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Tetraneura (Tetraneura) ulmicema Zhang & Guangxue 1997

visual system

Bitsch 2005
ocelli
URI: http://purl.obolibrary.org/obo/BTO_0001758

Definition: small simple eyes, found in many invertebrates, usually consisting of a few sensory cells and a single lens

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Bitsch 2005
compound eyes
URI: http://purl.obolibrary.org/obo/UBERON_0000018

Definition: A light sensing organ composed of multiple ommatidia, visual units consisting of a limited number of rhabdomeric photoreceptor cells, cornea-secreting epithelial cells, interommatidial pigment cells, and sometimes crystalline cone cells

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