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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 811(mesoscutellum); large and usually triangular or subtriangular.c. In Diptera, a posterior rounded or triangular lobe.2. (NEMATA: Secernentea) One <strong>of</strong> a pair <strong>of</strong> large caudalchemosensory organs opening in the lateral fields in somespecies <strong>of</strong> the Hoplolaiminae.scutiform a. [L. scutum, shield; forma, shape] In the shape <strong>of</strong>a shield; peltate.scutigerous a. [L. scutum, shield; gerere, to bear] Having ashield-like structure.scutoscutellar suture (ARTHRO: Insecta) The sulcus dividingthe mesonotum into the scutum and scutellum; V <strong>of</strong> V-shaped sulcus with arms diverging posteriorly.scutulis see scutellumscutum n.; pl. scuta [L. scutum, shield] 1. Any long, horny orchitinous plate. 2. (ARTHRO: Chelicerata) In Acari, thelarge, anteriodorsal sclerite. 3. (ARTHRO: Crustacea) Inthoracic barnacles, a paired plate or valve. a. In Lepadomorpha,one on each side <strong>of</strong> the occludent margin <strong>of</strong> thecapitulum. b. In Verrucomorpha, a fixed scutum, one <strong>of</strong> 4principal plates, and a movable scutum, 1 <strong>of</strong> 2 opercularplates. c. In Balanomorpha, one <strong>of</strong> 4 opercular plates. 4.(ARTHRO: Insecta) The middle division <strong>of</strong> the thoracic notum,anterior to the scutellum. a. In Hymenoptera, themajor part <strong>of</strong> the dorsum <strong>of</strong> the mesothorax in wingedFormicidae. b. In Diptera, sometimes referred to as theeunotum. 5. (BRYO: Gymnolaemata) In anascanCheilostomata, a broad, flat, lateral, marginal spine overhangingthe frontal area.scyphistoma n. [Gr. scyphos, cup; stoma, mouth] (CNID) Ajellyfish polypoid larval stage attached to the bottom thatgives rise to free-swimming medusae; a strobila. see hydra-tuba.scyphomedusae see ScyphozoaScyphozoa, scyphozoans n.; n.pl. [Gr. scyphos, cup; zoon,animal] An exclusively marine class in the Phylum Cnidaria,in which the medusoid stage predominates having 8notches in the margin <strong>of</strong> the bell; jellyfishes.sealing bar (ARTHRO: Insecta) In eggs, a structure formed

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