4 BULLETIN 1429, U. S. DEPARTMENT OF AGRICULTURE 
detail, and extensive shipments were made. The complete 
here given, those starred being found under natural conditions 
sitic upon P. japonica itself. 
Parasites of the adult beetle: 
*Centeter cinerea Aldrich (Diptera, Tachinidae) . 
*Eutrixopsis javana Townsend (Diptera, Tachinidae). 
*Ochromeigenia ormioides Townsend (Diptera, Tachinidae) . 
Parasites of the larva : 
*Prosena siberita (Fabricius) (Diptera, Dexiidae). 
Dexia ventralis Aldrich (Diptera, Dexiidae). 
Campsomeris annulata (Fabricius) (Hymenoptera, Scoliidae). 
*Tiphia popilliavora Rohwer (Hymenoptera, Scoliidae). 
Tiphia vernalis Rohwer (Hymenoptera, Scoliidae). 
Tiphia koreana Rohwer (Hymenoptera, Scoliidae). 
Predator: 
Craspedonotus tibialis Schaum (Coleoptera, Carabidae). 
list is 
para- 
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f£A 
/Me. 
**e. 
/wr 
t/M£ 
i/#/r 
** 
sf/v: 
<J*T/T 
S/M 0&?. 
— 
__.. 
__ 
— 

_._ 
. — 
.— 
-= 
z=_ 
Fig. 2.— The sequence of parasites of Popillia japonica and related species. The dotted line 
represents the period during which adults may be found in the field, and the solid line indicates 
the time during which living parasitized hosts may be found 
In Figure 2 is given a representation of almost the entire series of 
parasites as regards their time of appearance and the stage of the 
host attacked. It is seen that all the species with the exception of the 
two dexiids pass the winter in the puparium or cocoon stage, these 
two species carrying over as earlv-stage larvae within the host grubs. 
In a consideration of this chart, it must be borne in mind that the 
periods given are as they occur under Japanese or Chosen conditions, 
which in some cases differ greatly from those in the infested area in 
America, and certain of the parasites are upon host species which 
have a different life cycle from that of Popillia japonica in the latter 
locality. The bearing of these factors upon the possible usefulness 
of the species in America will be discussed in detail in the account 
of the individual species. 
CENTETER CINEREA Aldrich' 
The first evidence of parasitism of adult Popillia japonica by 
Centeter cinerea (fig. 3) was secured by the senior author on July 12, 
1920, at Koiwai, Iwate-ken, about 300 miles north of Tokyo. Here 
the beetles were found abundantly feeding upon the foliage of 
itadori (Polygonum reynoutria) (fig. 4) and other weeds, and a con- 
siderable proportion of them bore tachinid eggs upon the thorax. 
1 Determined by Doctor Aldrich as a new genus and species, and described under the above name. 
Aldrich, J. M. Two Asiatic muscoid flies parasitic upon the so-called Japanese beetle. Proc. U. S. 
Natl. Mus., Vol. 63, pp. 1-4. 1923. 
