ocelli

Some freshwater species have separate light sensors referred to as ocelli or pseudocelli.

Nematoda 2008

A few moths are also provided with small simple eyes called ocelli; these are placed on top of the head and are so covered with down they cannot be distinguished save by experts.

Moths of the Limberlost Gene Stratton-Porter 1893

{Scanner's note: this is no longer a valid usage for the word "ocelli".

Explanation of Terms Used in Entomology John. B. Smith

The darker surrounding pigment heightens the reflective effect of the ocelli and makes them appear a brighter white.

Archive 2006-11-01 2006

We found that if P. shrevei is observed along the same plane from which light is directed, the normally obvious white ocelli cannot be seen against the reflection from all other scales.

Archive 2006-11-01 2006

The head is distinct and bears a ring of ocelli (simple eyes), shortened antennae, chewing mouthparts, and a spinneret.

Insecta (Aquatic) 2008

Compound eyes may be complemented with up to three ocelli.

Insecta (Aquatic) 2008

When viewed immediately after handling the lizards, the ocelli appear to pulse or fluctuate in brightness as the surrounding pigment changes intensity.

Archive 2006-11-01 2006

After a quiescent period, the ocelli are still reflective but do not appear as bright as when the surrounding skin pigmentation is darker.

Archive 2006-11-01 2006

But, when viewed from an angle oblique to the light source, the ocelli appear brighter, while surrounding scales show no reflection.

Archive 2006-11-01 2006