308 PARASITES OF GIPSY AND BROWN-TAIL MOTHS. 



HYMENOPTEROUS PARASITES OF CATERPILLARS. 



Apanteles fulvipes Hal. 



Received first in 1905, dead, and in 1908, living. Colonized unsatisfactorily in 

 1908 and under exceptionally favorable conditions in 1909 . Two generations recovered 

 in immediate vicinity of colony site in 1909. Not recovered in 1910 except from 

 recent colony. Establishment doubtful on account of lack of proper alternate hosts. 



TACHINID PARASITES. 



COMPSILURA CONCINNATA Meig. 



First received in 1906 and colonized same year. Colony strengthened in 1907. 

 Recovered doubtfully in 1907 from immediate vicinity of a colony site. Certainly 

 recovered and found to be generally distributed over considerable territory in 1909. 

 Marked increase in 1910. Apparently established. 

 Carcelia gnava Meig. 



Doubtfully colonized in 1906. Satisfactorily colonized in 1909. Not recovered 

 from field. Establishment hoped for. 

 Zygobothria gilva Hartig. 



Doubtfully colonized in 1906. Satisfactorily colonized in 1909. Not recovered 

 from field. Establishment hoped for. 

 Tachina larvarum L. 



First received in 1905 and colonized in 1906. Much more satisfactorily in 1909. 

 Not recovered. Establishment doubtful on account of hybridization with similar 

 American species. 

 Tachina japonica Towns. 



First received and poorly colonized in 1908. A better colony put out in 1910. 

 Recovery doubtful on same account as above. 

 Tricholyga grandis Zett. 



Doubtfully received and colonized in 1906. Satisfactorily colonized in 1909. 

 Recovered from immediate vicinity of colony site in 1909. Not recovered in 1910, 

 but establishment hoped for. 

 Parasetigena segregata Rond. 



First received in 1907 and colonized in 1910. Not recovered. Establishment 

 hoped for and expected. 

 Blepharipa scutellata R. D. 



First received in 1905. Colonized under very unsatisfactory conditions in 1907. 

 Satisfactory colonization for first time in 1909. Recovered from immediate vicinity 

 of colony site in 1910. Establishment confidently expected. 

 Crossocosmia spp. 



First received in 1908 and colonized in 1910 under fairly satisfactory conditions. 

 Not recovered. Establishment rather doubtful on account of unsatisfactory colony. 



PARASITES OF THE PUPA. 



MONODONTOMERUS ^EREUS Walk. 



First received in 1906. Colonized in 1906. Recovered, generally distributed over 

 considerable area, in winter of 1908-9. Firmly established and dispersing at a very 

 rapid rate. 



Pimpla spp. (See Parasites of the brown-tail moth.) 

 Chalcis obscurata Walk. 



First received in 1908. Colonized in 1908 and 1909, but not satisfactorily. Estab- 

 lishment doubtful on account of small size of colony. 



