The ocellus of the cockroach, Periplaneta americana (Blattariae)

Abstract

The ocelli of Periplaneta americana were studied by light and electron microscopy. The view that the ocellus of the cockroach represents a degenerated structure can no longer be supported. All organelles necessary for function are present. The club-shaped retinular cells lie homogeneously distributed in the cupule of the ocellus. Rhabdoms are seen as sickle… (More)
DOI: 10.1007/BF00215878

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