cribellum


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Related to cribellum: Calamistrum, colossus

cribellum

[krə′bel·əm]
(invertebrate zoology)
A small accessory spinning organ located in front of the ordinary spinning organ in certain spiders.
A chitinous plate perforated with the openings of certain gland ducts in insects.
References in periodicals archive ?
Ontogenetic changes in cribellum spigot number and cribellar prey capture thread stickiness in the spider family Uloboridae.
Griswold (1990), the author who most recently tried to define Amaurobiidae, defines the family as having a divided cribellum, the simple, sclerotized retrolateral and dorsal tibial processes on the male palp, and two rows of metatarsal and a single row of tarsal trichobothria (sensu Lehtinen 1967).
It is only after reeling appears regularly in the repertoire of orbweavers (after the loss of the cribellum among Araneoidea), that selective forces can help to mold this new tactic.
1 x of a field length); seam and posterior plate margin sclerotized (in male, cribellum almost as wide as in female but with nonfunctional fields).
54 wide, fine detail of anal tubercle, spinnerets and cribellum not clear, situated ventrally, advanced from the posterior margin (Figs.