Ultrastructure of the antennal sensillae of male and female peach fruit fly, Bactrocera zonata.
Bottom Line: This study focused on the sensillae found on the antennal segments (scape, pedicel, and flagellum or funiculus that bears the arista) of B. zonata.Numerous microtrichia as well as trichoid (I, II), basiconic, clavate, and coeloconic sensillae were observed on the funiculus.The sensillae found on the funiculus, such as trichoid and basiconic sensillae, were significantly larger in females.
Affiliation: Zoology Department, Faculty of Science, Assiut University, Egypt firstname.lastname@example.org.Show MeSH
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Mentions: C) The funiculus (third antennal segment): The funiculus is the most important antennal segment. It is an elongate and un-segmented flagellum. A large protruding arista extends from the superior edge of the outer surface of the funiculus. The third antennal segment of females (∼576.92 µm) tended to be larger than that of males (∼553.84 µm). Numerous sensilla were found. It is densely covered with microtrichia, which gradually diminished in density from the base to the tip. Four major types of sensilla (trichoid, basiconica, clavate and coeloconica sensillae) were observed on the flagellum (funiculus) of male and female B. zonata. All sensillae were oriented in a direction to the tip of antenna, giving the flagellum a velvety appearance. The funicular sensilla observed in males was greater than in females (Table 4, Figure 4A, B).
Affiliation: Zoology Department, Faculty of Science, Assiut University, Egypt email@example.com.