Simple eye in invertebrates - Wikipedia
Stemmata (singular stemma) are a class of simple eyes. Many kinds of holometabolous larvae bear no other form of eyes until they enter their final stage of growth. Adults of several orders of hexapods also have stemmata, and never develop compound eyes at all.
stemma, stemmata - BugGuide.Net
2009年5月7日 · stemma noun, plural stemmata - the simple eye of a certain larval insects, also called lateral ocelli, though they are not homologous with ocelli. They are found on the heads of the larvae of most holometabolus insects.
Photoreceptors – ENT 425 – General Entomology
Lateral ocelli (=stemmata) are the sole visual organs of holometabolous larvae and certain adults (e.g. Collembola, Zygentoma, Siphonaptera, and Strepsiptera). Stemmata always occur laterally on the head, and vary in number from one to six on each side.
Stemma Definition & Meaning - Merriam-Webster
2016年12月8日 · The meaning of STEMMA is a simple eye present in some insects.
Ocelli and Stemmata - ScienceDirect
2009年1月1日 · The second group of simple eyes, formerly termed “lateral ocelli” but now termed “stemmata” (singular stemma), is found in the larvae of Holometabola. Stemmata are innervated laterally from the optic lobes, and typically there is a group on each side of the head.
Escaping compound eye ancestry: the evolution of single …
2014年8月15日 · Larval eyes of holometabolous insects are derived from compound eyes, and are called stemmata. They also have been referred to as lateral ocelli, though they are distinctly different from the medial ocelli of adult insects. In most orders, only five to seven stemmata are present (Paulus, 1986), and many of them are quite simple visual organs.
ocellus, ocelli, (anocellate) - BugGuide.Net
2024年8月13日 · Common entomological usage (1) is to call these "lateral ocelli", but a more specific term is stemmata (singular stemma), since they are not homologous with ocelli (2). 2. An eye-like spot of color, consisting of annuli of different colors, enclosing a central spot or pupil, as present on the wings of some lepidoptera.
Anatomy of the stemmata in the Photuris firefly larva
2019年1月16日 · We investigated the structure of stemmata in Photuris firefly larvae to identify anatomical substrates (i.e., rhabdomeres) conferring visual function. Stemmata were located bilaterally on the antero-lateral surfaces of the head. Beneath the ~ 130 µm diameter lens, we identified a pigmented eye-cup.
Ocelli and Stemmata - ResearchGate
2009年12月31日 · The second group of simple eyes, formerly termed “lateral ocelli” but now termed “stemmata” (singular stemma), is found in the larvae of Holometabola. Stemmata are innervated laterally from the...
Escaping compound eye ancestry: the evolution of single
2014年8月15日 · Stemmata, the eyes of holometabolous insect larvae, have gained little attention, even though they exhibit remarkably different optical solutions, ranging from compound eyes with upright images, to sophisticated single-chamber eyes with inverted images.