Gomphidae
 The Gomphidae are a family in the Odonata commonly referred to as clubtail dragonflies; it contains about 90 genera and 900 species. The name refers to the club-like widening of the end of the abdomen (abdominal segments 7 through 9). However this club is usually less pronounced in females and is entirely absent in some species. Clubtails have widely separated eyes a trait they share with the Petaluridae and with damselflies.