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Setae on the foreleg of a mayfly. Annelid setae are stiff bristles present on the body. They help, for example, earthworms to attach to the surface and prevent backsliding during peristaltic motion. These hairs make it difficult to pull a worm straight from the ground. Setae in oligochaetes (a group including earthworms) are largely composed of ...
For example (in reptiles), the coral snakes (family Elapidae) are well-known as venomous, while the non-venomous milk snakes appear visually very similar, utilizing mimicry to their advantage. If roughly stimulated or held, lasiocampid larvae are likely to writhe and lash about, forcing the stinging bristles into any vulnerable surface they can.
They may be irregular or align in two or more rows. The number of rows, the number of setae in each row, the size and the thickness are significant. In many groups, the acrostical setae are replaced by setulae or hairs. prescutellar (psc) two acrostical bristles, more developed than the other acrosticals, inserted in front of the scutoscutellar ...
Drawing of the statocyst system Statocysts (ss) and statolith (sl) inside the head of sea snail Gigantopelta chessoia. The statocyst is a balance sensory receptor present in some aquatic invertebrates, including bivalves, [1] cnidarians, [2] ctenophorans, [3] echinoderms, [4] cephalopods, [5] [6] crustaceans, [7] and gastropods, [8] A similar structure is also found in Xenoturbella. [9]
The ultrastructure of chaetae is fundamentally similar for all taxa but there is vast diversity in chaetal morphology. [4] Moreover, chaetae bear precise characters for determination of species and taxonomic assessment.
Examples Search for titles containing the word or using the prefix: gala, galum: G γάλα (gála) milk: soap plants, Chlorogalum: garrulus: L: chattering, talkative: Garrulus, a genus of jays; Bohemian waxwing, Bombycilla garrulus Eupithecia garrula, an inchworm moth; chestnut-winged chachalaca, Ortalis garrula
Scopulae, or scopula pads, are dense tufts of hair at the end of a spiders's legs.They are found mostly on hunting spiders, for example Salticidae and Sparassidae.Scopulae consist of microscopic hairs, known as setae, which are each covered in even smaller hairs called setules or "end feet", resulting in a large contact area.
In both those examples there is heavy modification by sclerotisation. Again, contrasting strongly with both unmodified organic material such as largely pure chitin, and with sclerotised chitin and proteins, consider the integument of a heavily armoured crab, in which there is a very high degree of modification by biomineralization.