THE COCCIDAE OF CALIFORNIA. 25 



This species differs from P. citri, as it has long threads or spines 

 extending from the end of the body. lis habits are the same as /*. citri 

 and it is usually to be found on the same host plants. 



Pseudococcus maritimus Ehrh. 



Femali'. — Elongate oval, about 2 mm. long and 1 mm. broad, flattish, 

 slightly covered with secretion. Color of body, reddish brown. Margin 

 beset with stout, short, white filaments, which grow longer caudad. 

 Caudal setae about one-half length of body. Legs and antennae same 

 color as body. 



Eggs orange-yellow. Egg sac well developed and has the appearance 

 of Pulviiuiria cameUcoln, but smaller — about 5 mm. long and 2 mm. 

 broad. 



Young larva; light orange-yellow. 



When boiled in KHO, female turns liquid purple and derm becomes 

 colorless. Body thickly beset with long slender spines and many round 

 glands. Each segment has a group of spinnerets on its margin, in the 

 center of which are two short stout conical spines. Antennee 8-jointed, 

 quite hairy. Joint 8 always longest, and joint 4 generally shortest, 

 although joint 6 sometimes is shorter than 4; again, joints 4 and 6 

 are sometimes equal. The following formulae will assist in determin- 

 ing the species: 8 2 (1 3) (5 7) 6 4. 82(13)5(47)6. 8321(57)64. 

 8 1(23)57 (46). 



Legs quite hairy, well developed, long and slender. Trochanter with 

 long stout spine (128/<). Femur about as long- as tibia. Tarsus about 

 a third as long as tibia. Claw short and stout. Digitules fine knobbed 

 hairs. Caudal lobes prominent, with moderately long setse and two 

 very stout conical spines. Anal ring large, with six very long stout 

 hairs. 



On Eringonum latlfolium. 



Pseudococcus quercus Ehrh. 

 Fern (lie. — Slightly covered with white secretion, about 2i mm. long 

 and li mm. broad, tapering at both ends. Color of body greenish 

 brown, concealed more or less by secretion. Segmentation very distinct. 

 Each segment bears a white filament on the margin. Caudal setse 

 about one third as long as body, white and very stout. Antenna? and legs 

 dark brown. When placed in boiling KHO, body turns crimson; derm 

 becomes colorless after boiling. Antennae 8-jointed; joint 8 longest, 

 joint 7 generally shortest. Formula, approximately: 8 3 2 (1 5) 6 4 7. 

 Each joint has a ring of stout hairs. Joint 8 has numerous very long 

 hairs. Legs long and stout, with numerous long fine hairs; femur 

 about as long as tibia; tarsus about a third as long as tibia; claw 

 3-c 



