Cotton leafworm

excrement protrudes from the holes they have produced. On tobacco, the stem base is often destroyed. On maize, the cotton leafworm ( Spodoptera littoralis [...] whitish yellow. They are laid in clusters of 20 to 500 pieces on lower leaf surfaces, often on the lower parts of the plant. The female covers the eggs with [...] with a median dorsal line bordered on either side by two yellowish-red or greyish stripes and small yellow dots on each segment. The underside of the

Broad mite

There are species that feed on fungi, algae, plants, as well as insect and mite predators and parasites. Those living on plants can cause considerable [...] mites ( Polyphagotarsonemus latus ) lay their eggs mainly on the underside of the leaf or on the fruit surface. The elongated, oval eggs are firmly attached [...] pale yellow or yellow-green, depending on the type and quantity of food consumed. Female mites have a white stripe on their backs.

Cannabis aphid

sap is excreted on leaves and flowers as a sticky “honeydew” which promotes the growth of black fungal moulds. White skin moults visible on the leaves. Live [...] aphid or hemp aphid) is a very new pest to North America. It was first seen on cuttings originating from Colorado in 2016 and is now widespread throughout [...] production; there have been unconfirmed reports of Phorodon humuli developing on cannabis plants, as well. Damage symptoms The cannabis aphid is a sap sucker

Sciarid flies

feeding on the roots. The larvae feed mainly on decaying plant material and on algae and fungi present in the soil. They, however, can also feed on root hairs [...] Damage symptoms The larvae of sciarid flies feed mainly on organic remains and the fungi that grow on them, although some species can also eat living plant [...] rootlets, and tender root, stem and leaf tissue. Later instars may even feed on plant stems. The injuries caused by feeding also provide invasion routes for

Tomato looper

other large veins. On tomatoes, the tomato looper ( Chrysodeixis chalcites ) can completely defoliate young plants. Infestations on ornamental plants reduce [...] usually attached to the underside of leaves within folded edges, on random objects and on tomato fruit, often in a bunch of ripening tomatoes, however, it [...] Mediterranean and northern Africa. The larva is highly polyphagous and feeds on plants of over 20 families, among them crops such as cauliflower, corn, crucifer

Cabbage looper

caterpillars feed mainly on the leaves causing irregular holes. The first three instars make small holes, while the following stages feed on the tissue between [...] green to pale green with a white band on both sides of the body. Pupation takes place in webbed cocoons often on the underside of the host plants. The [...] cycle and appearance of Trichoplusia ni Adults can deposit up to 300 eggs on the underside margins of the upper leaves of plants. The eggs have a spherical

Spider mites and other mites

detect them. Plant mites are often found in colonies on the undersides of leaves, where they feed on the plant's sap. The damage caused by plant mites can [...] a range of damage, depending on the species and the host plant. They often cause yellow-brown spots and discoloration on the leaves. Some species induce [...] female mite laying eggs. The eggs are usually spherical and laid on the underside of leaves or on other parts of the plant. The number of eggs laid by a single

Thrips

often found on the undersides of leaves, where they feed on plant sap. Damage: Thrips can cause damage to leaves, flowers, and fruits by feeding on plant tissue [...] adults feed on all aerial parts of the plant and are fairly mobile. Immediately after hatching, the larvae begin to feed on plant tissue on the underside [...] variety of colors, depending on the species. Most of them are brown or black. Some species may have distinctive markings or stripes on their bodies or wings.

Aphids

markings or stripes on their bodies. Movement: Aphids are slow-moving and tend to cluster on the undersides of leaves, where they feed on plant sap. They may [...] called tubercles on their rear end. Color: Aphids can be a variety of colors, including green, yellow, black, brown, pink, or red, depending on the species [...] leaves: Aphids feed on the sap of plants, which can cause the leaves to turn yellow or become distorted. The damage is often more pronounced on the younger leaves

Beetles

species feed on growing tips and roots or chew and bore into stems, but in other species also feed on leaves. Adult beetles cause damage by feeding on fruits [...] order Coleoptera, a well-known group of insects that are easily recognizable on account of their hard wing covers (elytra). With more than 350,000 known species [...] before reaching the adult stage. Larvae have biting mouthparts and mostly feed on the same food as the adults. The pupae do not make a cocoon and will already