Sensilla campaniformia
Sensilla campaniformia (SCa) are more common on the labial palpus and
mandibular palpus of insects of the family Araneae and are named after
their bell-shaped appearance. The sensor consists of a broad basal fossa
and a rounded, blunt projection with a smooth epidermal wall and is
found mainly on the terminal segments of the labial palpus and
mandibular palpus of adults.
There is clear male and female dimorphism in the morphological
characteristics of the insect. The basal width of the SCa was
significantly greater in females than in males (Table 4), and the number
of SCa (♀ = 29.40 ± 2.52, ♂ = 19.20 ± 1.07, t = 3.73, P< 0.05) was significantly greater in females than in males
(Fig. 3).