Common Name: Common wasp Scientific Name: Vespula vulgaris
Introduction: The Common wasp or German wasp is commonly found throughout Britain
and Europe. They become a nuisance during mid summer and are also known for their
aggression and painful sting. Common wasps are yellow and black in colour and in
urban areas mostly found in the roof spaces or loft, shed etc.
Recognition: It is very easy to find out if there is a wasp nest in your local building
or structure, because wasps can be seen going in and out into the building or structure
during the day or the nest can be spotted by the occupants using the building. Sometimes
the wasp can be confused with bees due to wrong identification. Bees are normally
shorter in body length (about 15mm) and very chubby in size whereas the wasps are
slimmer and longer in body length (about 20mm).
Biology:Egg>lava>pupa>adult. During winter fertilised queens goes into hibernation
and will emerge in mid April in search of a suitable site to start her colony. The
fertilised queen will chew dry timber and plant fibre, mix it with saliva to form
her first cell with 10-30 individual chambers. Inside this cell she will lay her
first set of eggs averaging 10-30 eggs. These eggs will hatch into white legless
grubs where the queen will feed them with insect and other invertebrate. The fully
grown larvae takes within four weeks to reach the pupa stage and another two weeks
from pupa to adult. These first set of workers or sterile females will take up their
places in expanding the nest and searching for food to feed the new set of larvae,
while the queen continues to lay her eggs. By late summer a German wasp nest can
contain about 3000 individuals with a nest sized of 30cm wide. During the latter
part of the summer the males and young queens will emerge when mating begins. The
fertilised females will fly away in search of their individual site for their new
colony while the remaining workers become sluggish. They feed on ripe and over ripen
fruits which cause a tipsy behaviour leading to aggression when interfered with.
During the cold winter weather all the workers and males are killed off, with only
fertilised queens surviving through hibernating and will start their new colonies
Habits: common wasps form their nest in soil banks, roof space or lofts, cavities
and trees. Their nests are made out of paper (chewed wood and plant fibre). Colonies
can only survive one season in Britain with a new one starting each spring.
Potentials harm: Common wasp are known for their painful or unpleasant sting. Multiples
sting in sensitive places such as the head or inside the mouth can be serious. In
some cases individuals whom are allergic to wasp stings can result in anaphylactic
shock (an extreme reaction to toxins in the wasp venom)
Professional Control: wasps can be treated using various insecticide formulations,
such as residual insecticide, aerosol spray and insecticide dust (only approved insecticide
WTC Pest Control WTC Pest Control works in the Leek, Cheadle Stoke on Trent, Biddulph, Stafford, Sandbach, Stone, Eccleshall, Newcastle Under Lyme, Uttoxeter, Macclesfield, Congleton areas.