Table 5. Mean of morphometric ratios calculated based on worker individuals.

	algerianus (n = 44)	bernardi (n = 10)	gordiagini (n = 1)	kraussei (n = 70)	microcellatus (n = 51)	ravouxi (n = 174)	stumperi (n = 35)
CS	598±21.265	564±15.214	579	599±19.488	590±20.033	614±26.021	582±16.108
	[548, 639]	[545, 587]		[561, 650]	[546, 654]	[551, 665]	[551, 618]
CL/CWb	1.232±0.019	1.243±0.023	1.162	1.268±0.022	1.192±0.020	1.232±0.027	1.143±0.020
	[1.180, 1.263]	[1.199, 1.270		[1.220, 1.319]	[1.144, 1.230]	[1.155, 1.323]	[1.110, 1.188]
POC/CL	0.372±0.010	0.368±0.017	0.372	0.354±0.009	0.369±0.019	0.368±0.010	0.358±0.013
	[0.352, 0.398]	[0.344, 0.406]		[0.330, 0.371]	[0.348, 0.493]	[0.342, 0.407]	[0.335, 0.395]
SL/CL	0.702±0.015	0.714±0.031	0.723	0.706±0.018	0.734±0.018	0.672±0.022	0.703±0.030
	[0.668, 0.727]	[0.677, 0.781]		[0.670, 0.748]	[0.699, 0.783]	[0.613, 0.733]	[0.561, 0.747]
FR/CS	0.356±0.013	0.362±0.009	0.420	0.337±0.009	0.361±0.008	0.362±0.014	0.336±0.012
	[0.325, 0.383]	[0.344, 0.378]		[0.316, 0.362]	[0.337, 0.374]	[0.328, 0.406]	[0.313, 0.364]
MW/CS	0.661±0.021	0.684±0.021	0.695	0.623±0.016	0.663±0.012	0.672±0.022	0.706±0.017
	[0.629, 0.734]	[0.666, 0.727]		[0.592, 0.671]	[0.642, 0.705]	[0.619, 0.731]	[0.663, 0.735]
SPBA/CS	0.355±0.013	0.348±0.018	0.302	0.348±0.017	0.312±0.016	0.356±0.021	0.314±0.015
	[0.335, 0.405]	[0.313, 0.377]		[0.311, 0.407]	[0.285, 0.369]	[0.296, 0.405]	[0.279, 0.345]
SPWI/CS	0.367±0.016	0.387±0.015	0.290	0.381±0.025	0.328±0.015	0.378±0.026	0.332±0.021
	[0.342, 0.416]	[0.363, 0.411]		[0.326, 0.440]	[0.296, 0.373]	[0.309, 0.459]	[0.291, 0.389]
SPTI/CS	0.349±0.017	0.360±0.017	0.258	0.365±0.024	0.308±0.016	0.357±0.027	0.303±0.020
	[0.322, 0.393]	[0.329, 0.388]		[0.313, 0.427]	[0.277, 0.354]	[0.278, 0.435]	[0.261, 0.355]
PEW/CS	0.295±0.015	0.328±0.025	0.291	0.285±0.018	0.287±0.012	0.313±0.017	0.279±0.009
	[0.274, 0.349]	[0.266, 0.356]		[0.258, 0.355]	[0.264, 0.314]	[0.268, 0.356]	[0.254, 0.292]
PPW/CS	0.423±0.020	0.497±0.016	0.442	0.437±0.020	0.438±0.016	0.456±0.021	0.438±0.014
	[0.388, 0.496]	[0.468, 0.517]		[0.398, 0.500]	[0.405, 0.474]	[0.410, 0.517]	[0.405, 0.470]
ML/CS	1.232±0.030	1.252±0.033	1.292	1.210±0.034	1.251±0.026	1.274±0.037	1.273±0.022
	[1.171, 1.338]	[1.212, 1.330]		[1.154, 1.323]	[1.203, 1.300]	[1.160, 1.370]	[1.224, 1.315]
SPST/CS	0.225±0.013	0.239±0.013	0.280	0.256±0.018	0.227±0.014	0.262±0.021	0.244±0.014
	[0.200, 0.253]	[0.220, 0.260]		[0.210, 0.301]	[0.190, 0.266]	[0.215, 0.316]	[0.219, 0.268]
PLST/CS	0.362±0.013	0.367±0.021	0.411	0.355±0.019	0.392±0.015	0.376±0.019	0.372±0.015
	[0.332, 0.385]	[0.346, 0.423]		[0.321, 0.416]	[0.363, 0.422]	[0.310, 0.441]	[0.340, 0.411]
PEH/CS	0.574±0.019	0.609±0.028	0.560	0.571±0.025	0.570±0.017	0.621±0.031	0.594±0.015
	[0.531, 0.639]	[0.563, 0.668]		[0.524, 0.651]	[0.534, 0.603]	[0.547, 0.751]	[0.572, 0.623]
SPH/CS	0.268±0.013	0.295±0.019	0.280	0.285±0.016	0.317±0.029	0.306±0.021	0.291±0.017
	[0.247, 0.311]	[0.266, 0.331]		[0.257, 0.337]	[0.278, 0.379]	[0.254, 0.359]	[0.260, 0.331]
PPH/CS	0.468±0.014	0.500±0.027	0.458	0.465±0.018	0.419±0.014	0.487±0.021	0.465±0.015
	[0.439, 0.499]	[0.444, 0.533]		[0.427, 0.531]	[0.395, 0.458]	[0.426, 0.543]	[0.435, 0.514]
EYE/CS	0.244±0.008	0.258±0.021	0.265	0.236±0.008	0.258±0.010	0.250±0.009	0.253±0.010
	[0.230, 0.262]	[0.200, 0.272]		[0.217, 0.250]	[0.237, 0.283]	[0.226, 0.280]	[0.229, 0.275]

Morphometric traits are divided by cephalic size (CWb), ±SD are provided in the upper row, minimum and maximum values are given in parentheses in the lower row.