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galea n. [L. galea, helmet] 1. (ARTHRO: Chelicerata) A moveable process on the digit of the chelicera of pseudoscorpions, used to spin silken cocoons for protection during molting, hibernation, or the brooding of eggs. 2. (ARTHRO: Crustacea) Outer distal hoodlike lobe of the second segment of the maxillula. 3. (ARTHRO: Insecta) a. The outer lobe of the maxilla borne by the stipes; may be present or absent. b. Basis for coiled tongue in Lepidoptera.

galea palpiformis (ARTHRO: Insecta) The galea composed of cylindrical joints as distinguished from the lacinia.

gallery n.; pl. -leries [ML. galilaea, gallery] A passage or corridor made by an animal.

gallicola n. [L. galla, gall; colere, to inhabit] (ARTHRO: Insecta) Form of phylloxeran fundatrix that forms leaf galls.

gallicolae migrantes (ARTHRO: Insecta) Winged gall-making form of Phylloxeridae or Adelgidae that migrate to an intermediate host.

gallicolae nonmigrantes (ARTHRO: Insecta) Apterous Adelgidae that remain on the primary host and produce fundatrices parthenogenetically.

gallicolous a. [L. galla, gall; colere, to inhabit] Producers or inquilines dwelling in plant galls.

galliphagous a. [L. galla, gall; Gr. phagein, to eat] Feeding upon galls or gall tissue.

galvanotaxis n. [Luigi Galvani, pert. electricity; Gr. taxis, arrangement] A taxis in which an electric current is the directive factor.

galvanotropism n. [Luigi Galvani, pert. electricity; Gr. tropein, to turn] Tropism in which an electric current is the orienting factor; electrotropism.

gametangiogamy n. [Gr. gamete, wife; dim. angos, vessel] The union of gametangia.

gametangium n.; pl. -ia [Gr. gamete, wife; angos, vessel] A structure producing gametes.

gamete n. [Gr. gamete, wife] A cell that unites with another cell in sexual reproduction.

gametocyte n. [Gr. gamete, wife; kytos, container] 1. A spermatocyte or oocyte. 2. Sexual stage of the malarial parasite in the blood which upon being taken into the mosquito host may produce gametes. see microgametocyte, macrogametocyte.

gametogamy n. [Gr. gamete, wife; gamos, marriage] Union of two single celled gametes to form the zygote.

gametogenesis n [Gr. gamete, wife; genesis, beginning] Gamete formation by which oogonia become ova and spermatogonia become sperm; gametogeny; gonogenesis. see oogenesis; spermatogenesis.

gametogenetic generation A sexual generation as opposed to a parthenogenetic generation.

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