Colony;"Head length to end of nasus";"Head width (max.)";"Pronotal width";"Hind tibia length" "GUA222 (n=12)";1.36–1.45;0.70–0.78;0.36–0.40;0.65–0.70 "MX148 (n=2)";1.28–1.29;0.66;0.36;0.58 "MX152 (n=12)";1.34–1.42;0.68–0.74;0.34–0.40;0.64–0.70 "MX161 (n=12)";1.36–1.46;0.74–0.78;0.38–0.44;0.66–0.74 "MX281 (n=12)";1.38–1.45;0.72–0.78;0.34–0.39;0.64–0.76 "MX492 (n=12)";1.32–1.42;0.72–0.78;0.34–0.38;0.64–0.70 Range;1.28–1.46;0.66–0.78;0.34–0.44;0.58–0.76 Mean;1.38;0.72;0.37;0.67