Frontoclypeal sulcus or suture see epistomal suture

frontoclypeus n. [L. frons, forehead; clypeus, shield] (ARTHRO: Insecta) The line (sulcus or suture) between the combined clypeus and frons which is not externally visible. frontoclypeal a.

frontogenal suture (ARTHRO: Insecta) A more or less vertical suture on the front of the head, between the frons and the gena. see subantennal suture.

frontolateral horn (ARTHRO: Crustacea) In Cirripedia nauplii, a pair of tubular frontolateral extensions of cuticle.

fronto-orbital bristles (ARTHRO: Insecta) In Diptera, bristles on the front, next to the eyes.

froth glands (ARTHRO: Insecta) In nymphal Cercopidae, the modified Malpighian tubules.

frugivorous a. [L. frux, fruit; vorare, to devour] Feeding upon fruit.

fry n.; sing. & pl. [ME. fry, offspring] 1. Young or offspring. 2. The recently hatched brood of oysters.

fugacious a. [L. fugere, to flee] Having a tendency to disappear; not permanent; perishing early; lasting a short while. fugaciously adv.; fugaciousness n.

fulcral a. [L. fulcrum, support] Of or pertaining to a fulcrum.

fulcral plates (ARTHRO: Insecta) In aculeate Hymenoptera, see triangular plates; for Diptera see clypeal phragma.

fulcrant trochanter (ARTHRO: Insecta) A trochantin traversing the femur, but not intervening between it and the coxa.

fulcrate mastax (ROTIF) A mastax with an elongate fulcrum, having a pair of leaf-like manubria attached anteriorly.

fulcro-cranial muscle (ARTHRO: Insecta) 1. A muscle arising from the postoccipital phragma or ridge and inserted on the fulcrum in the thysanuran Lepismodes and mayfly nymphs. 2. In the blattoid Periplaneta and lower apterygotes, a muscle arising from each of the posterior tentorial arms.

fulcrum n.; pl. fulcrums [L. fulcrum, support] 1. Any structure that props or supports another. 2. (ARTHRO: Insecta) a. In Heteroptera, the trochantin. b. In lower hemime-tabolous insects, a sclerotized fulcrum formed by two ligual sclerites joined proximally on the ventral surface of the hy-popharynx. c. In Diptera and Hymenoptera, the horny part of the lingula. 3. (MOLL: Bivalvia) That portion to which the cartilage is attached; chondrophore. 4. (ROTIF) The unpaired trophus of the mastax.

fulgid a. [L. fulgidus, shining] Appearing red with bright metallic reflections.

fulguration n. [L. fulgurare, to flash] The act of flashing as lightning; to emit flashes.

fuliginous a. [LL. fuligo, soot] Of or pertaining to soot or smoke; having the color of soot; dark colored, sooty opaque brown.

fultella n. [L. dim. fultura, prop] (ARTHRO: Insecta) In Diptera, the aedeagal apodeme of male Tephritidae possessing a pair of lateral processes extending to the hypandrium.

fultelliform a. [L. dim. fultura, prop; forma, shape] (ARTHRO: Insecta) Having the fultella at least partially fused with the median internal surface of the hypandrium.

fultura n.; pl. -ae [L. fultura, prop] (ARTHRO: Insecta) In male Lepidoptera, a rectangular sclerite (paired) extending into the abdomen from sternite 9. see suspensorium.

fulturae of hypopharynx (ARTHRO: Chilopoda) Two ventral plates posteriorly attached to the margin of the cranium, and mesally extended forward as a tapering arm against the side of the hypopharynx; hypopharyngeal supports.

fultura inferior (ARTHRO: Insecta) In male Lepidoptera, scle-rotized structures situated on the ventral diaphragm, including the ventral part of the anellus and juxta.

fultura penis (ARTHRO: Insecta) In male Lepidoptera, the sclerotized structures of the diaphragm, namely, the fultura inferior and the fultura superior.

fultura superior (ARTHRO: Insecta) In male Lepidoptera, sclerotized structures situated on the dorsal part of the diaphragm, including the dorsal part of the anellus and transtilla.

fulvous a. [L. fulvus, tawny yellow] Having low saturation and median brilliance; orange, reddish yellow, tawny, rust color or reddish brown.

function v. [L. functio, perform] The activity or action of any part of an organism. functional a.

functional haplometrosis (ARTHRO: Insecta) A colony in which an initial pleometrotic association of females undergoes a change, resulting in a haplometrotic society of the original females, presided over by one of them; functional monogyny. see permanent haplometrosis, temporary haplometrosis.

fundament n. [L. fundamentum, foundation] The primordium.

fundatrigenia n. [L. fundare, to found; Gr. genos, descent] (ARTHRO: Insecta) In Homoptera, the wingless, viviparous parthenogenetic Aphidae and Phylloxeridae females, the offspring of a fundatrix, that lives on the primary host.

fundatrix n.; pl. -trices [L. fundare, to found] (ARTHRO: Insecta) The wingless, viviparous, parthenogenetic female Aphidae, Phylloxeridae and Adelgidae that hatches from overwintered eggs and founds a new colony. see fundatri-genia, alienicola, migrante, gallicola.

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