Figure 1.

Representative species of Hymenoptera. The pictured hymenopteran species clockwise from top left are the German wasp (Vespula germanica), red bull ant (Myrmecia gulosa), Argid sawfly (Arge humeralis) and European honey bee (Apis mellifera) (images courtesy of Richard Bartz, user Quartl, Bruce Marlin and Jon Sullivan, respectively; all were obtained from Wikimedia Commons under the Creative Commons Attribution/Share-Alike License except the honey bee, which has been released into the public domain).

Bininda-Emonds BMC Biology 2011 9:59   doi:10.1186/1741-7007-9-59
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