Mereopodite see merus

meridional canal (CTENO) One of the eight canals extending in an oral-aboral direction under the external surface; part of the gastrovascular system; in Pleurobranchia it emits a greenish-blue luminescence.

meristal annuli (ARTHRO: Insecta) In Orthoptera and Odonata, annuli derived from, and adjacent to, the meriston that di vides.

meriston n. [L. merizein, to divide] (ARTHRO: Insecta) The most basal annulus of the antennal flagellum.

meritrichy a. [Gr. meros, part; trichos, hair] (ARTHRO: Cheli-cerata) In Acari, chaetotaxy characterized by a reduction in number and size of setae from the holotrichous form.

mermithaner n. [Gr. mermis, cord; aner, male] (ARTHRO: Insecta) Male Formicidae parasitized by the nematode Mer-mis; a mermithophore.

mermithergate n. [Gr. mermis, cord; ergates, worker] (ARTHRO: Insecta) In Formicidae, a worker parasitized by the nematode Mermis; a mermithophore.

mermithized a. [Gr. mermis, cord] (NEMATA) Pertaining to parasitism by nematodes of the genus Mermis.

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