Four-winged fliers seem to be the first arthropod model to have cracked the issue of effective flight. Show
Asked by: Alain Bertrand, by email Advertisement Insects are arthropods and the basic arthropod body type is to have bilaterally symmetrical body segments with a pair of legs on each one. Segments on the most primitive arthropods tended to perform the same functions, but more recent lineages have fused many of the segments together and dedicated those that remain to certain roles. There are some extinct insects (such as the Palaeodictyoptera) that had six wings, but these probably weren't terribly effective fliers. The four-wing model is the first to really crack the problem of flight, and insects that look essentially like modern dragonflies are present in the fossil record at least as far back as 320 million years ago. Some insect orders have subsequently evolved one of their pairs of wings into a protective cover (such as beetles) or reduced them to tiny vestigial balance organs, as in the case of true flies. Advertisement Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun science facts.
Luis VillazonQ&A expert Luis trained as a zoologist, but now works as a science and technology educator. In his spare time he builds 3D-printed robots, in the hope that he will be spared when the revolution inevitably comes. The true flies belong to the Order Diptera and include many common insects such as mosquitoes, midges, sand flies, blowflies and the House Fly. Most of the insects we see flying around do so with four wings (two pairs). However, dipterans (meaning 'two wings') use only one pair. The other pair of wings is reduced to club-like structures known as 'halteres' that they use for balance. What do flies look like?Size:
Body:
Antennae:
Eyes:
Mouthparts:
Wings:
Limbs:
Abdomen tip:
Where are flies found?
What do flies do?
What looks similar?
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You may also be interested in...What do mayflies look like?Mayflies belong to the Order Ephemeroptera. Average wingspan Discover moreWhat are insects?In order to answer this question we must look at where insects fit in the animal kingdom. The animal kingdom is divided into several groups called phyla. Discover moreInsectsExplore the fascinating world of insects from beautiful butterflies to creepy crawly cockroaches! The Australian Museum Entomology collection contains mostly Australian species, but there is a significant non-Australian representation of beetles, psocids (booklice), flies, butterflies and moths. Entomology Learn moreCarrai Cave SpiderThe Carrai Cave Spider is characterised by the enlarged tarsal claws on the front legs and their small but unique prey catching webs. The spiders are a glossy fawn brown in colour, somewhat darker on the head and jaws region. Progradungula carrai Discover moreBlack House SpiderBlack House Spider is common in urban areas, and is sometimes called the Window Spider. Badumna insignis Discover morePraying mantises: Order MantodeaStick insects and praying mantids were once treated as orthopterans (with grasshoppers, locusts, crickets and katydids) but are now in their own orders - Phasmatodea and Mantodea respectively. Discover moreWhat do beetles look like?Beetles, which include weevils, belong to the Order Coleoptera. Discover moreWhat do stylops look like?Stylops belong to the Order Strepsiptera. Discover moreWhat do psyllids look like?Psyllids, along with aphids, scale insects and whiteflies, belong to the Order Hemiptera, suborder Sternorrhyncha. Do flies have 2 wings?Flies belong to the order Diptera (two wings); they have two, membranous forewings and vestigial hind wings that have been reduced to knobs called halteres (which help the insect balance). They have mouthparts that may be adapted for piercing, lapping or sponging.
Which fly has 2 sets of wings?Wings. Both dragonflies and damselflies have two sets of wings, but there are some distinct differences in their wings that can help differentiate between the two. Dragonflies have two sets of similar-sized wings, but the hind wings become more broad at the base, where they attach to the body.
Do flies feel pain in their wings?As far as entomologists are concerned, insects do not have pain receptors the way vertebrates do. They don't feel 'pain,' but may feel irritation and probably can sense if they are damaged.
Do house flies have 2 pairs of wings?Like other Diptera, houseflies have only one pair of wings; what would be the hind pair is reduced to small halteres that aid in flight stability.
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