Measurements taken. We estimated the size of a rhyssine wasp by measuring the length of the mesosoma (A). We estimated the slenderness of the metasoma by measuring the length (B) and width (C) of tergite 3. The forewing (D) of some wasps was also measured. Note that the left forewing is blurred in this image; these measurement images were taken mainly for the purpose of future reference, so details are not always as clear as during the measurement itself.