Chines Journal of Vector Biology and Control ›› 2013, Vol. 24 ›› Issue (6): 491-493.DOI: 10.11853/j.issn.1003.4692.2013.06.004

• Original reports • Previous Articles     Next Articles

Scanning electron microscope observation of cephalic segments of second-instar larvae of Lucilia sericata (Meigen) (Diptera:Calliphoridae) and discovery of a new sensillum

CHEN Yi-ou, LI Kai, ZHANG Dong   

  1. College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China
  • Received:2013-07-11 Online:2013-12-20 Published:2013-12-20
  • Supported by:

    Supported by the Program for National Science Fund for Fostering Talents in Basic Research (No. NSFC-J1210075) and New Century Excellent Talents in University (No. NCET-12-0783)

丝光绿蝇2龄幼虫头节扫描电镜观察及一种新型感受器的发现(双翅目:丽蝇科)

陈一欧, 李凯, 张东   

  1. 北京林业大学生物科学与技术学院, 北京 100083
  • 通讯作者: 张东,Email:ernest8445@163.com
  • 作者简介:陈一欧(1992-),女,在读本科,从事昆虫形态研究。Email:cyo1992@hotmail.com
  • 基金资助:

    国家基础科学人才培养基金“能力提高项目(野外实践)”(NSFC-J1210075);教育部新世纪优秀人才支持计划(NCET-12-0783)

Abstract:

Objective To observe the sensilla on the cephalic segments of the second-instar larvae of Lucilia sericata (Meigen) by scanning electron microscopy (SEM) and to provide new morphological information and screen out the characteristic for species identification. Methods From June to August 2012, adult females of L. sericata were collected in the Songshan National Nature Reserve in Beijing and the campus of Beijing Forestry University and was then reared in the laboratory to obtain larval specimens. The sensilla on the cephalic segments of larvae were observed by SEM. Results The cephalic segment bore an antenno-maxillary sensory complex formed by the antenna (a big coeloconic sensillum), three big coeloconic sensilla, three basiconic sensilla, and six small coeloconic sensilla on the inner surface of maxillary palp, and two big coeloconic sensilla on the outer surface of maxillary palp. A pair of pit sensilla were observed on the oral groove, and each labial organ was equipped with a big coeloconic sensillum and a pit sensillum. Conclusion The new morphological characteristics of the larvae of Calliphoridae, such as the pit sensillum on labial organ and the small coeloconic sensilla on maxillary palp, are discovered. The small coeloconic sensilla can be used as a morphological characteristic for identification of the second-instar larvae of L. sericata.

Key words: Lucilia sericata, Second-instar larva, Sensillum

摘要:

目的 对丝光绿蝇2龄幼虫头节感受器进行扫描电镜观察,补充新的形态学信息并筛选出便于物种鉴定的特征。方法 2012年6-8月于北京松山国家级保护区和北京林业大学校园采集雌性丝光绿蝇,实验室饲养获得幼虫标本,扫描电镜观察头节感受器形态。结果 幼虫头节触角为1个大腔锥形感受器,下颚须内围分布3个锥形、3个大腔锥形及6个小腔锥形3种不同类型的感受器,外围分布2个大腔锥形感受器。口沟基部具1对坑状感受器,下唇两侧附属器官均具1个大腔锥形感受器和1个坑状感受器。结论 观察到丽蝇科幼虫新的形态学特征:下颚须的小腔锥形感受器和下唇器官的坑状感受器,其中小腔锥形感受器可作为丝光绿蝇2龄幼虫的鉴别特征。

关键词: 丝光绿蝇, 2龄幼虫, 感受器

CLC Number: