202 
Psyche 
[Vol. 88 
Fig. 2. Left: stridulatory area of male P. mystaceus on ectal edge of cymbium of left palpus, showing fan-shaped file (F), linear 
file (L), and plectrum (P), which is a branch of the tibial apophysis (T) (250X); Right: closeup of portion of file indicated by 
arrow (1300X). 
