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Dragonflies are predatory insects, both in their aquatic nymphal stage (also known as "naiads") and as adults. In some species, the nymphal stage lasts up to five years, and the adult stage may be as long as 10 weeks, but most species have an adult lifespan in the order of five weeks or less, and some survive for only a few days. [ 4 ]
Sympetrum is a genus of small to medium-sized skimmer dragonflies, known as darters in the UK and as meadowhawks in North America. The more than 50 species predominantly live in the temperate zone of the Northern Hemisphere; 15 species are native to North America. No Sympetrum species is native to Australia.
The immature meadowhawk dragonflies feed on various organisms that can be found in aquatic environments. Some of their prey items include fly larvae, mosquito larvae, mayfly larvae, shrimp, and small fish. The adult meadowhawks feed on smaller, typically flying insects. This, for example, includes mosquitoes, flies, moths, and mayflies.
In North America, there is a northward migration of these dragonflies from tropical areas in the summer, and a southerly migration in the fall; presumably these are a different generation, but the biology of this species is little known. [3]
Here's what else to know about dragonflies on the lakefront, from how much longer they'll be around to new species in Wisconsin. Dragonflies are seen flying in Bayside on Monday, Aug. 29, 2022.
An aggregation of dragonflies during migration. The globe skimmer, as its name suggests, has a very wide distribution area, between about the 40th parallels of latitude or within the 20 °C isotherm (areas of the world where the annual mean temperature is above 20 degrees Celsius), and up to about the 50th parallel north in North America.
Dragonflies are considered some of the earliest winged insects dating back over 300 million years ago, before dinosaurs, experts say. Warmer weather means more critters Georgia has 47 species of ...
Somatochlora sahlbergi adults are medium-sized (about 4.8 cm (1.9 in) long [7]) dragonflies with dark, metallic green bodies and transparent wings, much like other species of Somatochlora. [8] Unlike some other species in the genus, there is very little paler yellow marking on the thorax and abdomen. [ 7 ]