Table 1.--Description of suitability ranks summarized from the literature


No.                                               Basis of rank                     

1    Campbell and Sloan 1977  Composite defoliation ratio between each tree         
     (Table 6, page 17)       species and white oak                                 
                              1 defoliation ratio > 0.5                             
                              2 0.1 < defoliation ratio < 0.5                       
                              3 defoliation ratio < 0.1                             

2    Gansner and Herrick      Average defoliation by species:                       
     1985 (Figure 2, page 2)  1 defoliation > 30%                                   
                              2 10% < defoliation < 30%                             
                              3 defoliation < 10%                                   

3    Lechowicz and Jobin      Composite Electivity Index (E) based on larval        
     1983                     abundance:                                            
     (Table 2, page 178)      1 E* > 0                                              
                              2 -0.62 < E* < 0                                      
                              3 E* < -0.62                                          

4    Mauffette et al. 1983    Composite Electivity Index (E) based on larval        
     (Table 3, page 58)       abundance:                                            
                              1 E* > 0.1                                            
                              2 -0.3 < E* < 0.1                                     
                              3 E* < -0.3                                           

 5   Miller and Hanson 1989a  Larval survival:                                      
     (Appendix I, pages       1 Larval survival from 1st instar, 100% pupation      
     30-48)                   2 Larvae did not survive at all instars, less than    
                              100% pupation                                         
                              3 Larvae did not molt, no pupation                    

6    Miller and Hanson 1989a  Pupal weight:                                         
     (Appendix I, pages       1 pupa > 1000 mg                                      
     30-48)                   2 700 mg < pupa < 1000 mg                             
                              3 pupa < 700 mg                                       

7    Miller and Hanson 1989b  Larval survival:                                      
     (Table 1, pages          1 survival from 1st instar, 100% pupation             
     427-428)                 2 survival from 1st instar, less than 100% pupation   
                              3 survival from later than 1st instar, less than      
                              100% pupation                                         

8    Miller and Hanson 1989b  Pupal weight:                                         
     (Table I, pages          1 pupa >1000 mg                                       
     427-428)                 2 700 mg < pupa < 1000 mg                             
                              3 pupa < 700 mg                                       

9    Montgomery 1994          Average weights of 1st instars after 10 days          
                              feeding:                                              
                              1 larva > 8 mg                                        
                              2 2.5 mg < larva < 8 mg                               
                              3 larva < 2.5 mg                                      

10   Nielsen 1992             Larval growth and survival:                           
                              1 High growth and survival of new larvae              
                              2 Growth rate is less than group 1, but considered    
                              good hosts                                            
                              3 Supported growth to about the same extent as red    
                              maple                                                 
                              4 Larvae did not survive                              

11   Mosher 1915 (plant       Larval foliage preferences:                           
     classification tables,   1 Favored food                                        
     pages 33-34)             2 Favored after the earlier larval stages             
                              3 Not particularly favored                            
                              4 Unfavored                                           

12   Mosher 1915              Larval foliage preferences:                           
     (reinterpretation of     1 susceptible                                         
     narratives)              2 resistant                                           
                              3 immune                                              

13   Edwards et al. 1981      Tests of foliage preferences by larvae:               
     (Appendix 5, pages       + accepted flora                                      
     35-37)                   - non or poorly accepted flora                        

14   Forbush and Fernald      Tests of foliage preferences by larvae:               
     1896 (plant lists,       + accepted flora                                      
     pages 318-323)           - accepted only when forced by starvation             

15   Montgomery 1991 (From    Ratio of the pupal weight on the host to the pupal    
     Table 2, page 5)         weight on white oak within the same study:            
                              1 ratio > 0.9                                         
                              2 0.5 < ratio < 0.9                                   
                              3 ratio < 0.5