<a href="https://en.wikipedia.org/wiki/European_hornet" class="extiw" title="en:European hornet">Vespa crabro</a>, commonly known simply as the "hornet", is the largest European <a href="https://en.wikipedia.org/wiki/Eusociality" class="extiw" title="en:Eusociality">eusocial wasp</a>. The specimen in the picture is a fully grown worker (female) – measuring 25 <a href="https://en.wikipedia.org/wiki/Millimetre" class="extiw" title="en:Millimetre">mm</a> (about one <a href="https://en.wikipedia.org/wiki/Inch" class="extiw" title="en:Inch">inch</a>) from head to <a href="https://en.wikipedia.org/wiki/Abdomen" class="extiw" title="en:Abdomen">abdomen.</a> Another detail in the picture is one of the three <a href="https://en.wikipedia.org/wiki/Ocellus" class="extiw" title="en:Ocellus">ocelli</a> between the two <a href="https://en.wikipedia.org/wiki/Eye#Compound_eyes" class="extiw" title="en:Eye">compound eyes.</a>
<a href="//commons.wikimedia.org/wiki/User:Wilder_Kaiser" class="mw-redirect" title="User:Wilder Kaiser">Bernie</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>