Published online by Cambridge University Press: 10 July 2009
In studies in southern England in 1967–77, the numbers of Lonchoptera lutea Panz. in cereal crops, such as winter wheat, fluctuated from year to year, depending on an adequate supply of food, provided by decaying litter, for the larvae and on sufficient rainfall to keep the soil surface moist during May and June. Much sunshine was unsuitable for larval growth. The larvae fed mainly on fungal spores and were able to breed in wheat litter in the laboratory. In years when many crop plants were attacked by shoot borers such as Delia coarctata (Fall.) and Oscinelta frit (L.), L. lutea was more numerous than when there were few. Although in most years more males than females appeared in emergence traps, more females than males were caught by sweeping and in light- and suction traps.