The effectiveness of the coccinellid beetle, Adalia bipunctata (L.), as a predator of the lime aphid, Eucallipterus tiliae L.

摘要: The two-spot coccinellid (Adalia bipunctata (L.)), will feed on a variety of aphid species but is usually associated with those living trees or shrubs greater than 2 m in height (Putnam 1964; Iperti 1966; Hodek 1966). In Glasgow, larvae this predator are common lime (Tilia x vulgaris Hayne), where they mainly the Eucallipterus tiliae and less often cicadellid Alnetoidea alneti Dahlbom. A. occurs frequently sycamore (Acer pseudoplatanus L.), its effects populations Drepanosiphum platanoides (Schr.) were described by Dixon (1970). numbers fluctuate markedly within season from year to (Dixon 1971), role predation these changes unknown. This paper attempts assess searching capacity survival lime, evaluate regulation aphid.