One of the mysteries of the English language finally explained.
(in some spiders) an additional spinning organ with numerous fine pores, situated in front of the spinnerets.
- ‘Six spinnerets with different types of spigots and a specialised spinning organ called the cribellum.’
- ‘When a Uloborus emerges from an egg sac, its cribellum is not formed and it can not produce capture threads until it molts (sheds its exoskeleton) and enters the next developmental stage.’
- ‘The cribellum is a cigar-shaped plate on the underside of the abdomen, in front of the spinnerets.’
- ‘Cribellate silk is combed out from the cribellum using the calamistrum, a group of specialized, curved setae on the metatarsus of the fourth leg.’
- ‘The cribellum kept the original function (making spinning threads), the colulus not.’
Late 19th century: from late Latin, diminutive of cribrum ‘sieve’.
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