(a species of owlet moth (Noctuid)) Some caterpillars, after they emerge from their egg, can increase their weight by 25,000 times.

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Bark sac spider, Clubiona corticalis

Body size

Female to 10 mm; male to 10 mm.

Appearance

Carapace glossy brown with dark jaws. Abdomen with a dark central mark becoming a pattern of chevrons towards the rear. The two sexes are similar (photo).

Habitat, range and season

Old trees and buildings. Occasionally found in houses walking across the walls. Europe and much of Asia. Adults occur from April to September.

Web

None.

First recorded in the UK

1841.

Bite reports

'Immediate pain to finger, followed by blisters on arm.'

UK spider bites

Print version
Cartoon image of a snake disappearing through closing door

There are 27 km of specimen shelves in the Darwin Centre - the same distance as between the Museum and Junction 6 of the M1.