Journal
JOURNAL OF MORPHOLOGY
Volume 280, Issue 5, Pages 701-711Publisher
WILEY
DOI: 10.1002/jmor.20976
Keywords
chewing mouthpart; fine morphology; sensilla
Categories
Funding
- Gansu Agricultural University [2017RCZX-08, 2017RCZX-09]
- Special Funds for Discipline Construction of Gansu Agricultural University [GAU-XKJS-2018-157]
- National Natural Science Foundation of China [31660522]
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The lady beetle Coccinella transversoguttata is an important biocontrol agent of aphids. As the main the feeding apparatus, mouthparts play essential roles in feeding process, and the morphological variation of mouthparts is correlated with variation in food source and feeding behavior. To better understand the feeding behavior of C. transversoguttata, we studied the functional morphology of mouthparts, with special attention to the fine morphology of each part of mouthpart and various kinds of sensilla. The mouthpart of C. transversoguttata is typical mandibulate type that composed of labrum, mandible, maxillae, labium, and hypopharynx. Detailed descriptions were given about the fine morphology of each part, and various types of sensilla were identified and classified. In total, two types of sensilla chaetica, four types of sensilla basiconica, two types of sensilla styloconica, two types of sensilla placodea, and one type of cuticular pore were identified according to their length, morphology and distribution. Specially, the putative function of each part of mouthpart as well as each kind of sensilla and their coordinative mechanisms in feeding process were discussed. These results would lay a solid foundation for understanding the feeding mechanism of lady beetles.
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