Distribution of sensory sensilla in the labral food canal and cibarium of Chrysops exitans (Diptera: Tabanidae).
DOI:
https://doi.org/10.55632/pwvas.v89i3.308Keywords:
Chrysops exitans, cibarium, food canal, sensilla, deer fliesAbstract
Sensilla, beginning at the distal-most tip of the labrum and extending proximally through the cibarium to the stomodaeum, were examined in females of Chrysops exitans Walker. Totals of 328 setiform sensilla (range, 14 to 21; mean = 18.2; ±1 SD = 1.67), and 36 basiconic sensilla (mean = 2.0; ±1 SD = 0) were observed in the food canal of n = 18 sample individuals. Both types of sensilla were aggregated distally in the canal. Additionally, a group of five to 10 sensilla was observed in each lateral wall of the epipharynx, with a single median group, consisting of both setiform and basiconic sensilla, positioned immediately distal to the mouth opening into the cibarium. Two pairs of basiconic sensilla were consistently observed in the stomodaeum of every fly.References
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