Blatchley Fig. 358 (1)
. A useful illustration showing that the larvae in this family have only four functional legs.
c. beetle (adult, i.e., imago
d, hind leg of larva, showing atrophied joints;
e, same, enlarged.
Blatchley does not mention this, but the diagram (e) shows the toothed structure on the reduced hind leg. This is used to stridulate
with a corresponding structure on the middle leg. Looking at the termniology, I guess the plectrum
(pick) would be on the middle leg and this comb-like structure on the hind leg would be the pars stridens
. If anyone knows better, please leave a comment!