BULLETIN NUMBER 23, DECEMBER, 1893. 77 



Iclineumou flies prey upon the Codling ]\Iotli. These are Phygadeuon 

 brevis, Pacliyinerus vulnerato)- and Canipopiex pomorum Etz. On the 

 Pacific Coast the Ring-legged Pimpla, {Pimpla a/iniilipes Br.,) is an im- 

 portant parasite of the Codling Moth, as ascertained by Mr. Albert Koe- 

 loele Avho has also fonnd several new enemies of this insect there. Two 

 ]lermestic beetles also feed npon the pupa in California. These are 

 Trogoderma tarsale and Pcriviegatoma variegatum as shown in my Annual 

 Eeport as U. S. Entomologist, for 1887. Mr. Koebele has also found a 

 species of the Chalcidid genus Trichogramma, which infests the eggs of 

 the Codling Moth and has further observed that the larva of a species of 

 the very peculiar IS'europterous genus Rhaphidia runs up and down the 

 tree trunks, searching for C^odling Moth larva? and pupai (see Bulletin 

 ^2, Division of Entomology, F. 8. Department of x\griculture, pp. 90-92). 

 Mr. Koebele has also reared a parasite of the genus Pteromalus, but this 

 may be a secondary parasite on the Pimpla above mentioned or upon one 

 of two other primary parasites of the genera Cryptus and Phygadeuon 

 which he has also reared from Codling Moth cocoons. 



Some of these California insects were sent by me through Mr. 

 Koebele to Xew Zealand and Australia, for the purpose of introducing 

 them into the apple orchards of those countries, and they as well as the 

 European parasites, are mentioned in this connection, as it may be 

 desirable in special cases to introduce them into apple orchards in the 

 eastern United States. 



THE GREEX JUNE BEETLE. 



. (AUorhina iiiticla L.) 



This is an insect which has become more and more noticeable during 

 recent years and has at times proved exceedingly destructive, especially to 

 lawns in the vicinity of Washington. It is very common in Maryland, 

 where it is known ordinarily as the June Beetle or the June Bug, a term 

 which has, however, been very loosely applied to several insects and par- 

 ticularly to the common May Beetle {Lachnostenia fused). These May 

 Beetles, or June Bugs as they are called in the northern states, of the 

 genus Lachnosterna, are brown beetles which begin to fly in the month of 

 May, though they continue into June and even later, in the latitude of 

 Washington. Under the circumstances it will be Avell to designate the 

 insect I am now treating by the name indicated in the title. The larva3 

 of this insect and those of the May Beetles,have a similar general appearance 

 and are known popularly among farmers by the rather comprehensive 

 name of White Grubs. The larvas of the true May Beetles are, as a rule, 

 smooth and naked in appearance, though when examined under a strong 

 lens, minute stiff hairs or bristles may be found on different portions of 

 the body. But the larva of our Green June Beetle is clothed with min- 

 ute yellowish hairs in sufficient numbers to make them easily observable 

 with the naked eye. The two kinds of White Grubs may be further dis- 

 tinguished by the fact that when the larva of AUorhina is placed on a 

 smooth surface it will immediately turn over on its back and rapidly 

 move away by the alternate expansion and contraction of the body seg- 



