ocellus


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Related to ocellus: simple eye, ocelli

ocellus

(pl. ocelli): see eyeeye,
organ of vision and light perception. In humans the eye is of the camera type, with an iris diaphragm and variable focusing, or accommodation. Other types of eye are the simple eye, found in many invertebrates, and the compound eye, found in insects and many other
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ocellus

[ō′sel·əs]
(invertebrate zoology)
A small, simple invertebrate eye composed of photoreceptor cells and pigment cells.
(petrology)
A phenocryst in an ocellar rock.
References in periodicals archive ?
Scutum with short erect hairs, their length equal to about half the diameter of the ocellus (Fig.
A1), with primary males possessing no ocellus and secondary males typically exhibiting a faded scar of the ocellus.
This fish (https://www.youtube.com/watch?v=FPu80HDdloY), identified from the video on 24 June 2016 by William Bushing, resembled the first individual Bushing encountered; brown and unmarked except for a dark ocellus behind the eye, with extensive blue edging on the pectoral and anal fins.
Parafrontalia yellow, golden pruinose, at the narrowest point about 0.50 of anterior ocellus; inner verticals long and decussate.
Male with a pair of reclinate orbitals setae in front ocellus M.
Measurements and abbreviations used here include: F1-F12 for the 1st and subsequent flagellomeres; POL (post-ocellar distance) for the distance between the inner margins of the posterior ocelli; OOL (ocellar-ocular distance) for the distance from the outer edge of a posterior ocellus to the inner margin of the compound eye; and LOL (lateral-frontal ocelli distance) for the distance between lateral and frontal ocelli.
The most remarkable trait of this species is a pair of large inguinal glands with dark ocellus and color pattern in dorsal view is brown with dark spots.
Head with cheeks slightly bend to the base; anterior ocellus located on a projection between the antennal bases; postocular setae acute and with the same length as eyes (Fig.
Collectively known as Bush Browns, they possess a regular series of submarginal ocelli on the hindwings, and a pair of ocelli on the forewings, of which the lower ocellus is always the largest.
You might like to place an ocellus or black spot on the tail of your fly using a magic marker.
While storytelling has become central to the company's repertoire, early pieces like Ocellus, Ciona, Pseudopodia and later works like Gnomen and Symbiosis create fascinating shifting forms that challenge the limits of the human body.