U. S. T>. A., B. E. Tech. Ser. 16, Part V. Issued December 6, 1912. 



PAPERS ON COCCIDil OR SCALE INSECTS. 



THE GENUS FIOEmiA" IN THE U¥ITED STATES. 

 By E. R. Sasscer, Scientific Assistant. 



INTBODUCTION. 



The genus Fiorinia at the present time consists of some 30 described 

 species and 4 varieties, and of this number there are only 2 species 

 and 1 variety estabhshed in this country, viz, Fiorinia Jiorinix 

 Targioni Tozetti, F. tliex Green, and F.Jiorinise japonica Kuwana. 

 Judging from the available records at hand, it is quite evident that 

 the first two coccids mentioned were imported on ornamental plants, 

 and their status in some locations is such as to warrant the use of 

 remedial measures. The last-named variety oijiorinix is a Japanese 

 importation, and while it appears to be estabhshed in only one State, 

 it is not infrequently collected at quarantine on imported evergreens. 



Fiorinia Targioni. 



This genus is characterized by the adult female being smaller, 

 decreasing in size after the second molt, and entirely inclosed in the 

 second larval exuvia; puparium elongate, with first I'arval exuvia 

 extending beyond the margin, Male scales white, elongate, with 

 or without carinas, larval exuvia at anterior extremity. Pygidium 

 of adult female {Fiorinia s. str.), possessing well-defined median lobes, 

 and some species exhibiting a small pair on either side; paragenitals 

 normally in five groups, although in some species the median and 

 anterior laterals coalesce, forming an arch. 



Leonardi in his paper,^ ''Saggio de Sistematica delle Fiorionise" 

 divides Fiorinia sens. lat. into three subgenera, viz, TruUijiorinia 

 (paragenitals and lobes present), Anamefiorinia (paragenitals present, 

 lobes absent), and Adiscqfiorinia (paragenitals absent). Fiorinia s. 

 str. is characterized by possessing paragenitals and plates, and the 

 species discussed in this paper come distinctly within this division. 



1 Redia, vol. 3, p. 16, 1905. 

 57972°— 12 75 



