Pests
Index of the most common pests in ornamental species in parks and gardens and which can be treated with Endoterapia Vegetal.
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Elm Beetle
Scientific name: Xanthogaleruca luteola
Affected plant: mainly species of the genre Ulmus
The Galeruca is a monophagous coleopteran which feeds on leaves, both in its cocoon state as when it is adult. The damage done from one or the other can be made out, as adults make holes in the leaves, while cocoons eat the green parenchyma with great voracity and respecting the epidermis of the bundle, that is to say, they do not perforate the leaf, but it is left with a semi-transparent colour.
Due to this reason, in mid summer, trees remain defoliated or decrease their leaves in a high percentage, diminishing thus the vigour due to the reduction of its photosynthetic capacity.
If defoliations are repeated year after year, the tree becomes very weak so it remains in favourable conditions for perforating insects (Scolytus sp.) to invade it.
These beetles transmit a very deadly fungus (Ceratocystis ulmi) for the elms; this disease is known as the elm Ded.
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