cribellum

(redirected from Colulus)
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cribellum

(krɪˈbɛləm)
n, pl -la (-lə)
(Zoology) a sievelike spinning organ in certain spiders that occurs between the spinnerets
[C19: New Latin, from Late Latin cribellum, diminutive of Latin cribrum a sieve]
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References in periodicals archive ?
Spigots: AC = aciniform gland spigots(s), CO = colulus, CY = cylindriform gland spigot(s), PI = pyriform gland spigot(s), SH = serrate hairs.
Of the similar genera (Table 1), the new genus Himalmartensus is similar to Rubrius and some Macrobunus species by having a single hairy colulus (Figs.
The link between maternal care and subsociality led to a prediction: because maternal care in theridiids optimized to the "lost colulus clade" (Anelosimus plus Theridiinae, see Agnarsson 2004 fig.
This evidence is consistent with predictions based on phylogenetic analysis that maternal care is primitively present in the lost colulus clade, the lineage containing all social theridiids.
Spinnerets with colulus represented by two setae; ALS conical, 2-segmented, contiguous, twice the width of the PLS; ALS with 3 spigots (piriform) and 3 nubbins; PMS with 3 spigots (aciniform) and 2 nubbins; PLS with 3 spigots (aciniform) and 3 nubbins.