June. I9i6.] WeISS : InSECT FaUNA OF GREENHOUSES. 145 



Thrips tabaci Lind. 



The onion thrips. On cucumbers under glass. 

 Heliothrips haemorrhoidalis Bouche. 



The common greenhouse thrips. Feeds on ferns, croton, dahlias, 

 azaleas and others. 



Order HOAIOPTERA. 



Family APHIDID.^. 

 Aphis gossypii Glover. 



The melon aphis. On cucumbers under glass. 

 Aphis hederae Kalt. 



On English ivy under glass. Not common. 

 Aphis nerii Fonsc. 



On oleander. Not common. 

 Aphis rufomaculata Wils. 



Green aphis of chrysanthemum. Also occurs outside. 

 Rhopalosiphum violae Pergande. 



On violets in greenhouses. 

 Macrosiphum lactucse Kalt. 



The lettuce plant louse. On lettuce under glass. 

 Macrosiphum rosae Linn. 



The rose aphis, common. Also occurs outside. 

 Macrosiphum sanborni Gill. 



The black aphis of chrysanthemum. Also occurs outside. 

 Myzus rosarum Kalt. 



On roses. Common. Also occurs outside. 

 Myzus persicae Sulz. 



Attacks carnations, asparagus fern. Primula under glass. Occurs 

 outside on peach, etc. 



Family ALEYRODID^. 



Aleyrodes vaporarium West. 



The '■ greenhouse white fly," found on tomato, melon, cucumber, 

 fuchsia, heliotrope and many others under glass. 



Order HEMIPTERA. 



Family MIRIDJE. 

 Halticus citri Ashm. 



An outside feeder, Init has been found in greenhouses on chry- 

 santhemum and smilax. 



