Download A Guide to the Beetles of Australia by George Hangay PDF

By George Hangay

Winner of the 2010 Whitley Medal

A consultant to the Beetles of Australia is an engaging creation to this large and numerous crew of bugs – the Coleoptera. Beetles make up forty% of all bugs. The variety of identified beetle species on the planet – greater than 350,000 – is greater than six occasions the variety of all vertebrate species.

New beetle species are being came across for all time. Of the 30,000 species that could ensue in Australia, merely 20,000 were scientifically defined. those comprise round 6,000 weevils (Curculionidae), 3,000 scarabs, dung beetles and chafers (Scarabaeidae) and 3,000 leaf beetles (Chrysomelidae).

A consultant to the Beetles of Australia highlights the large variety of this particular insect Order. It emphasizes the environmental function of beetles, their relationships with different vegetation and animals and their value to humans.

Key features
• Treats all major households of Australian beetles
• presents an advent to beetle biology
• Copiously illustrated with top of the range photos

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Additional info for A Guide to the Beetles of Australia

Sample text

5 mm) beetles, when disturbed, can fold their heads and pronotum downwards, forming an almost perfect ball. They can fall and roll out of sight within a split second. Many other beetles simply tuck their legs against their compact, rounded bodies, taking up the appearance of a seed, small lump of dirt or pebble. Some others behave as if they are suffering from a cramp – they stretch out with legs in unnatural poses and their entire body becomes rigid. They hold this stance even if moved about, although some do it only for a certain time, and then suddenly come to life again to make a swift getaway.

If they turned to the left, they had to repeat the run from the start. This rather simple training brought results. After a certain number of runs a certain number of larvae ‘learned’ to turn right instead of left. The experiment was carried out with adult beetles too, with more or less the same result. But what followed, was truly interesting. First, the ‘trained’ larvae, those that knew that turning right was ‘good’, were allowed to pupate and change into adult beetles. Now these freshly emerged beetles were trained to learn the same task, but the other way around.

8–11 mm), with a small pronotum and a reduced prosternum. They can compact themselves by folding their head under, resting tightly against the ventral side of the body. They usually can be found on vegetation near water. Some frequent flowers, others rotting vegetable matter. ) Only one family, Buprestidae, belongs to this superfamily. These are the jewel beetles and are very different from all other beetles. Because their general shape is distinctive, most species are easily recognised as jewel beetles.

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