258 journal of economic entomology [vol. 14 



Neuroptera 



Chrysopa sp. |Hemerobiidae] 



A species similar to the American Chrysopa externa Hagen. First recorded in 

 November, 1919, but examination of collections shows its presence as early as 1914. 

 It is known on Maui as well as Oahu. The larvae feed on various kinds of plant 

 lice. 



Single or few specimens have been taken of a niunber of other for- 

 eign insects tmder circumstances not conclusive of their being estab- 

 lished. For example: Apion sp., Scypophorus sp., a Cerambycid, 

 a Malachiid and a Bostrychid. 



Twenty-six species are above enumerated, as per records in the Pro- 

 ceedings of the Hawaiian Entomological Society. These species are 

 distributed in the Orders as follows: Hymenoptera 9; Diptera 6; 

 Coleoptera 6; Homoptera 3; Orthoptera 1; Neuroptera 1. 



Mr. a. H. Rosenfeld : I would like to ask if burning of sugar cane 

 trash is general in Hawaii, and if so, what effect it has on the parasites? 



Mr. 0. H. Swezey: The burning of trash is general before sugar 

 cane is harvested, and in almost the entire cane district fire is run 

 through the fields to bum the trash and facilitate harvesting. We be- 

 lieve it has no effect upon the parasites of insects pests, for the reason 

 that in all cases there are sugai cane fields growing in all stages from 

 very small to mature cane, and the pests and parasites, if present, have 

 migrated to these different fields and become established. Parasit- 

 ism is well under way before a mature field is burned off in the process 

 of harvesting. 



Mr. L. O. Howard: I was told that there was a case in the sum- 

 mer of 1915 when a leaf hopper outbreak on the Island of Oahu was 

 said to be due to burning of trash and the destruction of the parasites. 



Mr. O. H. Swezey: There has been injury in this way at times to 

 isolated fields, but in general the damage to parasites by burning fields 

 is as I previously stated. 



President Wilmon Newell: The next is by W. H. Larrimer. 



