单词	notum
释义	notum /ˈnəʊtəm / noun (plural nota) Entomology (In an insect) the tergum or dorsal exoskeleton of the thorax.Of the three regions of adult cuticle scored for ectopic bristles, the dorsal notum had the largest number, so data from that region are likely to be most reliable.... The notum is well-developed, but it is impossible to tell if the eyes are large or meet medially. These mutant pupae have defects including shortened or bent legs, bristle defects, a split notum, and wing abnormalities. Derivatives notal adjective ... Crosses to assess developmental delay, dominant effects on wing size, and notal bristle phenotypes were set up in vials and then transferred to egg-laying cages for 2-hr laying periods. The male scorpion fly possesses what is called a notal organ, a clamp behind its wings. Origin Late 19th century: from Greek nōton 'back'.
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