376 



REPORT OF STATE BOARD OF HORTICULTURE. 



eastern parasites are Aspldlotiphagus citrlnus Craw, recently reared from 

 scales from W. E. Hudson, Orlando, Florida, and Ancqjhes gracilis How. 

 which was reared orig-inally from specimens collected at Riverside, Mary- 

 land, and later from affected twigs received from Charlottesville, Virginia. 

 It is only fair to suggest that the latter species may not eventnally prove to 

 be a parasite of the San .Jose scale, since overlooked specimens of the common 

 oyster-shell bark louse may have been present on the same twigs. The type 

 of this species was obtained in 1880 from Mytilasxiis pomorum. the common 

 oyster-shell bark louse of the apple. 



Aphelinus fuscipennis is undoubtedly a very efficient aid in keeping the 

 San Jose scale in check. Mr. Alexander Craw, in the report of the State 

 Board of Horticulture of California for 1891, states that he found it doing 

 such effective work in an orchard in the neighborhood of Los Angeles that 

 complete extermination of the scale was confidently looked for. It was 

 afterwards learned, however, that the orchard became reinfested and also 

 that the partial extermination of the scale in this instance was in a measure 

 seemingly due to a fungous disease. 



— Aphcliaun Oiitspidis How. 



Islv. Koebele refers to the fact that in the case of infested trees on the 

 island of Kauai the scales were neai^lj' all punctured by a minute para- 

 site which he thought might be this species. 



PREDACEOUS INSECT ENEMIES. 



Of predaceous insects, perhaps the most interesting is the little coccinel- 

 lid Pentilia misella, which in both the larval and beetle state was found by 

 Mr. Schwarz in great numbers in Charlottesville feeding upon the scale, 

 and which also occurs in other eastern localities. The present season we 

 found its larvae on twigs from Chestertown, Maryland, collected late in 

 November. The beetles seem to prefer the full-grown female scales, and 

 were frequently observed astride a scale, almost on end, pushing their 



