LEPISAN® Insects- Lepidopterae
LEPISAN® and DELTASAN ® are both traps indicated for the capture of the following lepidopterae insects:
“Rosquilla” caterpillar is an insect belonging to the Spodoptera gender which causes damage in orchard crops in the larva stage by carving galleries in the leaves which weaken the plants. Occasionally they also bite fruits and their excrements favor the growth of fungi which cause rotting. In the past years they have become an important plague due to the lack of effectiveness of chemical applications against these insects.
The green caterpillar Spodoptera Exiqua is a migrating insect that mainly affects peppers, tomatoes, melons and water melons. In its development it goes through the stages of egg, larva and cocoon before reaching the adult stage.
The damaging larvae are green with long lines in a lighter color and 2 black spots on either side of the front part of the body. They are voracious and eat all the green organs of the plant. Larvae in the early phases eat the parenchyma on the underside of the leaf but not the front side, while older larvae eat the entire leaf and also the fruit which they cause to fall to the ground. When larvae finish their development, they move towards the ground where they cocoon.
The adult is a grayish moth which appears in Spring. Females lay the eggs in groups, in masses of about 300 eggs on the underside of the leaves and they protect them with scales from their abdomen.
Lately they have become very relevant in warm areas since they remain active the entire year ( they produce 3 generations).
Spodoptera litoralis or black caterpillar is one of the most destructive insects for agriculture in tropical and sub-tropical regions. It can attack numerous crops over a year. In cotton this pest causes considerable damage by eating the leaves, flower buds and pods. In Europe there were practically no damages by Spodoptera until 1937. In 1939 there was a population explosion in Southeast Spain, affecting mainly alfalfa and potatoes. At present, this insect has great economic importance in Cyprus, Israel, Malta, Morocco and Spain ( but not in the north, for instance Cataluña). In Italy it also has an important impact on vegetable and ornamental crops.
Lobesia botrana or grape bunch moth is one of the pests which most affect vineyards in Spain. It comes in three generations, the first feeds on the flowers and its damage is not too important, the other two generations are more harmful since they feed on the fruit causing it to rot by contaminating it with fungi and bacteria.
Chilo supressalis or rice screwworm is one of the most harmful plagues for rice. It is most active at sunset, its larvae drill the stems in order to feed on the internal tissues of the rice plant. This causes a serious weakening of affected plants, so that the ears are significantly less productive then in healthy plants.
This plague develops up to 3 generations in one year. Between the end of April and mid June, coinciding in time with sowing and the initial stages of development of the rice plant, the first adults of the season appear (1st flight). These come from larvae most of which have been hibernating inside the stems of pampa grass (Phragmites sp). These adults produce the first generation of larvae.
During the month of July and beginning of August we find the second flight of adults which originate 2nd generation larvae. A good number of these larvae develop in parallel with the blossoming and formation of the rice ears, and from the end of August they give way to a third flight of adults.
Helicoverpa armigera, Helyothis or tomato caterpillar is a polyfagous lepidoter that affects crops such as tomato, pepper, cotton, corn, alfalfa and soy and to a lesser extent tobacco, sorgum, leguminous plants and sun flower.
This is a migratory species. Some populations come from the north of Africa with a first high point of flights of adult males and females in April-May. They settle in Andalucia and take longer to reach further north. They reach the south of France and begin to procreate, producing a new generation until June-July.
Others are sedentary. They live in our area and spend the winter and part of Spring in cocoon shape on the ground, they emerge approximately in June-July and coincide with the descendants of the migratory species.
Later, this entire population has a next generation, this maximum comes in September-October.
Damage is severe if the crops are in bloom or with fruit in April-May, June-July, September-October.
With this type of pest, its incidence and the damage produced is influenced by the moment when the crop is planted. Larvae in the third stage or older are the most harmful in tomato crops.
Euzophera pingüis or olive tree worm is a lepidopter whose larvae (caterpillar) feed on wood so they are known as drills. They practice round galleries in branches and even the trunks of young trees.
Larvae that have spent the winter in the wood, cocoon and emerge in stages. Some of them have already evolved into butterflies and they lay their eggs in the wounds of the trunk and branches. These wounds can have been caused by pruning, hail, frost, corrugated tutors, etc., mainly where there is a retention of sap. It can be a very harmful parasite, specially in young plants.