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02 February 2024 - News
The pine processionary (Thaumetopoea pityocampa) is an insect of the order Lepidoptera (family Thaumetopoeidae) characterized by a holometabolous development cycle. This means the processionary undergoes a series of larval stages very different from the adult, followed by a dormant stage (pupa), after which the adult form emerges through complete metamorphosis.
This moth primarily targets native pines in our country (P. nigra, P. sylvestris, P. halepensis, P. pinea, etc.), but it can also affect other conifers (Cedars, Red Firs, and Douglas Firs), especially if isolated. The larvae of the processionary can cause noticeable defoliation, which weakens the plants and makes them more susceptible to attacks from fungi and other pests. However, the most severe damage is caused to humans and warm-blooded animals due to the presence of stinging hairs on the larvae’s body.
To prevent the proliferation of the species and reduce the development of pine processionary populations, different methodologies and techniques can be applied at various times of the year.
At the end of summer and early autumn, liquid treatments with bio-insecticides can be carried out to target young larvae. Belthirul, a wettable powder-based plant protection product, contains selected strains of the sporulating bacterium Bacillus thuringiensis var. kurstaki, which is harmless to humans and highly effective for controlling defoliating phytophagous pests.
Colkim has introduced an eco-friendly trap to the market, the Procesan®. This is a collar trap that fits perfectly around the trunk of a pine tree, thanks to its adjustable band, which can be extended up to 400 cm in the XL version.
The trap captures the pine processionary larvae descending from the tree through a specialized container. Integrated into the trap structure, this container must be emptied periodically. Procesan® is weather-resistant and reusable for multiple years.
