Greenhouse thrips – Heliothrips haemorrhoidalis

Heliothrips haemorrhoidalis

Heliothrips haemorrhoidalis

Distribution:

This species has originated from tropical America, then it spread across the entire globe. In Europe, it is found only in greenhouse conditions.

Description

The adult body is blackish-brown colored, 1.2-1.5 mm long. The larva is yellowish-brown, 1 mm long.

Heliothrips haemorrhoidalis -adult

Biology and ecology:

The pest develops in natural conditions only in very warm regions and it overwinters as an egg. With the help of the egghead, the female lays eggs in the foliar limb. After an incubation period of 5-6 days, the larvae appear, which feed through leaf epiderma pricking.

Heliothrips haemorrhoidalis - larvae

Attacked plants:

The greenhouse thrips grows in field conditions in very warm areas on citrix, avocado, mango, coffee tree, vine, apple tree, pear tree, tee cultures, spinach, geranium etc. In greenhouse conditions, it causes damage to a large number of plants: azalea, ficus, rose, carnation, chrysanthemum etc.

Heliothrips haemorrhoidalis - affected plant

It attacks the leaves, sprouts and flowers, causing white spots. The attack on flowers leads to their deformation. In case of strong attacks, the total or partial necrosis of the organs takes place, the attacked plants remain small and fruition is reduced.

Heliothrips haemorrhoidalis - affected leaf

Prevention and control

In case of strong attacks, usage of chemical control products is recommended, using insecticides such as Mospilan 20 SG (0.06%), Actara (0.02%), Confidor Energy (0.08%), Fastac 10 EC (0.02%), etc.

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