| 1. | However, most modern groups of spiders have lost the cribellum.
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| 2. | The lack of a functional cribellum in araneoids is most likely synapomorphic.
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| 3. | They often have a calamistrum on metatarsus IV associated with a cribellum.
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| 4. | The cribellates retained the ancestral character, yet the cribellum was lost in the escribellates.
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| 5. | Placing Leptonetidae as a derived member of the Haplogynae would require independent evolution of the cribellum.
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| 6. | The ratio between calamistrum length and cribellum width varies greatly, however, even among related species.
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| 7. | They also have a calamistrum an apparatus of bristles used to comb the cribellate silk from the cribellum.
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| 8. | The length of a spider's calamistrum is always equal to or greater than the width of the cribellum.
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| 9. | Instead, to capture prey the spider uses its legs to comb webbing across its cribellum, a spiked plate near the spinnerets.
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| 10. | The Deinopoidea ( including the Uloboridae ), have a cribellum a flat, complex spinning plate from which the cribellate silk is released.
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