Comparative Ultrastructure of Antennal and Mouthpart Sensilla in Larval Instars of Amata bicincta (Kollar, [1844]) and Areas galactina (Hoeven, 1840) (Lepidoptera: Erebidae)
DOI:
https://doi.org/10.57065/shilap.1146Keywords:
Lepidoptera, Erebidae, Amata, Areas, larvae, ultrastructure, sensilla, SEM, taxonomy, IndiaAbstract
This study compares the ultrastructural development of antennal and mouthpart sensilla across larval instars of Amata bicincta (Kollar, [1840]) and Areas galactina (van der Hoeven, 1840) (Lepidoptera: Erebidae) using scanning electron microscopy (SEM). A. bicincta exhibits five larval instars, while A. galactina has eight. Key findings include species-specific sensilla reductions and modifications: A. bicincta loses antennal sensillum B3 after the first instar, and its spinneret transitions to a broad, leaf-like structure. A. galactina retains B5 in later stages but loses B3 entirely, and its spinneret becomes conical in the final instar. Additional variations include transient appearances and disappearances of galeal sensilla (MSB, LSB/CSB) in A. galactina. These results underscore the utility of larval ultrastructure in taxonomic and sensory ecology studies, as well as the importance of examining all larval stages.
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References
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