seta

(redirected from setae)
Also found in: Dictionary, Thesaurus, Medical, Acronyms.

seta

[′sed·ə]
(biology)
A slender, usually rigid bristle or hair. Also known as chaeta.
In mosses and liverworts, the stalk of the sporophyte supporting the capsule.
References in periodicals archive ?
Pronotum wider than long, nearly smooth, with 5 pairs of long setae other than the anteroanglular setae.
Parafacial bare on basal two-thirds; postpronotal lobe with three postpronotal setae almost in line and one weaker anterior postpronotal seta usually in front of inner postpronotal seta; surstylus in lateral view almost straight throughout its length with margins slightly parallel-sided and apex rounded (Figs.
Prothoracic spatula: length, 0.3 mm, 6 teeth anteriorly, middle tooth larger than lateral teeth; group of 3 lateral papillae on each side of spatula, 1 papilla with setae, 2 bare.
The distal segments bear long, plumose setae that act as paddles to move water.
Mandibular palp small, uniramous; basis unarmed; endopod 1-segmented with 1 lateral and 8 distal setae.
Ventral submarginal setae slender, each 3-5 [micro]m long; with seven pairs in two parallel longitudinal rows on each side of body between posterior spiracle and anal cleft, with outer row of submarginal setae slightly longer than setae on inner row; one seta on area between anterior and posterior stigmatic areas, and one pair of longer ventral cephalic setae, each 7-10 [micro]m long.
Pocock (1901) noticed the presence of plumose setae, which he did not name or recognize as stridulatory, on the retrolateral face of the palpal trochanter and on the prolateral coxa I of spiders of the genus Pterinopelma Pocock, 1901 (similar to those of Brachypelma Simon, 1891).
Postantennal Region: Gular plate highly sclerotized, unfused with other head plates, pointed anteriorly and flat posteriorly; short temple margins, smoothly becoming flat with posterior head margin smooth and straight; marginal temporal carina thin; marginal temporal setae five, seta 3 dominant; post temporal setae (pts) present, very minute microsetae; post temporal sensillae not visible; pre-ocular and ocular setae peg like microsetae, off the lens and on the lens respectively; postocularnodus absent.
Sternal setae st1, st2, st3, st4 and pre-anal setae Jv1-Jv3 pilose, st4 smooth and needle-like, setae st1-st3 equal in length and clearly longer than other setae on holoventral shield.