1934 ] 
The European Corn Borer on Long Island 
219 
The other important host plant is the lima bean. Al- 
though there is but little loss in yield from the attacks of 
the European corn borer on lima beans, this plant becomes 
a potential means of spread for the insect into noninfested 
areas, when its pods are transported into such territory. 
The development of a severe infestaton in the two-gener- 
ation district on the eastern tip of the Island, and its prac- 
tical isolation from neighboring infestations, presented an 
excellent opportunity to demonstrate the extent and efficacy 
of control by parasites. Accordingly, during the summer of 
1933 a total of 67,435 imported parasites of the European 
corn borer were liberated at carefully selected points in the 
eastern half of Suffolk County. In these liberations were 
represented 13 European and 3 oriental species, as shown 
in the following list: 
Number of 
Species Individuals 
Apanteles thompsoni Lyle 
126 
Campoplex multicinctus (Grav.) 
35 
Campoplex pyraustae Smith 
12 
Ceromasia lepida Meig. (oriental) 
278 
Chelonus annulipes Wesm. 
1,630 
Cremastus flavoorbitalis (Cam.) (oriental) 
233 
Eulimneria alkae Ell. & Sacht. 
696 
Eulophus viridulus Thoms. 
21,017 
Inareolata punctoria (Roman) 
3,686 
Lydella stabulans var. grisescens R.D. 
19,524 
Macrocentrus gifuensis Ashm. 
17,139 
Micro g aster tibialis Nees 
2,804 
Phaeogenes nigridens Wesm. 
20 
Phorocera erecta Coq. (oriental) 
4 
Z enillia mitis Meig. 
99 
Z enillia roseanse B. & B. 
132 
Total liberated 67,435 
Judged by their past ability to adapt and acclimatize 
themselves, and by the effective work they have done since 
their introduction into both the New England and the 
North Central State areas, it seems very probable that the 
