Cellar or Churchyard Beetles - Blaps species (Family Tenebrionidae)
These large beetles are entirely dull black in colour, with a distinctive tail-like extention of the wing-cases (body 20-30 mm long). They live in dark places in and around houses and other buildings, typically in kitchens, cellars, sheds, stables and barns, but may also occur in roof spaces where birds have been nesting. The beetles feed on any spilled or waste animal and vegetable matter, including badly stored grain, bran and other cereal products. When disturbed, these beetles have the interesting habit of adopting a sort of 'headstand', by extending the hind-legs and pushing against the ground, so tilting the whole body with tail-end upwards. If the disturbance continues, they can squirt a smelly, yellowish-brown fluid from the raised tip of the abdomen, sometimes to a distance of several centimeters. This fluid contains quinones, which are powerful skin irritants and provide the beetles with an effective defence mechanism to repel would-be predators.
[PICTURE IN THE BEETLE GALLERY]
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