354 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Male : Abdomen bearing two long caudal filaments ; puparium 

 felted. 



At least two species are common greenhouse pests, and the 

 others may occur within the state. 



Key to Species. 



1. Large hairs of anal lobes scarcely longer than hairs of anal ring 2 

 Large hairs of anal lobes nearly twice as long as hairs of anal ring ; 



female dorsum covered with irregular wax secretion; marginal 

 filaments all rather short, finger-like citri 



2. Pores of anal lobes distinctly grouped around the twO' stout spines 3 

 Pores of anal lobes scattered, not distinctly grouped around the 



stout spines; dorsum covered with stout pyramidal wax eleva- 

 tions ; marginal filaments, short and stout nipae 



3. Tarsal claw about half the length of tarsus ; body with long caudal 



wax filaments ; common on many greenhouse plants adonidum 



Tarsal claw not more than one-third the length of tarsus ; found 

 out-of-doors on clover and under sycamore bark trifolii 



P. adonidum Linnaeus, longispinus. Long-tailed mealy bug. 



Syst. Nat, Edn. 12, 140, 1762. 



Occasionally found on various plants in greenhouses. It has 

 been observed several times by the writer, though definite records 

 were not preserved. 



Hartford, 4 Oct., 1919. 

 P. citri Risso. destructor. Common or short-tailed mealy bug. 

 (PI. xiii, 7.) 



Essai, Hist. Nat, des Oranges, 1813. 



This is the commonest and most destructive species of the genus, 

 attacking many different kinds of plants under glass. 



Southington, i Feb., 1902; New Haven. 

 P. nipae Maskell. pseudonipae Cockerell. 



Mich. Agr. Expt Sta., Spec. Bull. 2, 28, 1896; Science Gossip, N. S. iii, 

 189, 302, 1897. 



This species occurs on palms in greenhouses, has been reported 

 from Massachusetts, and may be found in Connecticut. 

 P. trifolii Forbes. Clover root mealy bug. 



Rept Ins. 111. 14, 72, 1885. 



Though not yet recorded from Connecticut, it may occur in the 

 state ; reported from New York. 



In addition to the species listed above, P. hromeliae Bouche, 

 P. claviger King and Tinsley, P. cockerelli King and Tinsley, 

 P. sorghiellus Forbes and its variety kingii Cockerell, have all been 

 reported from Massachusetts, mostly in ants' nests, and may occur 

 in Connecticut. 



Subfamily Coccinae. 



The scales belonging to this subfamily are commonly known as 

 "soft scales," and are among the largest species of scale insects. 



