Beetle of the longhorn beetle family, which can cause the death of the whole honeysuckle plant. Adult beetles have an elongated body, 16-18 mm long, head and chest are as wide as the elbows. The antennae are shorter than the body. They are colored yellow-orange, the head, antennae and trusses are black, two black ellipsoidal spots are on the sides of the shield. The elbows are black with fine gray hairs. There is a yellow spot at the base of the trusses. The stain is sometimes elongated to the end of the trusses.
The eggs are brownish, matt, elongated, slightly curved, 3.5-4 mm long, 0.75 mm wide. The surface of the chorion has a specific structure, bumps and grooves arranged in spirals that allow the capture of symbiotic fungi. They serve hatched larvae as a source of food.
The larvae are, as with all longhorn beetles, elongated legless, reaching about 2 cm in length, the head is long, narrow, running almost the entire shield. There is a large cavity on the underside of the head allowing deep head tilt. The butt is composed of 7 cells, it is equipped with bumps, which the larvae when moving on the walls of the hallway.
The pupae are loose, yellowish, little sclerotized, on shields with thorny bumps, hidden in a solid cloak chamber directly in the host plant.
The first adults hatch at the end of May, in highest numbers at the beginning of June, they are active until July. They leave the wood with a typical round trip hole. Males hatch about three days earlier. In sunny weather they fly around host bushes, most often between 10-12 hours. They hide under the leaves in bad weather and at dusk. A sexual nutrient is required for sexual maturity. On the underside of the leaves they eat the main vein towards the petiole. Feed often turns to strong side veins. When eaten, they often bite the petiole close to the blade so that the leaf falls off. Adults live about 20 days, females several days longer than males.
They dome 1 - 2 days after hatching, the male is firmly attached to the female’s back with the feet. Females are fertilized several times by different males. Eggs are laid 4 - 6 hours after copulation, in hatches of 6 - 8 eggs, a total of 42 - 56 eggs. They increasingly consume food during the period between laying. They lay eggs in the trunks and sprigs of healthy honeysuckles. Before laying, the wells dig into the bark to the bast, deepen the well into the wood with a false hammer, and push the egg between the bast and wood, 3 - 6 mm away from the well.
The larvae hatch in 12-14 days. When hatched, they are about 2 mm long, reaching 2 cm in length. Fine sawdust is poured from the holes created by the female during laying. The larvae initially eat the bast, creating an irregular cavity just below the bark. They wade through the wood into the pulp and eat up the corridors. Larvae in twigs thinner than 1.5 cm progress downwards. Corridors are 8 - 15 cm long, in the thicker branches are shorter. Up to four larvae can develop in one branch. Attacking is manifested by the fall of leaves. At the end of development, the larvae form chambers just below the cortex. The larvae hibernate; at the end of April, depending on the temperature. The whole development takes 2 - 3 years.
The host plants of the honeysuckle are various species of honeysuckle (Lonicera sp.). It inhabits the environment from lowlands to foothill areas, depending on the occurrence of host trees. It is more or less widespread in much of Europe except the British Isles, Denmark and Scandinavia. In some years it is more abundant especially on the honeysuckle cultivated crops grown as ornamental trees in parks, as hedges, along roads or as fruit trees. Significant antagonists are predatory imagery and larvae of cyanobacteria, predatory robbers. Under the bark, predatory larvae of common snakes are commonly found. In the larvae, parasitic parasites or lumens.
Importance and possibilities of regulation
Honeysuckle valerian attacks both weakened and healthy trees. It can multiply to a high frequency. Infested branches and trunks of honeysuckles can break, shrubs are subsequently attacked by wood decaying fungi and whole plants can die.
Protecting honeysuckle against honeysuckle val is as difficult as against all wood decaying pests. From late May to early July, imagery can be captured with cellars early in the morning or before sunset, or with an entomological net between 10-12 and 15-17. When sawdust is detected (in July), cut and burn the infected branches. Registered insecticides with a profound or systemic effect can be applied to the infected strains. In 2019 insecticides with the active substance alpha-cypermethrin and deltamethrin are registered against wood-destroying beetles.