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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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308Maggenti and GardnerD-shaped larval stage (MOLL) A larva in the form <strong>of</strong> a D, theback <strong>of</strong> which is the long, straight hinge; protostracum.duct n. [L. ductare, to lead] 1. The tubular outlet <strong>of</strong> a gland forexternal secretion. 2. Any tube that conveys fluids or othersubstances.ductule n. [L. dim. ductare, to lead] A small duct, or the beginningportion <strong>of</strong> a duct.ductus n. [L. ductare, to lead] A duct.ductus bursae (ARTHRO: Insecta) A tube in female Lepidopteraconnecting the ostium with the bursa copulatrix.ductus ejaculatorius The median ectodermal exit tube <strong>of</strong> themale genital system.ductus entericus (NEMATA) A duct between osmium anduvette in the demanian system.ductus obturatus (ARTHRO: Insecta) In Siphonaptera, aprimitive genital character <strong>of</strong> certain females that functionsas a spermathecal duct.ductus uterinus (NEMATA) A duct between the uterus and thedemanian system.Dufour's gland (ARTHRO: Insecta) In Hymenoptera, an abdominalgland <strong>of</strong> the sting apparatus that supposedly secretsa liquid which when applied to cell walls, forms a thin,cellophane-like, transparent, or waxy lining which mayfunction as a chemical cue for nesting, maintaining humiditycontrol, a defense against microbial infection and/orfood source.dulosis n. [Gr. doulosis, servitude] (ARTHRO: Insecta) Ant slaveryin which a parasitic ant species raids the nests <strong>of</strong> anotherspecies to capture brood (usually pupae) to rear asenslaved nestmates.duodecathecal a. [L. duodecim, twelve; Gr. theke, case](ANN: Polychaeta) Pertaining to having 12 spermathecae,usually in 6 pairs.duodenum n. [ML. duodenum, the first part <strong>of</strong> the small intestine]The anterior intestine.dupion n. [F. doupion, double] (ARTHRO: Insecta) In Lepidoptera,a double cocoon spun by two silkworms; the silk from

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