ClimateWatch

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  1. 6 Photo by Michael Halliday

European Wasp

Vespula germanica

Appearance

  • Colour: bright yellow and black bands across its abdomen, with a pair of black spots and a black triangle on each yellow band. It has yellow legs, black antennae and two pairs of transparent wings.
  • Size: 1.2 – 1.5 cm long (worker); 2 cm long (queen). 
  • NestsNests are commonly built underground with only their small entrance holes visible, which are about 2 - 3 cm across.

Behaviour

  • Diet: meat products, including fish, and sweet foods. It travels up to 500 metres from its nest to search for food. Grubs in the nest are fed insects, spiders and pieces of meat.
  • Flight: very fast, holding its legs close to its body. It doesn’t usually hover.
  • Breeding: mating occurs in autumn, after which the males die. The mated females (queens) disperse to hibernate over the winter, although one queen may remain in the original nest. In spring, the queens emerge and search for a nest site. They construct a nest from papery material scraped from wood and mixed with saliva. The queen makes about a dozen cells inside the nest, and lays an egg in each cell. The eggs hatch into larvae, which are fed by the queen until they pupate and become worker wasps in late spring or early summer. The workers enlarge the nest (often to the size of a football) and gather food, while the queen continues to lay eggs. The number of wasps in the nest peaks in early autumn, often with up to 2,000 workers! Male wasps (drones) are produced, followed by new queens in late autumn when the original queen dies. The new queens and drones then mate outside the nest.

What to Observe

  • Presence (to establish the first and last sighting for the season)
  • Courting/mating

ClimateWatch Science Advisor

Due to the mild winter in some parts of Australia, wasp nests survive over winter which in some cases can contain tens of thousands of workers. This is not the situation in their countries of origin where the winters are severe and cold, and helps to explain why wasps have become such a dangerous pest here. More nests may start surviving over the winter, as a result of climate change warming the earth.

When To Look

  • From spring through to autumn.
  • Nests are built in spring.
  • Worker wasps can be seen from late spring through to autumn.
  • Mating occurs in autumn.

Where To Look

  • In the cooler and wetter climates of coastal southern Australia, including Tasmania, Victoria, the Australian Capital Territory, south-eastern New South Wales, and the wetter parts of South Australia. There have also been a few sightings in south-east Queensland and south-west Western Australia.
  • Nests are found underground and in cavities in walls, ceilings, logs and trees.
  • Wasps are attracted to sweet food and meat, so can often be seen at outdoor eating venues and barbeques.

European Wasp Occurrence Map ALA

References

AGFACTS Information Leaflet AE31 1994. European and Papernest Wasps. NSW Department of Agriculture.

CSIRO 1991. The Insects of Australia. CSIRO Publishing.

  1. Search Species

  1. What Else?

    • English Wasp: a close relative of the European wasp, it has very similar colour markings but is restricted to the eastern parts of Melbourne and the Gippsland region. The vertical yellow band behind its eye is broken by a black spot (it is unbroken in the European wasp) and its face usually has a black anchor-like mark. Also, the black marking on each yellow band on its abdomen tapers to a point, while it is a triangle shape on the European wasp.
    • Paper wasp: has a longer, thinner body, orange-brown antennae, back legs that hang down during flight, and is often seen hovering. Its nest is smaller, usually above ground and looks like honeycomb cells without an outer covering.
      Other wasp: most don’t have the vivid yellow and black markings.
      Bee: has black legs, dull yellow bands on its abdomen with no black dots.
  1. Did You Know?

    The European Wasp is native to Europe, North Africa and parts of Asia. It was first found in Australia in Tasmania in 1959 and on the mainland near Melbourne in 1977.

    It is more aggressive than a bee and will attack when its nest is disturbed. It doesn’t die after stinging and can sting more then once.