Progress With the Imported Parasites of the Japanese Beetle During 19271

Abstract

This paper is a progress report on the work of introducing parasites of the Japanese beetle ( Popillia japonica ) during 1927. Centeter cinerea increased its area of distribution, but is being imported for further colonization. Ochromeigenia ormioides has not yet been recovered, but recoveries were made of both Prosena siberita and Dexia ventralis . Further liberations were made of these three fly parasites. Tiphia popilliavora has increased rapidly from the small beginning previously reported. Tiphia vernalis and TiPhia No. 1851 were liberated in large numbers but have not yet been recovered. Importations have been continued on the Indian Tiphias Nos. 2036 and 2049. Some parasite material was forwarded to the substation at Westbury, Long Island, New York. The paper is concluded with a brief resume of the work accomplished since 1920.