and can infect a range of host crops. Many species are considered weak pathogens and can only infect wounded or stressed host plants. Life cycle and…
lifecycle showing complex interactions with environmental conditions and host plant physiology. Typically, the lifecycle begins with the release of…
produced) lifecycles. There is no alternation of hosts, and the two types of life cycles occur on the same host plant. The aphid can overwinter not…
greenhouse crops. The aphid may originate from Asia, where its winter-hardy host plant, the peach tree, is native, however it is now a pest with a…
leaf tunnel depends on the stage of development of the leaf, the species of host plant and the species of leaf miner. The older larvae make wider…
c meshes spun on the surface of the leaves or on the flower-stalk of the host plant. The pupa is 7-8 mm long, its colour varies from light yellow in…
beetle General The common asparagus beetle ( Crioceris asparagi ) is a major, host-specific pest of asparagus in most asparagus producing regions of…
produce eggs to overwinter) and monoecious (i.e. they do not change their host plant for overwintering). Wingless females are green or yellow green,…
distinguish the species from most other soft scales. The size depends on the host plant and can vary from 2 to 4.5 mm. The young nymphs are white to…
and pumpkin. The hyperparasite’s mycelium penetrates the hyphal wall of a host mildew species, causing cytoplasmic degradation and death. Variable and…
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