Xestoleptura octonotata 
Xoanodera trigona 
Xylotrechus stebbingi 
Xylotroupes 
Xylotrupes australicus 
Xylotrupes pauliani 
Xystrocera festiva 
Xystus sanguinicollis 
Yakuhananomia bidentata 
Yellow Ladybird Beetle 
Yellow Starthistle Flower Weevil 
Yellow-horned Flower Longhorn Beetle 
Yellow-shouldered ladybird 
Zacladus geranii 
Zeacalles pictus 
Zebra Beetle 
Zebra longhorn 
Zenodosus sanguineus 
Zigzag Ladybird 
Zographus regalis 
Zonitis bilineata 
Zonitis flava 
Zygogramma signatipennis