The wood wasp (Dolichovespula sylvestris) is part of the group of social wasps or paper wasps. It is common in all temperate regions of the northern hemisphere.
The body is divided into three parts: *
head adorned with a pair of antennae, two compound eyes and ocelli and mandibles, thorax *
into three segments with three pairs of legs and four membranous wings, abdomen
* very mobile with a converted ovipositor ovipositor.
clear Hairy chest and 2 yellow spots.
Queen: 15-19 mm
Male: 14-16 mm
Workers: 13-15 mm
Breeding females hibernate in the fall while the other group members die. In spring, the survivors found new colonies. To feed the larvae are carnivorous, adults captured large quantities of caterpillars and insects that destroy crops or attacking livestock, thereby eliminating many unwanted pests. At flowering, the wasp pollination is involved in collecting the nectar.
The species builds nests on the size of lemons, formed by 3 or 4 horizontal beams connected by a stalk. These are carefully protected by an envelope of paper mache, made from plant fibers bonded with saliva. The bottleneck station is located on the bottom.
little nest air ball in the trees "cardboard" grayish (chewed wood).
The insect wasp is a "genuine", adult feeding on the nectar of certain flowers or the sweet flesh of ripe fruit.
Source: http://domenicus.malleotus.free.fr
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