N either of a pair of sensory appendages that arise from the mouthparts of crustaceans and insects (甲壳纲动物和昆虫口器中伸出的)触须
The male palpus is simplified, having only a single central tegular process, probably the conductor.
雄蛛触肢简单，仅具一个中瓦状中突，可能是引导器。
The external morphology of sensilla on maxillary and labial palpus of Periplaneta fuliginosa(Serville) was observed with scanning electron microscope.
利用扫描电子显微镜观察了黑胸大蠊Periplanetafuliginosa（Serville）成虫下颚须和下唇须上的感器形态。
Sensillar diversity of maxillary palpus is similar to the labial palpus except for grooved basiconic sensilla, and that the number of sensillum is different.
比较研究发现下颚须和下唇须上感器类型除了带槽锥形感器以外基本相似，只是数量上有区别。
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