ocelli


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Related to ocelli: ocellus

ocelli

simple eyes of insects.
References in periodicals archive ?
Ocelli are in a single row across the dorsal anterior tip and extend posteriorly into the pale zone.
25x as wide as mesosoma (23:18); occiput transversely finely striated just around opening of neck, antero-medially with fine and dense oblique striation, towards sides finely and densely longitudinally striated; hyperoccipital carina absent; vertex behind ocelli transversely finely reticulatestriated, the rest reticulate-coriaceous (at most slightly transversely so); frons in about upper half smooth, along eyes weakly transversely reticulate-coriaceous, in lower half distinctly and transversely reticulate-striate.
Ventral trunk with series of 10-11 white ocelli with dark margins bilateral to median longitudinal ventral keel, spots below inferior trunk ridge near posterior margin of trunk rings 2 through 11-12.
Head: Scape bare except for marginal ring of short setae; pedicel short and setose, with some longer ventral apical setae; frontal vitta with strongly convex elongate oval area surrounding ocelli and extending half the distance from anterior ocellus to anterior margin of frons; 2 pairs of fronto-orbital setae, 1 large and above level of ocelli, 1 smaller below; postocellar, outer and inner vertical setae well-developed.
Easy: The gulf flounder has three prominent ocelli, or "eye spots" on its back: two front, one near the tail.
Dark spot behind gills large, forming 4 1-2 conspicuous white-rimmed ocelli or merged double ocelli without dark brown bar immediately behind 3a.
3); ocular carinae evident, others inconspicuous; a median depression anterior to the ocular tubercle and a posterior median longitudinal furrow are evident; median ocular tubercle low, located in the posterior half of the anterior third of the carapace, with dense thin granulation and few greater granules; lateral ocular tubercles each with four ocelli, the posterior most is very reduced and unaligned with the remaining three pairs (Fig.
The simple eyes, called ocelli, are set in a triangle between the compound eyes.
Head slightly swollen, shiny, strongly punctate and sculptured by irregular striae; frontal line complete; occipital carina complete; POL = 3; OL = 4; OOL = 8; OPL = 2; TL = 8; greatest breadth of posterior ocelli about as long as POL.
Their name comes from the three distinct ocelli, or eye-like spots, on their top sides.