epimeral fold (ARTHRO: Crustacea) In Decapoda, the folded endopleurites connected to the branchiostegite that forms the branchial chamber.
epimeral parapterum (ARTHRO: Insecta) The posterior ba-salar sclerite between the pleural wing process and the epimeron of the wing bearing segment.
epimeral suture (ARTHRO: Insecta) The caudal portion of the sternopleural suture.
epimere n. [Gr. epi, upon; meros, part] 1. (ARTHRO: Crustacea) A dorsolateral, flat overhanging keel on the somites which may form a carapace, flattened shield or clam-shell valves. 2. (ARTHRO: Insecta) In Lepidoptera, a dorsal process of the phallobase.
epimeron n.; pl. -ra [Gr. epi, upon; meros, part] 1. (ARTHRO) In Arachnida and Diplopoda, a ventral plate to which the basal segment of the leg is attached; a coxal plate. 2. (ARTHRO: Crustacea) See epimere. 3. (ARTHRO: Insecta) That portion of a thoracic pleuron posterior to the pleural suture; for Diptera, see mesepimeron.
epimorphosis n. [Gr. epi, upon; morphosis, form] 1. With the same form in successive stages of growth. see anamorphosis, metamorphosis. 2. Larval forms which are suppressed or passed before hatching, emerging as the adult body form. 3. (ANN: Oligochaeta) A type of regeneration that results in the addition of new tissues and/or parts at the level of amputation. epimorphic a., epimorpha n.
epineural canal (echinod) A canal or sinus between each radial nerve and the epidermis.
epineural sinus (ARTHRO: Insecta) In embryology, the development of primary body cavity between the upper surface of the embryo and the yolk.
epineurium n. [Gr. epi, upon; neuron, nerve] 1. Outermost connective tissue sheath on the nerve. 2. (ARTHRO: Insecta) The fibrous connecting tissue that invests a nerve ganglion.
epinotal spines (ARTHRO: Insecta) In Formicoidea, the spines on the first abdominal segment that protect the pedicel.
epinotum n. [Gr. epi, upon; notos, back] (ARTHRO: Insecta) In Formicoidea, the thoracic dorsum posterior to the mesonotum, consisting of the metanotum and propodeum. see propodeum.
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