Table 1.

Behaviour of guards towards nestmate and non-nestmate workers

	Behaviour	Nestmate (n = 55)	Non-nestmate (n = 56)	df	F	P
Duration (s)	Antennation	3.48 ± 0.36	4.58 ± 0.43	1. 108	4.21	0.042
	Self-grooming	23.4 ± 3.18	34.2 ± 4.74	1. 108	3.69	0.057
Occurrence	Antennation	3.96 ± 0.35	4.79 ± 0.31	1. 108	4.15	0.044
	Self-grooming	7.22 ± 0.78	8.98 ± 0.72	1.108	3.65	0.062

Results are presented as mean ± SE.