THE NATURAL ENEMIES OF THE CITRUS MEALY BUG II 269 



bug has also appeared in destructive numbers." — John Isaac in "Bug vs. Bug," 

 1906, page 14. 



"Mealy Bug (Dactylopius adonidum, Signoret). This mealy hug has 

 made its presence felt in some portions of the State. It congregates in large 

 numbers in portions of the tree, especially among the clusters of fruit. 



"Treatment — This insect is effectually destroyed by the ordinary washes 

 used for scale, and by the ladybird Cryptolaemus montrouzieri, lately intro- 

 duced. This ladybird is as effectual in destroying the mealy bug as the 

 Vedalia and Novhis are in devouring the cottony cushion scale." — B. M. 

 Lelong in "Culture of the Citnis in California," 1902, page 262. 



"Of the other insects imported by Mr. Koebele, two are worthy of mention. 

 One of these, Cryptolaemus montrouzieri, is an important enemy of several 

 Coccidse such as the mealy bug, Pulvinaria, etc. This is the species which was 

 introduced in Hawaii, and has been so successful there in ridding coffee 

 plantations of Pulvinaria psidii. It is being reared in confinement and dis- 

 tributed in portions of Southern California, where the mealy bug is an im- 

 portant pest, and specimens brought to Washington have demonstrated their 

 usefulness by cleaning orange trees in the hot-houses of the Department 

 of Agriculture of mealy bugs. It gives promise of being a valuable outdoor 

 enemy wherever tlie climate is favorable, and in the North and East will be 

 a valuable indoor means of controlling soft scale." By C. L. Marlatt. In 

 "Year Book of the Department of Agriculture," 1896, page 226. 



Extracts from Bulletin No. 1 of the Claremont Pomological Club, issued 

 at Claremont, Cal., Feb. 15, 1909: 



"However, the predacious insect that has controlled the pest (mealy 

 bug) in San Diego is the Cryptolaemus montrouzieri. a ladybird. It has 

 done wonderful work there and should be introduced after fumigation. They 

 can be secured of Mr. Austin, San Diego, upon payment of his services." By 

 P. E. Smith. 



"The first time that we had the bug it did not spread much. We intro- 

 duced the parasite — the Cryptolaemus — together with it — ." "In conse- 

 quence of its remaining on the trees throughout the Winter, the Cryptolaemus 

 increased very considerably, so that last Summer ... it was present in 

 immense numbers. When fumigating last Fall, I set aside three patches 

 of about an acre each in different parts of the orchard where the mealy bug 

 was bad and the Cryptolaemus most abundant. I did this for the purpose of 

 preserving and multiplying the latter. In this we were successful, and after 

 the orchards had been fumigated the Cryptolaemus seemed to spread pretty 

 well over them. At the present time there is very little mealy bug to be 

 seen, and the general condition of the orchards in that respect is infinitely 

 better than it was last Spring and Summer." By R. C. Allen. 



"We have been devoting a good deal of attention to this pest (mealy bug) 

 the last season and we have at present a ladybird (Cryptolaemus montrouzieri) 

 that does good work on it. working in about the same manner as the Novius 

 cardinalis does on the cottony cushion scale, although it is not so thorough 



