116 



But let us not be misled in our hopes. While the beetle 

 thrives on the rose scale in the laboratory, there is no telling 

 what will be its fate when it is placed out of doors. Mr. Koe- 

 bele has undoubtedly introduced the beetles into these Islands 

 in the past, but no records are at hand to say whether they ar- 

 rived in good condition and whether they were properly cared 

 for upon arrival, nor have any specimens of the ladybirds been 

 collected thus far. When the colony is sufficiently strong no 

 effort will be spared to establish the insect in the Territory. 

 Even if it does not prove a signal success it will doubtless prove 

 useful in helping to check some scale insects, especially upon 

 plants in yards not otherwise looked after. 



"SCUTELLTSTA" (SciiicUUta ctjmiea, Motsch).° 



This is the name of a steel blue, four-transparent-winged 

 tiy which has been imported into California from South Africa 

 where it was discovered to be an effective check against the 

 black scale (Saissetia olcae, Bern.). This scale has long been 

 one of the worst pests in the citrus and olive orchards of Cali- 

 fornia, but owing to the successful introduction and effective 

 work of Scutellista the importance of this scale as a pest has 

 ceased. Through the courtesy of Mr. E. M. Ehrhorn, the pres- 

 ent Horticultural Inspector at San Francisco, a colony of this 

 interesting parasite was received by Mr. Craw on the 25th of 

 August. Most of the arrivals were in the pupa stage and the 

 first dozen specimens that issued was released in and about 

 Kapiolani Park upon Hibiscus infested with Saissctia nigra, 

 Nietner. This scale was resorted to as food because /S>. oleae is 

 exceedingly scarce in Honolulu. The parasites that issued sub- 

 sequently were released upon potted Hibiscus plants infested 

 with >Sf. nigra, confined in a breeding cage. Thirty days later 

 ample evidence of the establishment of this important parasite 

 in Honolulu was to be observed upon the confined plants, as 

 well as those in Kapiolani Park. The evidence consisted of 

 the characteristic exit holes in the scales, and the numerous 

 adults flying about in the cage. The success thus attained was 

 gratifying indeed, and particularly interesting because it was 

 accomplished by means of another species of scale insects, and 



° Reprint from October, 1905, "Forester and Agriculturist." 



