Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

924Maggenti and Gardnertyloid n.; pl. tyloides [Gr. tylos, knob] (ARTHRO: Insecta) InTrigonalidae and Ichneumonidae, any large indented, flattenedor raised sensory area on the antennae.tylosis n.; pl. -es [Gr. tylos, knob] A hardening or thickening;a callous.tylostyle a. [Gr. tylos, knob; stylos, column] (PORIF) Amonactinal monaxon knobbed at the broad end and pointedat the other. see subtylostyle.tylote n. [Gr. tylos, knob] (PORIF) A diactional monaxon inwhich both broad ends are knobbed.tylus n.; pl. tyli [Gr. tylos, knob] (ARTHRO: Insecta) The distalpart of the clypeal region of the head.tymbal n. [F. timbale, kettledrum] (ARTHRO: Insecta) InHemiptera (Cicadidae), an area of thin cuticle supported bya cuticular rim and a series of dorso-ventral strengtheningribs; involved in sound production. see Pearman's organ.tympanal air chamber (ARTHRO: Insecta) An air-sac or space,usually posterior to the tympanal organ into which outsideair is admitted by a spiracle allowing the tympanum to vibratefreely.tympanal bullae see tympanal hoodtympanal fossa (ARTHRO: Insecta) In Diptera, a largely membranousarea between the suprasquamal ridge and thelower margin of the postalar wall.tympanal frame (ARTHRO: Insecta) The supporting frameworkof the tympanal membrane.tympanal hood (ARTHRO: Insecta) In some Lepidoptera, oneof a pair of tubercles or rounded prominences on the dorsalsurface at the base of the first abdominal segment.tympanal organs (ARTHRO: Insecta) Specialized chordotonalorgans that occur on prothoracic legs, mesothorax,metathorax, or abdomen; the auditory organ or eardrum.tympanal pockets (ARTHRO: Insecta) In Lepidoptera, pocketsin the tympanal frame, usually 4 in number.tympanal ridge (ARTHRO: Insecta) In some Diptera, a rib-likesclerite forked anteriorly, forming a single or double Y thatencloses the tympanic pit.