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单词 cercus
释义

cercus

/ˈsəːkəs /
noun (plural cerci /ˈsəːkʌɪ/) Zoology
Either of a pair of small appendages at the end of the abdomen of some insects and other arthropods.They have no eyes, antennae, or caudal cerci but have a telson tail, which is common in crustaceans but absent in other hexapods....
  • By analogy with modern arthropods this zone was inferred to lie at the anterior of a terminal ventral body segment-the telosoma and the antenniform cerci of Olenoides serratus might be interpreted as belonging to that segment.
  • These species are notable for the plesiomorphic retention of venation (albeit already quite reduced) in their tegmina, segmented cerci, and pentamerous tarsi.

Origin

Early 19th century: from modern Latin, from Greek kerkos 'tail'.

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更新时间:2025/3/22 12:53:27