Species Register The lists on this site are based on these "Key references" Scannell, M.J.P. & Synnott, D.M. (1987). Census catalogue of the flora of Ireland.