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.
Near to the labial tip, subapically, the elongated plate sensillum was present in representatives of the outgroup (K27); however, it was absent in the Nepomorpha.
12) with scape about 2.9x as long as wide; funicle (excluding 3 anelli) 4-segmented, F1, F3 and F4 subequal in length, F2 slightly longer; clava 3-segmented, apical segment with a spicula; funicle and claval segments with long hairs and each with at least 2 hairlike longitudinal sensilla (except only 1 such sensillum on F1).
A high quality, archived recording from a peg sensillum of Smeringurus mesaensis Stahnke 1957 (Scorpiones: Vaejovidae; formerly Paruroctonus mesaensis) and a new recording from a peg sensillum of Paruroctonus utahensis Williams 1968 (Scorpiones: Vaejovidae), collected near Kermit, Texas, USA (31[degrees] 57' 46.44" N, 102[degrees] 58' 53.59"W) formed the data set for this paper.
There was no great variation in the width of sensilla, where as sensillum with a pore or opening to the exterior were measured and classified based on their diameter.
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.