Boldness Trials 

Trials took place in a 15 cm wide plexiglas arena in a sound-reduced room. A D9 male or female cricket was carefully coaxed into an opaque container (burrow) made from a film canister. The burrow was then placed in the center of the arena. An incandescent light source was placed perpendicularly to the left of the arena and was the only light source in the room (Fig. 3). 

An opaque barrier was placed in front of the burrow at the start of each trial (Fig. 4).  After a 2 min acclimation period, the barrier was lifted.  Crickets that fully exited the burrow within 3 min and remained outside for more than 2.5 min, were scored bold. Crickets that took over 7 min to exit, or never exited, were scored timid. All others were scored as medial.