Organ of Bellonci frontal organ

frontal fissure (ARTHRO: Insecta) In Diptera, the line extending from the crescent-shaped sclerite above the antennae to the border of the mouth.

frontal ganglion (ARTHRO: Insecta) The median ganglion above the esophagus, in front of the brain, connected by nerves to the tritocerebral lobe on either side.

frontal gland (ARTHRO: Insecta) In Isoptera, a large median gland beneath the integument of the head in certain soldier-termites, opening through the fontanelle or frontal pore, which produces secretions.

frontalia n. [L. frons, front] 1. (ARTHRO: Insecta) For Diptera, see frontal vitta. 2. (GNATHO) Paired sensory bristles on the anterior part of the head.

frontal lobes (ARTHRO: Insecta) 1. In Psyllidae, two lobes or protrusions divided by a suture in which an ocellus is situated. 2. In Formicoidea, lateral projection of the frontal carina.

frontal lunule (ARTHRO: Insecta) In Diptera, the lunar-shaped sclerite above the base of the antennae and below the frontal suture.

frontal membrane (BRYO: Gymnolaemata) In Cheilostomata, membrane of the frontal wall in autozooids.

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