36 POMONA JOURNAL OF ENTOMOLOGY 



DD. Sides without rows of spine areas ; eggs not enclosed 

 in an egg-sac. On roots of Solaiiiim douglasii. 



so Ian i. 

 CC. Antennae with article 2 sub-equal with 3. (either may be 

 slightly the longer ) . 



D. On leaves and in cracks of bark of Oucrcus cliryso- 

 Icpis. qucrcus 



DD. On roots of Eriogonuin latifoHuiu. 



mariiiinus. 

 AA. Third article of antennae three-fourths as long or longer than the last ; spines 

 of the anal lobes usually not longer than the circumanal spines, {citri, 

 scqnoiac, etc., excepted.) 



B. Lateral margins of all segments with dark callouses bearing two to 



eight denticles ; antennae 7-articled. On roots of Rainoiia stachy- 



oidcs. 



PhcnacoccHS raiitonac n. sp. 



BB. Lateral margins of segments without denticled callouses ; antennae 



8-articled. 



C. .Article 1 of antennae as long as 3 and longer than 2 ; spines 

 of anal lobes as long as circumanal spines. On Opnntia 

 and under the bark of Sambucus glatica. 



obscunis n. sp. 



CC. .\rticle 1 of antennae shorter than either 2 or 3. 



D. Anal wax appendages as long as entire body ; spines 



of anal lobes much shorter than circumanal spines ; 

 on various cultivated plants. 



loiigispiniis. 

 DD. .\nal wax appendages much shorter than the body. 



E. Articles 2 and 3 of antennae sub-equalhng 8 ; 

 anal wax appendages about one-third 

 length of the body. 



F. Article 1 of antennae shorter than 5 ; 

 viviparous. 



C. Bodv wholl}- light yellow, 

 thickly covered with mealy 

 wax ; secreting only a 

 white cottony matter, on 

 whicii the female rests. On 

 tile leaves of Raiiioiia 

 polystachya. 



