531 



The Green Japanese Beetle in New Jersey 



BY J. L. KING, 



Of the Pennsylvania Department of Agriculture. 



Air. King discussed at some length the invasion of the 

 States of New Jersey and Pennsylvania by the green Japanese 

 beetle (Popilia japonica) and the progress of the v^ork being 

 done to suppress it. He was en route to Japan in search of 

 parasites of this beetle. 



Opcstega in the Hawaiian Islands (Lep.). 



BY O. H. SWEZEY. 



In. the "Fauna Hawaiiensis," two species of this genus were 

 described and figured: maculata Walsm. and dives Walsm. The 

 former on a single specimen from Molokai. and the latter on 

 two specimens from Halemanu, Kauai. These are very small 

 moths, and in all of my collecting in the Hawaiian forests I 

 have only once collected a specimen of this genus. It was 

 on the summit of Mt. Kaala of the Waianae Range, Oahu, and 

 was not either one of the described species. I have, however, 

 reared four different species from mines in the leaves of 

 various species of Pcica, from various localities on Oahu. 



Peculiar mines were discovered in the leaves of Pclca a 

 long time ago, but the insect producing them was not ascer- 

 tained. Finally larvae were found in some of the mines, but at 

 first it could not be determined to what order of insects they 

 belonged. The larvae are very slender, and the head structure 

 very peculiar. In 1910, when I was at the National ]\Iuseum 

 at Washington, D. C, Mr. Busck showed me some larvae which 

 he had recently received of a species of Opostega which is a 

 cambium-miner in Ribes. I at once noted the similarity of 

 these larvae to those found in the mines in Pelca leaves, and. 

 hence, since then considered that these mines were produced 

 by Opostega larvae. 



I have repeatedly brought in Pelea leaves with mines and 



Proc. Haw. Ent. Soc, IV, No. 3, September, 1921. 



