Woolly apple aphid

females of the woolly aphid are 1.2-2.6 mm long, purplish brown and covered by masses of white, mealy wax. The siphunculi are pore-like and the cauda is [...] cracks and under loose bark. The nymphs become active in late March or April (in the northern hemisphere) and around the end of May, large colonies covered [...] occur during the summer months, also on new growth. Water shoots arising from the trunk or main branches, are very frequently attacked. The aphids mainly

Mottled arum aphid

sexual stage in the life cycle. Wingless females of the mottled arum aphid are shiny whitish, yellowish or green with black cross bands behind the head, broken [...] broken along the midline, and a large horseshoe-shaped spot on the back of the abdomen. These black markings can be highly variable. Adult females are 1.2-2 [...] greatly reduce plant vigour and kill the plant through sucking of plant sap. However, also at lower densities the aphids can damage plants because they

Large raspberry aphid

to reduce yield by direct feeding damage. The major problem is the spreading of various raspberry viruses by the aphids. Life cycle and appearance of Large [...] antennae, legs and siphunculi. The cauda is short and triangular. Overwintering eggs of the large raspberry aphid are laid near the base of vegetative canes [...] in spring, the aphids mainly feed on the underside of leaves and start to reproduce parthenogenetically. They are very mobile and drop from the plant when

Pear psylla

generation nymphs turn brown and die. Feeding later in the season may affect the harvest of the next year by weakening or killing fruit buds. Pear psyllas [...] They have white, longitudinal stripes on the back of the thorax. Their forewings are clear with dark veins. The eggs are oval, approximately 0.3 mm long [...] stripes and blackish markings on the head and body. Pear psyllas overwinter as adults, sheltering on the bark of pear trees. The adults become active in spring

Circular scale

under the scale. Eggs hatch under the scale and the crawlers walk about to find a suitable feeding site before settling to a sessile lifestyle. The second-instar [...] point which is sometimes pale. When the scale is lifted, the insect beneath is yellow and up to 1.7 mm long. The adult male is 0.7 mm long and has a single [...] General The circular scale, Chrysomphalus aonidum is a tropical species, native to the Oriental region but it has been dispersed widely in tropical and

Yellow rose aphid

Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to [...] quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky. Black sooty moulds [...] ng fruit and ornamental crops. At the same time, photosynthesis in the leaves is reduced, affecting production. The yellow rose aphid is also a vector

Large blackberry aphid

siphunculi. The cauda is short and triangular. The aphids overwinter as eggs on blackberry plants. After emerging in spring, the aphids mainly feed on the underside [...] host specific the host plant is the simplest method to distinguish these two species. The large blackberry aphid is widely distributed in Europe and also [...] General The large blackberry aphid, Amphorophora rubi , is very similar to the large raspberry aphid Amphorophora idaei . As both aphid species are host

Shore fly

Shore fly The life cycle of the shore fly ( Scatella tenuicosta ) has the following stages: egg, three larval instars, a pupa and the adult fly. The eggs are [...] translucent and their body is cylindrical. The larvae are found in the top layer of damp soil, where they also pupate. The adult shore fly is black, about 4 to [...] and stout with short antennae and short legs. The head of the adult has a pair of conspicuous eyes. The wings have grey-brown patches. Although shore flies

Capyphor

) Mode of action The nematodes enter the pest and release symbiotic bacteria into the pest's body cavity. These bacteria convert the host tissue into a [...] carrier. Preparation Remove the sachets from the box and keep them at room temperature for 30 minutes Empty the contents of the sachets into a bucket containing [...] 15-20°C/59-68°F) Stir well and leave the contents to soak for five minutes Stir again and pour the contents of the bucket into the half-filled spray tank (except

Casea

) Mode of action The nematodes enter the pest and release symbiotic bacteria into the pest's body cavity. These bacteria convert the host tissue into a [...] sheet Preparation Remove the sachets from the box and keep them at room temperature for 30 minutes Empty the contents of the sachets into a bucket containing [...] 15-20°C/59-68°F) Stir well and leave the contents to soak for five minutes Stir again and pour the contents of the bucket into the half-filled spray tank (except