7(j ANM Ai. i(i;i'< uri s ni" m;i' Alt r.Mi:.\ i" oi' a< ;Ki( Ti/i l'kk. vx\i 
I'AKASITKS OF FOREST INSK( TS 
TIk* licld of rsi i;r;it i(»u of \t\i\o shoot moth parasit»-s was sliifir*! from 
lOnjrlaiid to the N«'t lu'rhuuls for the coHcctioii of material during May and June 
TJ.'iT. A total of :'>.440 cocoons, comprising M or more siKt ios, were forwardcHl. 
and also G,~)00 dead iiost larvae <-oMtaining an estimated 1(mi.(km» Copidusoitm 
(jcnUulat 1(1)1 Dal. 
A total of 7. KM) ]»;trasilcs of S sjn-cic^ cnicrirccl fn.in (hr l(iij.(Kio huch casr- 
bearer larvae sliijiped from Ilngland in ID^iO. The collections in 11>H7 were tnade 
in the Netherlajids and .l.'i.oOO host ca.se.s were shipiKHl during May. 
PARASITES OF CEREAL AND FORAGE INSECTS 
Attemion has been given to securing two European para.sites of the hessian fly 
for colonization in the United States. These, however, have not proved to he 
abundant in any section. Large (iuantiti«'s of infested wheat straw were set 
aside for parasite emergence, an(l l,Oi>^> Platygastrr plciiron Walk, and 80." 
Trichasift rcniuliis Walk, were reared out and shipped. 
Investigations of parasites of the European corn borer were limited to Italy, 
where collections for ChvJonus auHitJipCH Wesm. were made. A total of 8.">,0X) 
host larvae were shipped late in 19o6, and these were estimated to ocmtain 
.',500 Ch clonus and probably a larger number of other parasites. 
PARASITES OF TRUCK CROP AND GARDEN INSECTS 
Extensive .shipments of ])ea weevil parasites were made during the smnmer 
of If 30 from France and Austria. A total of 5.000 TriaMpin thoracirun Curt, 
were obtained from 400 pounds of infested horsebeans ship])e(l from France and 
reared out under (piarantine conditions. In addition .SO.OOO adults of the same 
species were shii)ped from Austria. The number that reached the I'acitic Nt>rth- 
west alive ;ind were colonized totaled 26.5(M>. The spring .shipments of 1937 
contained approximately 05.000 parasites of the same species. A portion of these 
are to be utilized against the vetch bruchid in the Eastern States. 
Preliminary studies were made upon the parasites of the lima bean pod borer 
in France and Austria, and it was determined that several promising parasites 
occur in those countries. Small test shii)ments of Mirnthrdcmi jiif/rr Wesm. and 
Phnncrotown pJanifr(t}ix Nees were made during the sununer of VX\y\. 
IMPORTATION OF FRUITFLY PARASITES INTO HAWAII 
The exploratory work under this special project was completed late in the 
sununer of 1936. During the O-month period covering actual importations 2,554» 
adult i)arasites of 14 species and OS predacious l>eetles of 2 species reaclu'd 
Hawaii alive. These originated in West Africa. Brazil, Puerto Rico, Mexico, 
^lalaya. and India. No recoveries of these natural enemies have yet been made 
in Hawaii. 
PARASITE IMPORTATIONS INTO PUERTO RI( () 
The work in Puerto Ilico luuhu' special funds was completed in September 
1936, since which time further activiti(»s in this line have been on a C(H)iH^rative 
basis with the Oftice of Experiment Stations. The i)rin<ii)al shipments <»f the 
year are listed in table V.). 
T.VHiK \\\. Sh limn Ills of inir<i.sit(.\ into Pin it a Rito iliiiinti tin fi.scnl iicnr ^ 
Host 
Lima \>c:\n pod borer 
I'inwipple niealybiiR. 
Do 
I'ink Ixillworm 
Do 
West Indian fruitflies 
White i^each scale 
Parasite 
Mncrocnitrus aucyUionis Roh 
Aiiaovnis coccidiroriis Dor 
Ilnmblftonitt psfuiococcina Comp. 
I'lieristfi robonUor F 
Clielonvf htackbiiTni Cam 
8 specie." - 
ProspalteUa berletei How 
Number 
shipiied 
I 
.1, 530 
102 
S8 
in. 300 
I'.J. 20(1 
2,600 
863 
' In nddilicm 11 tolsil of 7..V»0 diinu lHH<tlo«, of 4 siK'cio';, wore shipped from TeMij ami H:»w.'\ii. 
