subprimary seta

例句：

1. 1. The hair on the back of his neck has a distinct subprimary seta pattern.
   他后颈的头发有清晰的次级小刺模式。
2. 2.During the mating season, male insects have specialized structures to attract females with their subprimary setae.
   在交配季节，雄性昆虫有特殊的结构，用它们的次级小刺来吸引雌性。
3. 3. Researchers found that the distribution of these setae is crucial for understanding the behavior of certain species of beetles.
   研究人员发现，这些小刺的分布对于理解某些甲虫的行为至关重要。