Definition of cribellum in English:
cribellum
nounPlural cribella krɪˈbɛləmkrəˈbeləm
Zoology (in some spiders) an additional spinning organ with numerous fine pores, situated in front of the spinnerets.
Example sentencesExamples
- 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 kept the original function (making spinning threads), the colulus not.
- 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.
- Six spinnerets with different types of spigots and a specialised spinning organ called the cribellum.
Derivatives
adjective
Zoology This month we have something totally different - a cribellate species, Amaurobius similis.
Example sentencesExamples
- Classification of the cribellate spiders and some allied families.
- Vibration transmission characteristics of silk produced by the British cribellate spider Amaurobius similis were determined.
- Many of the cribellate species are distinctly arboreal, building their small webs on branch tips.
- Spiders of this type are said to be cribellate and the presence of a cribellum is a useful way to group species (those without one are said to be ecribellate).
Origin
Late 19th century: from late Latin, diminutive of cribrum 'sieve'.