请输入您要查询的字词:

 

单词 Protura
释义
Protura

Biology
  • An order of tiny wingless insects that live in soil and leaf litter. There are about 800 known species. The slender elongate adults are usually 0.5 to 2.5 mm long and lack eyes and antennae; the front pair of legs are held forwards as sensors. The mouthparts, which are largely entognathous (concealed within folds), are adapted for feeding on decaying organic matter. The young resemble the adults, but three segments are added to the end of the abdomen during development. The relationship of proturans to other arthropod groups is controversial. Although some authorities place them in the subclass Apterygota with the other wingless insects, other authors regard the Protura as a separate class within the superclass Hexapoda, most closely affiliated to the Collembola.


随便看

 

科学参考收录了60776条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。

 

Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号 更新时间:2024/12/25 15:43:01