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There are 57 recorded species of Odonata in Britain, made up of 21 damselflies (suborder Zygoptera) and 36 dragonflies (suborder Anisoptera). Of these, 42 species (17 damselflies and 25 dragonflies) are resident breeders, and the remainder are either extinct species, or vagrants - in respect of the latter, this list follows the decisions of the Odonata Records Committee.
Dragonfly nymphs vary in form with species, and are loosely classed into claspers, sprawlers, hiders, and burrowers. [17] The first instar is known as a prolarva, a relatively inactive stage from which it quickly moults into the more active nymphal form. [37]
Cordulegastridae nymphs will almost entirely conceal themselves in sand or silt, exposing only their eyes to see, antennae for sensing prey, and the tip of their abdomen to breathe dissolved oxygen. [11] Nymphs will consume any prey they can capture, going as far as eating smaller larvae of the same species. [12]
The sighting of the two species also comes as non-native dragonfly species are cropping up in the U.K. “ at a greater rate than ever before,” according to a 2021 report from the Natural ...
Odonata is an order of predatory flying insects that includes the dragonflies and damselflies (as well as the Epiophlebia damsel-dragonflies). The two major groups are distinguished with dragonflies (Anisoptera) usually being bulkier with large compound eyes together and wings spread up or out at rest, while damselflies (suborder Zygoptera) are usually more slender with eyes placed apart and ...
Some species of damselfly have elaborate courtship behaviours. Many species are sexually dimorphic, the males often being more brightly coloured than the females. Like dragonflies, they reproduce using indirect insemination and delayed fertilisation. A mating pair form a shape known as a "heart" or "wheel", the male clasping the female at the ...
The nymph of the gray sanddragon is large in size with a length of 1 inch (25 mm). This dragonfly nymph is sandy brown in color and has short legs covered with stiff bristles. Its abdomen turns up at the tip, and there is a single, rear-facing spine on every side of abdominal segments three through nine.
The species is one of the most common and most widespread dragonflies in Europe. The range in the Western Palearctic covers a large part of Europe, to Scotland and southern Scandinavia in the north and to Italy (without the southwest) and the northern Balkans in the south); the eastern boundary is formed by the Urals and the western by Ireland.