No. 634] IN SECT ENEMIES OF POLYPOKOID FUNGI 445 



niferous trees and as a class are very destructive to trees and 

 timber. 



New Jersey is not particularly rich in this group, only some 50 

 species having been found up to the present time and the state 

 has been fairly well collected over. Many of these were taken in 

 what is known as the Piedmont Plain section and while this area 

 is largely under cultivation, it has many large swamp areas and 

 the forests are deciduous. The Pine Barren section of the state 

 was almost devoid of polypores and in the other sections they 

 were found in earying numbers, depending on the size and loca- 

 tion of the forested area. Several sections of the Piedmont Plain 

 yielded the most and the species were by far more numerous here 

 than in any of the other sections of the state. 



Of the 50 different species of polypores collected 80 per cent, 

 were found to be infested by insects, which were distributed as 

 follows: Of a total number of 74 species, 59 belonged to the 

 Coleoptera, 1 to the Hemiptera, 3 to the Lepidoptera, 5 to the 

 Hymenoptera and 6 to the Diptera. Of the 6 species of Diptera, 



2 were crane flies found associated with soft, watery polypores, 



3 were fungus gnats and 1 was a member of the Ortalida. All 

 of the Hymenoptera were parasites of beetles. The 3 species of 

 Lepidoptera belonged to the family Tineidce and the one hemip- 

 teron was the flat bug Aradus simUis found on Polyporus betu- 

 linus and Fomes pinicola. In the Coleoptera 17 families were 

 represented, according to the following table : 



Hydrophilidm 1 



Staphylinidie 3 



Mycetophagidae . 



Nitidulidas 

 Tn>L. r '>-iti'ki' 



Bostrychidie 

 Cisid© ... 



Anthribidae 



