lateral hinge system (MOLL: Bivalvia) Hinges in some prodis-soconchs both anterior and posterior to the provinculum.
lateralia n. [L. latus, side] 1. (ARTHRO: Crustacea) Lateral plates, variable in number, of lepadomorphs and balano-morphs. 2. (GNATHO) Lateral paired sensory bristles on the head.
lateral line 1. (ANN: Oligochaeta) In aquatic forms, the line formed by the nuclei of the fibers of the circular muscles. 2. (ARTHRO: Insecta) In eruciform Trichoptera, finely haired, longitudinal cuticular fold on each side of the abdomen. see supraspiracular line. 3. (NEMATA) In some nematodes, lateral, longitudinal cuticular incisures beneath which the lateral nuclei of the hypodermis are found; lateral field lines. see lateral ridge.
lateral lips 1. (ARTHRO: Chelicerata) In Acari, lateroventral protuberances anterior to the mouth; joined to the labrum usually, and the labium when present. 2. (NEMATA) Lateral lobes of the hexaradiate labial region.
lateral longitudinal carina (ARTHRO: Insecta) In ichneumonid Hymenoptera, the longitudinal carina of the propodium on each side laying between the median and pleural carinae.
lateral mesentaries (CNID: Anthozoa) In Zoantharia, the mesentaries, excluding directive or dorsal and ventral pairs.
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