Heather Angel / Golden flange tail dragonfly (Sinictinogomphus clavatus) male perching on Lotus stem. Puzhehei Lake, Puzhehei National Wetland Park, Yunnan Province, China.

Jan Hamrsky / Clubtail dragonfly nymph (Gomphus vulgatissimus), burrowing into the sand at bottom, Europe, June, controlled conditions

Jan Hamrsky / Clubtail dragonfly nymph (Gomphus vulgatissimus), underwater, Europe, June, controlled conditions

Jan Hamrsky / Clubtail dragonfly nymph (Gomphus vulgatissimus), underwater, Europe, June, controlled conditions

Jussi Murtosaari / Green snaketail dragonfly (Ophiogomphus cecilia), male, Finland, August.

Jussi Murtosaari / Green snaketail dragonfly (Ophiogomphus cecilia), male jaws open, Finland, August.

Andres M. Dominguez / Western clubtail dragonfly (Gomphus pulchellus), Sierra de Grazalema Natural Park, southern Spain. June.

Andres M. Dominguez / Western clubtail dragonfly (Gomphus pulchellus), Sierra de Grazalema Natural Park, southern Spain. June.

John Abbott / Flag-tailed spinyleg dragonfly (Dromogomphus spoliatus) female, Texas, USA, June.

John Abbott / Cobra clubtail dragonfly (Gomphus vastus) male, Texas, USA, July.

John Abbott / Cobra clubtail dragonfly (Gomphus vastus) female, Texas, USA, July.

John Abbott / Cobra clubtail dragonfly (Gomphus vastus) male, Palmetto State Park, Texas, USA, July.

John Abbott / Cobra clubtail dragonfly (Gomphus vastus) male, Texas, USA, July.

MYN / Dirk Funhoff / Green Snaketail (Ophiogomphus cecilia) on branch, Hassloch, Rhineland-Palatinate, Germany, August. meetyourneighbours.net project

John Abbott / Graygreen Clubtail (Arigomphus pallidus) female resting on ground, Pee Dee River, Horry County, South Carolina, USA, May.

John Abbott / Graygreen Clubtail (Arigomphus pallidus) male, Punch Bowl Landing, Pee Dee River, Horry County, South Carolina, USA, May.

John Abbott / Common Sanddragon (Progomphus obscurus) male just emerged from exuviae, Little Pee Dee River, Horry County, South Carolina, USA, May.

John Abbott / Clearlake Clubtail (Gomphus australis) male resting on ground, Cheraw State Park, Cheraw, Chesterfield County, South Carolina, USA, May.

John Abbott / Blackwater Clubtail (Gomphus dilatatus) male, Conway, Horry County, South Carolina, USA, May.

Bernard Castelein / Western clubtail (Gomphus pulchellus) female, Groot Schietveld, Wuustwezel, Belgium, May.

Bernard Castelein / Western clubtail (Gomphus pulchellus) close up of female, Groot Schietveld, Wuustwezel, Belgium, May.

Jussi Murtosaari / Common Club-tail (Gomphus vulgatissimus) male, eastern Finland, June.

Jussi Murtosaari / Green Snaketail (Ophiogomphus cecilia) in flight, Joutsa (formerly Leivonmaki), Finland, August.

Jussi Murtosaari / Small Pincertail / Green-eyed Hook-tailed Dragonfly (Onychogomphus forcipatus) female, Joutsa (formerly Leivonmaki), Finland, June.

Jussi Murtosaari / Green naketail dragonfly (Ophiogomphus cecilia) male resting on leaf. Leivonmaki National Park, Finland. June.

Jussi Murtosaari / Small pincertail dragonfly (Onychogomphus forcipatus) male resting on leaf. Leivonmaki National Park, Finland. June.

Jussi Murtosaari / Common clubtail dragonfly (Gomphus vulgatissimus) female resting on seedhead. Onkisalo, Finland. June.

Jussi Murtosaari / Common clubtail dragonfly (Gomphus vulgatissimus) female resting on seedhead. Onkisalo, Finland. June.