黑胸大蠊下颚须和下唇须上感器扫描电镜观察

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。结果发现,在黑胸大蠊下颚须和下庸须末节顶端何感器密集区,尤其是下颚须第5节内侧顶端,有一狭长沟壑,内有大量的带槽锥形感器。通过重点观察感器密集区,发现主要有5~6种类型感器,分别为带槽锥形、毛形、刺形、钟形、齿状、针形感器,其中有些感器又可分为几种亚类型。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。

Observation on the maxillary palpus and labial palpus sensilla of Periplaneta fuliginosa with scanning electron microscope

The external morphology of sensilla on maxillary and labial palpus of Periplaneta fuliginosa(Serville) was observed with scanning electron microscope. The results showed that there were a sensillar fields on the apex of both maxillary and labial palpus, and especially on the inner apex of the former, there was a narrow sulcus with lots of grooved basiconic sensillum inside. Over five types of sensilla were observed in these sensillar fields, including grovved basiconic sensillum, trichoid sensillum, chaetic sensillum, campaniform sensillum, pectinate scales, and spine sensillum, moreover, some of them have subtypes. Sensillar diversity of maxillary palpus is similar to the labial palpus except for grooved basiconic sensilla, and that the number of sensillum is different.