Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology 459glands.hypopharynx n. [Gr. hypo, under; pharyngx, pharynx] 1. (AR-THRO: Chelicerata) The chitinous plate situated on the labiumin certain Acari. 2. (ARTHRO: Crustacea) The metastoma.3. (ARTHRO: Insecta) a. A median mouth-part structureanterior to the labium, usually associated with thesalivary glands by ducts. b. A tongue-like lobe that arisesfrom the mouth-cavity floor and serves as a sensory apparatusfor taste, variously modified for feeding in manygroups; ligua; glossa. hypopharyngeal a.hypophragm see operculumhypopi pl. hypopushypoplasia n. [Gr. hypo, under; plasis, a molding] Developmentaldeficiency of an organ system, organ, or tissue. hypoplastica.hypoplax n. [Gr. hypo, under; plax, plate] (MOLL) A long,narrow, calcareous ventral plate covering the gape betweenthe two valves on the ventral margin, joined to the valvesby a chitinous fold.hopopleural bristles (ARTHRO: Insecta) In Diptera, a row ofbristles, usually vertical, on the hypopleuron, above thehind coxae.hypopleurite n. [Gr. hypo, under; pleura, side] (ARTHRO: Insecta)The lower plate of a divided pleuron.hypopleuron n. [Gr. hypo, under; pleura, side] (ARTHRO: Insecta)1. The region below the metapleuron. 2. In Diptera,the lower part of the mesepimeron.hypoploid a. [Gr. hypo, under; aploos, onefold; eides, form]Cells or individuals with one or more chromosomes or segmentsdeleted. see hyperploid.hypopneustic see hemipneustichypopolyploid see hypoploidhypoptera, hypoptere see tegulahypoptygma n. [Gr. hypo, under; ptygma, anything folded](NEMATA) Anterior and posterior cuticular flaps of the cloacalopening in some males. see epiptygma.