Lanista annulicornis
Behaviour:
The call of L. annulicornis consists a series of short, two-impulse echemes (echeme duration 0.089–0.154 s; n=9), with peak frequency at 7.8 kHz, thus easily perceived by the human ear. Males also produce loud defensive stridulation if captured, similar in its characteristics to the advertisement call (Figs. 46J–L). [1]