sensillum


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sensillum

(sĕn-sĭl′əm)
n. pl. sen·silla (-sĭl′ə)
A simple sense organ of an arthropod or other invertebrate that consists of one cell or a few cells and may take the form of a hair or bristle.

sensillum

(pl. sensilla) any small sense organ or receptor (particularly in insects) used for the detection of touch, taste, smell, heat perception, sound or light perception. While most sensilla respond to stimuli from outside the body - for example, taste organs in the feeding of many butterflies and flies -some sensilla act as proprioreceptors, detecting internal changes such as the flexion of joints.
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References in periodicals archive ?
vitrata possessed 3 sensilla basiconica (Bl, B2, B3), 2 sensilla styloconica (S1, S2), and 1 sensillum chaeticum (C), whereas in P.
adspersus may be considered relatively simple, from an evolutionary point of view, especially when compared to the complex repertoire of up to 6-10 different sensillum morphotypes described in snapping shrimp (Obermeier and Schmitz, 2004), crayfish (Mellon, 2012), and spiny lobsters (Cate and Derby, 2001).
On ventral surface: successively one, two and one coeloconicum sensillum on Vt1 (no.
4x as long as wide, with cross-ridges, a little shorter than clava; pedicel much longer than F1 (the shortest funicle segment); F2, F6, and often F4 the longest funicle segments (F6 sometimes slightly longer than F2 and F4), F3 and F5 slightly shorter (F5 sometimes almost as long as F4); F1-F3 and F5 without longitudinal sensilla, F4 with 1 longitudinal sensillum, and F6 with 2 such sensilla; clava 2.
While the B event appears to be separate from A1 and A2, this does not preclude the possibility that it could result from the coupling of at least two other events within the peg sensillum.
1a); and (b) Blunt trichoidea are hair like, the tip of the sensillum is slightly blunt and based on their length further classified into a (a-iii) long blunt-tipped sensilla [STr III] 29.
Smaller type of sensillum present on anterior margin (between sinuses) of cephalic region, abundant in interspaces between larger sensilla.
Infrared radiation strikes a sensillum and heats a little sphere inside it.
Hair sensillae are the most widespread type of sensillum on the arthropod exoskeleton.
0 times as long as wide, with 1 small sensory sensillum (appendage) on apex and 2 campaniform sensilla under half of length of antennomere.