Scutulis see scutellum

scutum n.; pl. scuta [L. scutum, shield] 1. Any long, horny or chitinous plate. 2. (ARTHRO: Chelicerata) In Acari, the large, anteriodorsal sclerite. 3. (ARTHRO: Crustacea) In thoracic barnacles, a paired plate or valve. a. In Lepado-morpha, one on each side of the occludent margin of the capitulum. b. In Verrucomorpha, a fixed scutum, one of 4 principal plates, and a movable scutum, 1 of 2 opercular plates. c. In Balanomorpha, one of 4 opercular plates. 4. (ARTHRO: Insecta) The middle division of the thoracic no-tum, anterior to the scutellum. a. In Hymenoptera, the major part of the dorsum of the mesothorax in winged Formicidae. b. In Diptera, sometimes referred to as the eunotum. 5. (BRYO: Gymnolaemata) In anascan Cheilostomata, a broad, flat, lateral, marginal spine overhanging the frontal area.

scyphistoma n. [Gr. scyphos, cup; stoma, mouth] (CNID) A jellyfish polypoid larval stage attached to the bottom that gives rise to free-swimming medusae; a strobila. see hydra-tuba.

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