Cephalogryllus sp. probably tau Otte & Alexander is commonly heard around Kuranda. Further study is needed to establish its correct identity since a series of different-looking males have been dug from burrows in Kuranda.
This is a large cricket, some 25-27 mm in body length with very sturdy hind legs that are probably used in shaping the burrow. The wings are short and used solely in sound production; the crickets cannot fly. These crickets live in the ground and males sing from the entrance to their burrows on wet nights from February until August. There are many males per unit area in the rainforest but their calls are not synchronised. As a result the background is a continuous din of cricket calls. The ambient "din" can be heard in the recording presented here. The tape recorder was positioned about 16 cm from the entrance to the burrow.
Calling ceases at some stage late in the evening, probably as a result of decreasing ambient temperatures. Females have not been found wandering around after dark as one might expect. The purpose of the calling song supposedly is to attract females for mating. Perhaps, these crickets sing for other reasons, such as territoriality. By morning, the burrows are closed and the occupants remain underground during the day.