ocellus

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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 ?
Both species have a profuse covering of brown spots with a large black or dark brown ocellate marking on the middle of the side, just behind the head.
A new species of Acanthobothrium (Cestoda: Tetraphyllidea: Onchobothriidae) from the ocellate river stingray, Potamotrygon motoro (Chondrichthyes: Potamotrygonidae), in Argentina Journal of Parasitology, vol.
Si distingue epr avere 12 o 13 raggi molli dorsali, 13 raggi molli anali, raggi 19 pettoral, 98-100 scaglie in serie longitudinale, i maschi con terza, quarta e quinta spina filamentosa, pinna caudale lanceolata, pinne pelvicche completamente unite, frenum pelvico presente e la colorazione: quattro ampie barre arancio-marrone scuro sul corpo con macchie irregolari inframmezzate; macchie arancio ocellate sulle spine e i raggi della dorsale; base della pinna anale con strette bande ravvicinate longitudinali di colore nero, arancio, blu e grigio-blu; pinne pelviche blu pallido o verde.