CHAMBERS SIZE OF LARVAE (CM), Y HEAD DIAMETER (CM), X 1 2.274 333 1 2.765 624 1 2.912 1102 1 2.831 1352 1 2.859 1643 2 2.081 333 2 2.726 624 2 2.869 1102 2 2.881 1352 2 2.814 1643 3 2.129 397 3 2.725 744 3 2.823 1314 3 2.875 1609 3 2.921 1950 4 2.533 397 4 2.823 744 4 2.921 1314 4 2.873 1609 4 2.903 1950 5 2.281 461 5 2.669 864 5 2.730 1526 5 2.818 1871 5 2.767 2274 6 2.133 461 6 2.577 864 6 2.692 1526 6 2.832 1871 6 2.769 2274 7 2.056 295 7 2.617 558 7 2.780 831 7 2.793 1070 7 2.871 1362 8 1.407 237 8 2.148 444 8 2.570 784 8 2.661 962 8 2.757 1169 9 1.352 109 9 1.603 204 9 1.929 360 9 2.103 442 9 2.180 537