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A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata. About 3,000 extant species of dragonflies are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threatens dragonfly populations around the world. Adult dragonflies are characterised by a pair of large ...
The green darner is a large dragonfly; males grow to 76 mm (3.0 in) in length with a wingspan up to 80 mm (3.1 in). [9][10] Females oviposit in aquatic vegetation, eggs laid beneath the water surface. Nymphs (naiads) are aquatic carnivores, feeding on insects, tadpoles, and small fish. Adult darners catch insects on the wing, including ant ...
The emperor dragonfly is a large and bulky species. It is 73–82 mm (2.9–3.2 in) long, with average being 78 mm (3.1 in) and males growing larger than females. [ 2 ][ 6 ] The average wingspan is 104 mm (4.1 in). [ 6 ] When they first emerge, both sexes appear pale green with brown markings. The legs are brown with a yellow like base.
L. depressa. Binomial name. Libellula depressa. Linnaeus, 1758. Libellula depressa, the broad-bodied chaser or broad-bodied darter, [1] is one of the most common dragonflies in Europe and central Asia. It is very distinctive with a very broad flattened abdomen, four wing patches and, in the male, the abdomen becomes pruinose blue.
P. longipennis. Binomial name. Pachydiplax longipennis. (Burmeister, 1839) The blue dasher (Pachydiplax longipennis) is an insect of the skimmer family. It is the only species in the genus Pachydiplax. It is widely distributed throughout North America and into the Bahamas. [2]
The larvae develop within 38 to 65 days, [17] which allows this migrant dragonfly to reproduce in temporary waters or even in swimming pools. [18] However, the larvae seem to be very sensitive to temperature. [19] The life expectancy is not known and because of their high mobility it is almost impossible to determine.
The smallest living dragonfly is Nannophya pygmaea (Anisoptera: Libellulidae) from east Asia, with a body length of 15 mm (0.59 in) and a wing span of 20 mm (0.79 in). The smallest damselflies (and also the smallest odonates) are species of the genus Agriocnemis (Zygoptera: Coenagrionidae) with a wing span of only 17–18 mm (0.67–0.71 in). [7]
Linnaeus, 1758. Libellula quadrimaculata, known in Europe as the four-spotted chaser and in North America as the four-spotted skimmer, is a dragonfly of the family Libellulidae found widely throughout Europe, Asia, and North America. The adult stage is found between April and early September in the United Kingdom, and from mid-May to mid-August ...