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Table 3 Discriminant morphometric variables between queens and workers in Metapolybia docilis based on discriminant function analyses using the stepwise procedure and classification results for group comparisons through discriminant analysis. Original data are based on mm.

From: Shape differences rather than size differences between castes in the Neotropical swarm-founding wasp Metapolybia docilis (Hymenoptera: Vespidae, Epiponini)

Colony Phase Variable Step Wilks Lambda F p Observed classification Predicted classification   Percent correct
Pre-emergence T2H* 1 0.80 10.17 <0.001 Worker 61 3 95.31
  HW* 2 0.75 5.70 0.02 Queen 3 6 66.67
  PL 3 0.70 3.50 0.07 Total 64 9 91.7
  T2BW 4 0.69 3.53 0.06     
  T1L 5 0.66 2.88 0.09     
  MTL 6 0.67 2.70 0.10     
  IDm   0.66 2.98 0.09     
  HL   0.64 1.20 0.28     
  HL   0.64 1.20 0.28     
  AL   0.64 1.16 0.29     
Worker-production T2H* 1 0.80 57.00 <0.001   Worker Queen  
  HW* 2 0.75 6.25 0.02 Worker 29 1 96.7
  HL 3 0.70 3.61 0.06 Queen 3 20 86.96
  MTL 4 0.69 3.03 0.09 Total 32 21 92.45
  IDX 5 0.66 1.71 0.20     
  T1L 6 0.67 2.40 0.13     
Male-production          
  PW* 1 0.75 32.34 <0.001 Worker 30 0 100
  T1L* 2 0.29 9.00 0.01 Queen 0 4 100
  HL 3 0.30 2.76 0.11 Total 30 4 100
  T2BW 4 0.32 2.74 0.11     
  AL   0.29 1.52 0.23     
  IDM   0.30 1.95 0.17     
  HW   0.29 1.24 0.28     
  T2H* 1 0.25 10.75 <0.001 Worker 11 0 100
Swarm WL 2 0.37 3.66 0.08 Queen 0 7 100
  T1L* 3 0.18 8.43 0.01 Total 11 7 100
  PL 4 0.23 2.17 0.16     
  HL 5 0.24 3.92 0.07     
  HW* 6 0.19 5.40 0.04     
  IDm 7 0.13 1.01 0.34