24 CALIFORNIA STATE COMMISSION OP HORTICULTURE. 



niula: 832(17) (5 64). The penultimate segment bears on either side 

 a very long seta and two or three very short ones, and two conical pro- 

 jections; the surface of the segment is dotted with orifices. Six slender 

 setse, one half the length of the setae on the penultimate, are borne by 

 the anogenital ring, which is somewhat projected from the penultimate 

 segment. Female oviparous; deposits eggs in cottony sac, which in- 

 creases in size as the female grows. 



On citrus, Cycas revoluta, coleus, ferns, and many plants in hothouses. 



This is the common mealy-bug and can be found in almost any 

 greenhouse or private conservatory. In a few instances it has been 

 reported as occurring in citrus orchards. In these cases a colony of 

 Gryplolsemus montrouzieri (Coccinellid), known as the ladybird enemy 

 of the mealy-bug, soon cleans up the pest. In the greenhouses they do 

 not work so well, as the mature beetle flies against the glass and tries 

 to escape, but in the open they control this pest wherever liberated. 



Pseudococcus long-ispinus Targ. 

 (Mealy-bug.) 



Female. — Length 2.5 to 3 mm., width 1.5 to 2 mm. White or tinged 

 with yellow, with brown band on middle of 

 back; each segment with a white waxy filament, 

 which forms a border of appendages of varying 

 lengths around the body; those near the poste- 

 rior extremity longer, and four at caudal end 

 very long, the inner the longer, sometimes longer 

 than the body. Entire body appears as if dusted 

 with flour, which is caused by the waxy secre- 

 tion. Antennae 8-jointed, each joint bearing 

 seven hairs. Formula: 8 (2 3) (1 5) (4 6) 7. The 

 legs are long, stouter than in P. citri, somewhat 

 pubescent; tibia twice as long as tarsus. The 

 penultimate segment presents on either side a 

 FIG. 8. Pseuddcorriof iongis- rouuded group of porcs and two short, strong 

 pinut,. 1 La y ug. gpines, also a seta somewhat longer than the 



anal seta, and several shorter seta?. Anal ring large, dotted with six 



long setae. 



Larvse. — The male and female larvae are similar to adult female in 



shape and color, but the male larva has 7-jointed and the female 



6-jointed antenna. 



On fern, croton, coleus, citrus, Cycas revoluta, and many hothouse 

 plants. 



