Last principal sound (a "lisp"). This may be a single syllable with the pulses corresponding to toothstrikes (but see the expansion of a lisp of the closely related I. walkeri).
Last principal sound (a "lisp"). This may
be a single syllable with
the pulses corresponding to toothstrikes (but see the expansion
of a lisp of
the closely related I. walkeri).
First principal sound. Perhaps the wings were moved much as for the other two
lisps but with most teeth missed.