Damselflies! Click to view slideshow:
Dragonflies and damselflies are closely related, both are part of the insect order Odonata. However, they are not the same! Odonata includes about 5,900 species of which about 3,000 are dragonflies (suborder Epiprocta, infraorder Anisoptera) and about 2,600 are damselflies (suborder Zygoptera).
Here are five differences to look for:
★ Size: Dragonflies are generally much larger. The most common dragonfly in The Netherlands (Ruddy darter) is 3.4-3.6 cm long and has a wingspan of 6 cm. The most common damselfly in The Netherlands (Blue-tailed damselfly) is 2.7-3.5 cm long and has a wingspan of 3.5 cm.
→ Fun fact: the largest extinct dragonfly had a wing span of 70-75 cm (roughly 30 inches)!
★ Eyes: Dragonflies have much larger eyes than damselflies, their eyes take up most of the head and they are wrapped around from the side to the front of the face which kind of makes it look like dragonflies are wearing snow goggles. Damselflies also have large eyes, but the eyes are clearly separated and appear on each side of the head. →See picture below!
★ Body shape: Dragonflies have bulkier, stocky bodies that appear shorter and thicker. Damselflies have long and slender bodies.
★ Wing shape: Both dragonflies and damselflies have two sets of wrings, but the shapes are different. Dragonflies have hind wings that broaden at the base, which makes them larger than the front wings. Damselflies have wings that are the same size and shape for both sets, and they taper down as they join the body, thus becoming quite narrow as they connect.
★ Position of the wings when resting: Dragonflies hold their wings out perpendicular to their bodies when resting, so they look like small airplanes. Damselflies fold their wings up and hold them together across the top of their backs, from a distance they kind of look like a very thin safety match.