Woolly Catkin Gall Wasp 
Woolly Oak Gall 
Woolly Sweat Bee 
Xanthopimpla punctata 
Xanthopimpla stemmator 
Xylocopa auripennis 
Xylocopa dejeanii 
Xylocopa insularis 
Xylocopa iris 
Xylocopa myops 
Xylocopa valga 
Xyloperga univittata 
Yelicones nigromarginatus 
Yellow and Black Potter Wasp 
Yellow Crazy Ant 
Yellow meadow ant 
Yellow oriental paper wasp 
Yellow sand wasp 
Yellow-banded Polybia Wasp 
Yellow-faced Bumble Bee 
Yellow-footed Ant 
Yellow-fronted Bumble Bee 
Yellow-legged mining bee 
Yellow-sided Clover-Sawfly