ropean hornets (Vespa crabro) and wasps such as the common wasp (Vespula vulgaris) or the German wasp (Vespula germanica) can often be observed at feeding sites such as fruit trees or sugary foods.

The German wasp (Vespula germanica) and the common yellowjacket wasp (Vespula vulgaris) were the most common species (both representing 44%). The European hornet (Vespa crabro) made up 6% ...

A high school teacher trying to solve the mystery of why queen Vespula wasps mate with many different males thinks the practice might have evolved to stave off a catastrophic colony collapse.