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Damselfly Nymph (illustration)
Damselfly Nymph (image)
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Damselfly Nymph
Damselflies are related to dragonflies.

What they look like:
Damselfly Nymphs have slender bodies, with three long tail-like gills at the end. They have extendable jaws that fold up under the head (like Dragonfly Nymphs), and legs close behind their head. Large compound eyes (eyes made from lots of smaller eyes) give them excellent vision.

Size:
16-33 mm long.

Where they live:
Damselfly Nymphs live on plants, among stones and leaf litter at the bottom of ponds or slow-flowing rivers.

What they eat:
Damselfly Nymphs are predators and feed mostly on other insects in the water, but they also can be cannibals, eating each other. Some larger species have been known to feed on small fish. They catch their food with a toothed lower lip (labium) that is usually folded under the insect's head. When a small insect comes near, the nymph will shoot out its lower lip to grab its prey. The lip is then pulled back and feeding begins.

Pollution tolerance: Tolerant, rating 3.
Damselfly Nymphs are sensitive to habitat disturbance. They need aquatic or riparian vegetation in the waterways where they live.

What’s interesting about the Damselfly Nymph?
  • More than eight-tenths of their brain is devoted to analysing visual information.

  • They do not go through a pupal stage to become an adult.

  • They keep the population of mosquitoes and flies under control.

Where they fit in:
> Phylum Arthropoda > Class Insecta > Order Odonata > Sub Order Zygoptera > Family (11 Australian families): Hemiphelebiidae; Coenagrionidae; Isostictidae; Protoneuridae; Lestidae; Lestoideidae; Megapodagrionidae; Sylestidae; Amphipterygidae; Calopterygidae; Chlorocyphidae
 

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