leptoblast n. [Gr. leptos, thin; blastos, bud] (BRYO) A floato-blast that quickly germinates after release from the parent colony.
leptoderan a. [Gr. leptos, thin; deras, hide, leather] (NEMATA) With caudal alae restricted to two sides of the body and not surrounding or meeting posterior to the tail tip. see pelod-eran.
leptonema n. [Gr. leptos, thin; nema, thread] A chromatin thread or chromosome at leptotene stage of prophase I in meiosis; sometimes used as a synonym of leptotene stage. see leptotene.
leptopelagic a. [Gr. leptos, thin; pelagos, sea] Extremely fine living or non-living material floating in sea water.
leptophragmata n.pl. [Gr. leptos, thin; phragma, hedge, fence] (ARTHRO: Insecta) In cryptonephridial forms, specialized cells at points of attachment of Malpighian tubules to the rectal peritrophic membranes.
leptostraterate a. [Gr. leptos, thin; stratos, covered] (ECHI-NOD: Asteroidea) Having the ambulacral plates narrow and crowded together.
leptotene n. [Gr. leptos, thin; tainia, ribbon] Early stage of prophase I in meiosis with chromosomes appearing as fine threads, although made up of two chromatids which are not apparent until the pachytene stage. see leptonema, pachynema.
leptotrombicula n. [Gr. leptos, thin; It. tromba, trumpet] (ARTHRO: Chelicerata) The slender larva of the thrombiculid mite that transmits Tsutsugamushi disease, also known as Japanese flood fever or scrub typhus.
leptus n. [Gr. leptos, small] (ARTHRO: Chelicerata) In Acari, larval form of mites with 6 legs.
lerp n. [Native name, lit., sweet] (ARTHRO: Insecta) In australian jumping plantlice, a scale or test on leaves or small twigs under which sedentary nymphs of Spondyliaspinae shelter.
lesion n. [L. laedere, to injure] In plants or animals, a wound or injury causing circumscribed pathological change in tissues, including a change or loss of function.
lestobiosis n. [Gr. lestes, robber; biosis, manner of life] (ARTHRO: Insecta) In Hymenoptera, a type of symbiosis in which a group of 'thief ants' of small size nest in or near the chambers of termites and larger ants, eating their stored food, larvae, and pupae unnoticed by their benefactors. see cleptobiosis.
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