Hoverflies come in all shapes and sizes. Most are inconspicuous and stay under two centimetres in length, such as the small gits that look somewhat like gunflies and can often be found on dandelions or daisies.
A number of conspicuous hoverflies, such as bee flies and fop wasps, mimic hymenoptera such as wasps, bees, or bumblebees, by their strikingly bright colours, corresponding colour patterns or body hair on thorax and abdomen. Hoverflies resembling bumblebees have a hairy abdomen, species resembling wasps usually do not. Resembling other, more dangerous animals in colour, shape and/or sound is called mimicry and occurs in very many animal groups.
The important differences are;
wings; hoverflies have two, hymenoptera four.
build; a hoverfly often has no waist, hymenoptera often does.
antennae; the antennae are three-part in hoverflies and immobile, hymenoptera have movable antennae with more than three members.
eyes; fly eyes are almost round and fill a large part of the head, eyes of hymenoptera are elongated (they appear to look mischievous) and fill in less of a large part of the head.
flight; compared to the much heavier bumblebees, bees and wasps, hoverflies are very agile and have the ability to hover perfectly still, to 'hover'; hence their name.
                                
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