• Lyprauta

  which are small earthworms of the family Enchytraeidae. Damage symptoms The symptoms are superficial damage on roots. Especially the root tips are affected [...] spot on their wings. The eggs of Lyprauta sp. are greyish-black and spherical. Larvae of Lyprauta sp. are a transparent greyish white and have a long slender [...] body. The head is brown or reddish. The pupae are white to yellow and embedded in a dense web. Adult flies are long and slender and have a dark brown head

• Chafers

  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 [...] lay their eggs. Eggs are shiny and white. The eggs hatch after about four weeks and the larvae start to feed on roots. The larvae are white-coloured, C-shaped [...] serious pest that can cause substantial damage. The adults are not harmful. Damage symptoms Larval feeding on the roots can lead to yellowing and wilting of plants

• Tomato russet mite

  russet mite All life stages of the tomato russet mite are extremely small and difficult to observe. They are elongated (torpedo-shaped), soft and segmented. [...] of legs, whereas other mite groups have four pairs. Eggs are roughly 0.05 mm in diameter and are laid on the underside of leaves, on leaf petioles, and on [...] When newly laid they are creamy white but turn to a patchy yellow as they age. The mites have two nymphal stages: sometimes they are also called larva (1st

• Cabbage leafroller

  caterpillars are much lighter and have dark lateral stripes. The caterpillars are relatively thin and measure up to 25 mm in length. They are slightly hairy [...] forming a “V” when at rest. At rest, the wings are held folded almost horizontally over the body. The antennae are thin and of medium length. The moths fly when [...] lateral stripes that are sometimes light in colour. The ventral surface is lighter than the dorsal, with hairs located in warty spots that are lighter than the

• Lesser Mealworm

  waste and are eaten by the chickens in turn, posing a risk for disease transmission, especially Salmonella . These insects reproduce quickly and are difficult [...] five to ten days. Lesser mealworm adults are shiny, ­black beetles with a slightly-flattened oval shape. They are about 6 mm (0.25 inches) long and they [...] It has long been known as a common pest worldwide, and while its origins are unclear, it was likely carried out of Sub-Saharan Africa and dispersed via

• May beetle

  larvae are relatively harmless, the older larvae are the most aggressive. In early spring they either start feeding again or when the larvae are fully grown [...] Overview May beetles are beetles from the Scarabaeidae family, and are plant-eating species from the Melolonthinae subfamily. Although this subfamily contains [...] of this genus, they are usually treated as a single group, sharing similar habits and biology. The larval stages of these beetles are harmful to crops, since

• Diamond back moth

  the diamond back moth (Plutella xylostella) are initially yellow or pale green and later darken. They are deposited singly or in small groups of two or [...] in the leaf tissue, the larvae are voracious surface feeders. The pupae of the diamond back moth (Plutella xylostella) are covered with a white, loose, silken [...] edge. In females, the upper two-thirds of the forewings are light ochreous and the markings are like those of the males. The back is marked with a broad

• Citrus mealybug

  females of Planococcus citri are 2.5 - 4 mm long and 2 - 3 mm in breadth. Seen dorsally, they have an oval form; they are soft and covered with a fine [...] longitudinal stripe running over the body. The adult males are short lived and can be hard to spot. They are smaller than the females, have two pairs of wings and [...] threads. Once the eggs are laid, the female shrivels up and dies. The first instar nymph develops from the egg. These first instar nymphs are known as ‘crawlers’

• Broad mite

  and cyclamen are also affected. Outside in temperate climates, broad mites (Polyphagotarsonemus latus) are not a serious problem, as they are unable to [...] elongated, oval eggs are firmly attached to the surface and are rather large (about 0.07 mm) compared with the subsequent, active stages. They are transparent and [...] cells are killed, deformed corky patches frequently appear causing misshapen fruits that often crack open at the site of deformation. Flowers are often

• Cannabis aphid

  cannabis aphids are between 1.8–2.7 mm long. They are normally wingless but a winged form appears in late summer. Early in the season, the aphids are nearly colourless [...] , and affected plants are damaged by the loss of this vital fluid. The following damage symptoms may be observed when plants are infested with Phorodon [...] these are two short knobs (antennal tubercles). Their cornicles (the pair of small, upright, backward-pointing tubes on the aphid's rear end) are white