Table 1. Effect of peristome wetting on the trapping efficiency in N. bicalcarata.

	Peristome condition
Ant species	Natural (dry), visits/falls	Wetted, visits/falls	P
C. inflata	89/4	53/37	<0.001
Camponotus (Colobopsis) sp.	37/0	14/14	<0.001
O. smaragdina	18/0	21/21	<0.001
Polyrhachis cf. beccarii	26/0	12/10	<0.001

P values give Fisher's exact test statistics. Ants with all legs in peristome contact that passed the peristome center line were counted as peristome visits.