where do whirligig beetles live

Most whirligig beetles will not live even 1 full year. Whirligig beetle, (family Gyrinidae), any of about 700 species of beetles (insect order Coleoptera) that are widespread throughout the world and are usually seen in groups, spinning and whirling around on the surfaces of quiet ponds or lakes.Whirligig beetles prey on insects and other creatures that fall on the water surface. Whirligig beetles are referred to in Kaufman and Eaton’s Field Guide to Insects of North America as the “bumper cars of the beetle world.”” Looking like dark watermelon seeds, mobs of whirligig beetles scoot across the still waters of ponds, lakes, and the slower sections of streams and rivers. Lond. The whirligig beetles have compound eyes, and it looks at first as if there are four of them. By swimming behind other beetles they can take advantage of forward-moving drafts. One beetle family, the whirligig beetles, has divided eyes so that when they are swimming they can see on top of the water and under the water at the same time. [1] In this respect they recall the horizontally divided eyes of the four-eyed fishes (Anableps), which also live at the surface of the water. For example, relatively hungry beetles go to the outside of a group, where there is less competition for finding food, but higher risk of encountering predators. Mature larvae pupate in a cocoon that also is attached to water plants. They can swim almost as effortlessly underwater as they do on the surface, making them difficult to catch. Such action is called drafting. However, most species are handsomely coloured with a sombre lustre of steely grey or bronze. Most species are very similar in general appearance, though they vary in size from perhaps 3 mm to 18 mm in length. Beetles that are aquatic in all life stages include ‘Whirligig Beetles’ (Gyrinidae). AE: No, we’re talking about beetles. Their integument is finely sculpted with little pits; it is hard and elastic and produces a water repellent waxy outer layer, which is constantly supplemented. AE: Yeah, whirligigs. This allows them to dive and swim under well-oxygenated water for indefinite periods if necessary. The more beetles in an aggregation, the more quickly the group as a whole responds to the approach of stimuli. These are water beetles that normally live on the surface of the water. There are two variations of this species, one in the North and one in the South (the northern version has darker legs). Gyrinids (the whirligig beetles) are those beetles that you’ve probably seen scurrying in groups across the surface of a pond. B. Rolf G. Beutela, Ignacio Riberab, Olaf R.P. Such is the popularity in Japan that vending machines dispensing live beetles were developed in 1999, each holding up to 100 stag beetles. Staphylinids (rove beetles) are usually predatory, both as larvae and as adults. They are known for the bewildering and rapid gyrations in which they swim, and for their gregarious behavior. Their bodies are oval, flattened, and metallic bluish black in colour. Gyrinidae (Whirligig Beetles) is a family of beetles. The positions that individuals occupy within a group are determined by a number of factors, thought to include hunger, sex, species, water temperature, age, parasite level and stress level. Beetles in the family Gyrinidae, commonly known as whirligig beetles, live the life aquatic at the interface between the world of air and sunlight and the world of swirling water. The economies that the beetles can gain by suitably adjusting their positions within the group, are important when individuals swim against the flow of a stream. [citation needed], The beetles could use the waves generated by their moving as a sort of radar to detect the position of object on the water surface around them. Figure 2. Whirligig beetles feed at the water surface on insects that have fallen in the water. Their coloration is not showy and they can be quite hard to see if they are not moving or are under water. Those are the beetles that are swimming along the surface of the water and as you approach they start speeding up and go into this frenetic activity. whirligig beetles Habitats The environments in which many whirligig beetles species are known to live. Morphologically, they’re quite different from hydrophilids and dytiscids – they’re adapted to life on the water surface, but they are adept at swimming below the water’s surface too. The beetle has four long, orange, flattened legs that can make 60 strokes a second. Known occurrences, collected specimens and observations of whirligig beetles. The whirligig beetles are a family (Gyrinidae) of water beetles that usually swim on the surface of the water if undisturbed, though they swim underwater when threatened. The beetles gather in groups and move in what appears to be a chaotic way. They can live in ponds, swamps, bogs, lakes, streams and rivers. In practice though, their ecological adaptation is for the adults to scavenge and hunt on the water surface, so they seldom stay down for long. They get their common name from their habit of swimming rapidly in circles when alarmed, and are also notable for their divided eyes which are believed to enable them to see both above and below water. Their coloration is not showy and they can be quite hard to see if they are not moving or are under water. This insect lives in Eastern North America, as far south as Florida; its range extends west to Nebraska and eastern Kansas. 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