Description of mature larvae of Allodynerus rossii (Lepeletier), Ancistrocerus auctus (Fabricius), Euodynerus dantici (Rossi) and Symmorphus murarius (Linnaeus) (Hymenoptera, Vespidae)

The mature larvae of four species of Eumeninae, Allodynerus rossii (Lepeletier), Ancistrocerus auctus (Fabricius), Euodynerus dantici (Rossi) and Symmorphus murarius (Linnaeus), are described. The mature larvae of A. rossii is characterized by the number, morphology and distribution of sensilla of the labrum and epipharynx. The last instar larva of A. auctus is characterized by having an epipharynx with 14 sensilla. The most apparent differences between the mature larvae of Euodynerus lie in the number of sensilla of maxillary and labial palpi and antennae. E. dantici is characterized by presenting the antennae with four apical sensilla and maxillar and labial palpi with five sensilla on apex. S. murarius is characterized by having the opening into subatrium armed with spines and maxillary palpi with two sensilla at apex. The larval morphology of Allodynerus is described for first time.