title: [Size of the binocular zone of the field of vision of insects].
abstract: The insects selected for measurements-- predators and anthophiles -- presumably possessed the ability of binocular estimation of distances. The margins of visual field and of the binocular zone in a compound eye could be traced by means of ophthalmological methods, such as observation of a pseudopupil or of a glow of ommatidia lit from inside. Predators as well as males of flies and drones, which intercept a point target against the sky, have the smallest binocular zone. They could not discover the distance to a target by binocular vision. Anthophiles have a broad binocular "window" pointing in antero--ventral direction; their binocular zone encloses 20--25% of facets. Predators hunting amidst the vegetation have the largest binocular zone (30--75%). The binocular zone of the eyes in the insects of large and middle size consists of 2--9 thousand of ommatidia.
mesh_terms: D000818:Animals; D007313:Insecta / Q000502:physiology*; D014785:Vision, Ocular
vernacular_title: Razmery binokuliarnoĭ zony pelia zreniia u nasekomykh