• Japanese beetle

  to rapidly build up and spread steadily in the US. In Europe, Popillia japonica was for the first time reported in northern Italy in 2014 where official [...] are most abundant in well-kept lawns and golf courses, and less often in pastures. The grub feeds just below the surface, it cuts off and consumes the grass [...] yellowing, and wilting, culminating in large patches of dead, brown grass that appears in late summer or early autumn. Secondary damage from mammals and birds

• Fall Armyworm

  damage in appearance). Life cycle of the Fall Armyworm Adult moths are 20 to 25 mm long and have a wingspan of 32-38 mm. They are nocturnal and most active [...] lay their eggs in clusters of 150-200 and can lay up to 2000 eggs in a lifetime. Eggs are white, pinkish or light green and spherical, and are usually laid [...] on the front of the head and four large spots on the upper surface of the last segment. Pupae are reddish brown and measure 13 to 17 mm in length. The eggs

• Cabbage moth

  skeletonized leaves, holes and frass on leaves. The caterpillars destroy large numbers of leaves and their frass accumulates in the heart of cabbage, thereby lowering [...] lowering the commercial value of infested crops. Life cycle and appearance of Cabbage moth The adult cabbage moth (Mamestra brassicae) has grey-brown to [...] are ridged and have a light network of markings. First instar larvae of the cabbage moth (Mamestra brassicae) are gregarious, eating the edge of the leaves

• Two-spotted spider mite

  The webbing and spotting on the leaves affects the appearance of the crop. This is of particular concern in ornamental crops. Life cycle of two-spotted [...] yellow, and as more cell sap is removed, the leaf, and eventually the whole plant, may die. In tomatoes and cucumbers, as little as 30% damage of the leaf [...] the underside of leaves where they pierce the cells and suck out the contents. The empty dead cells become yellow, and in many plants the damage can also

• Stable fly

  insects and can travel up to 20 km in search of new hosts. Damage symptoms Stable flies typically congregate on the legs of livestock to feed, and the population [...] equine infectious anemia (EIA) and hog cholera, and the protozoan trypanosomes that cause surra. Life cycle and appearance of the Stable fly Adult stable [...] (singly, or in bunches of 25–30) in humid areas with large amounts of decaying organic matter, such as compost piles, hay bales, spilled feed and near the

• Shore fly

  damage, and sometimes this can occur on such a scale that growth, particularly of young cuttings, can be retarded. Life cycle and appearance of Shore fly [...] found in the top layer of damp soil, where they also pupate. The adult shore fly is black, about 4 to 5 mm long, and stout with short antennae and short [...] very commonly, often in the vicinity of water. They feed on algae. Other shore fly species have diverse feeding habits but the larvae of most species feed

• Cannabis aphid

  flowers and stems to overwinter and produce the next generation of aphids in the spring. In greenhouses, sexual reproduction is very rare and only triggered [...] from Colorado in 2016 and is now widespread throughout that state and Oregon. Its range also includes several other states and parts of Canada. The cannabis [...] virus, cucumber mosaic virus, hemp mottle virus and alfalfa mosaic virus. Life cycle and appearance of the Cannabis aphid Adult cannabis aphids are between

• Chafers

  smaller; about 13-15 mm long and reddish-brown in colour. The adult beetles fly in the evening, generally in June and July and land on trees to mate. During [...] General The chafers are beetles of the Scarabaeidae family. The larvae of both species live in the soil and feed on the roots of many plants. They are a serious [...] the roots can lead to yellowing and wilting of plants. Damage can be severe on young plants and especially in grassland and turf. There, secondary damage

• Cutworms

  the growing stalk, disrupting the sap flow in the plant. Life cycle and appearance of Cutworms The adults of Agrotis spp. have pale grey to grey-brown forewings [...] feeding on tender leaves of seedlings. Third to seventh instars become negatively phototaxic and feed mostly at night and hide in the ground during the day [...] plant and quickly moves on to other plants and continues cutting. Therefore, relatively small populations of cutworms can destroy entire stands of crops

• Rice root aphid

  mould and fungus. Transmission of viral disease between plants. Life cycle and appearance of the Rice root aphid Like most aphids , the rice root aphid appears [...] appears in both winged and wingless forms. The wingless form is dark olive-green, with a round body 1.4–2.4 mm long. It lives and feeds on the roots of the [...] le) is a well-known pest in North America that survives outdoors all year round. It can affect plants grown in both soil and hydroponic systems. Unlike