196 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.45. 



HABITS AND HOST RELATIONS. 



Little or nothing is known about the habits of the Signiphorinse 

 other than the gross food habits of their young. The following table 

 summarizes these habits. Ashmead wrote concerning jlavopalliata in 

 1880: 



I have watched several through my pocket lens, as they are not at all timid. They 

 would run up to a scale, tap it with their antennae, and if not satisfied with their inspec- 

 tion, would run off to another, and so on until they were suited, then backing around 

 they seemed to insert their ovipositor, probably at the same time depositing an egg 

 into the scale, (p. 30.) 



TABLE OF THE HOST RELATIONS OF THE SIGNIPHORIN^. 



On account of the fact that this list was made up later than the 

 rest of the manuscript, I have been unable to bring the nomenclature 

 of the hosts strictly up to date. 



Species. Hosts. 



1. Jlavopalliata Lepidosaphes beckii. 



Aspidiotus aurantii citrinus. 

 Chionaspis sp. on magnolia. 

 Aspidiotus camellise on Acacia. 

 Aspidiotus sp. on Hibiscus. 

 Aspidiotus sp. on Celtis occidentalis. 



2. nigra Coccus hesperidum. 



3. australiensis Acanthococcid on Eucalyptus. 



4. dactylopii Fseudococcus ephedrx. 



5. noacki A psyllid on a wild shrub. 



6. unifasciata Ceropsylla sideroxyli. 



7. bifasciata Unknown. 



8. mexicana Aspidiotus hederse. 



Aspidiotus sp. on a wild shrub. 

 Aspidiotus sp. on Ciruela and Hibiscus. 



9. rhizococci Rhizococcus sp. on a composite. 



10. aleyrodis Alegrodes sp. on orange. 



Lepidosaphes carinata. 

 Chrysomphalus aonidum. 

 Chrysomphalus dictyospermif 



11. coquilletti Aleyrodes on Quercus agrifolia. 



Aleyrodes coronatus. 

 Aleyrodes gelatinosus. 

 Orihezia sp. 



Aspidiotus subrubrescens . 

 Aspidiotus sp. on a wild shrub. 



12. aspidioti Aspidiotus hederx. 



13. townsendi Aleyrodes on a coarse grass. 



Aspidiotus sp. on a soft- wooded tree. 

 Aspidiotus on Hibiscus. 

 Aspidiotus on Celtis occidentalis. 

 Aspidiotus latanise. 

 ? Diaspis pentagona. 

 ? Aspidiotus perniciosus. 



14. fiava Aspidiotus camellias. 



15. flavella Aspidiotus latanix. 



