Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology 541median caudal nerve (NEMATA) A nerve extending from thedorsorectal ganglion to the tail.median cercus see urogomphusmedian cord (ARTHRO: Insecta) An embryonic chain of cellsderived from the ectoderm lining the neural groove.median dorsal plate (ARTHRO: Crustacea) In some Peracardia,an elongate plate separating carapace valves posterodorsally.median esophageal bulb see metacorpusmedian eye see nauplius eyemedian lamina see median wallmedian latus (ARTHRO: Crustacea) In Lepadomorpha, a platebetween the rostral and carinal latera in forms with pairedlatera in one whorl. see lateral.median ligament (ARTHRO: Insecta) A common thread formedby the ovarioles of opposite sides that help maintain theovaries in position and is attached to the body-wall, thefat-body or the pericardial diaphragm.median oviduct see common oviductmedian segment (ARTHRO: Insecta) The basal segment of theabdomen when it is fused with the metathorax during thechange from larva to pupa. see propodeum, epinotum.median tubuli (BRYO: Stenolaemata) Aligned pustules or murallacunae in a laminated skeleton.median valve see intermediate valvemedian wall (BRYO: Stenolaemata) Erect colony wall parallelto the growth direction from which zooids bud to form abifoliate colony.mediator n. [L. medius, middle] Association, internuncial,neuron; chemical such as a hormone that controls or modifiesa metabolic process.media worker (ARTHRO: Insecta) In Formicidae, an individualbelonging to the medium-size subcaste in a polymorphicseries of three or more worker subcastes. see minorworker, major worker.medio-cubital cross vein see medial-cubital cross vein