VI MISCELLANEOUS PAPEES, 



Page. 



PfiATE VI. FiQ. 1. — Cryptothrips salicis: Head and prothorax of female 20 



2. — Cryptothrips salicis: Left antenna of female 20 



3. — Cryptothrips salicis: End of abdomen of female 20 



4. — Phlceothrips jennei: Head and prothorax of female 20 



5. — Phlceothrips jennei: Right antenna of female 20 



6. — Phl(K0thrips jennei: End of abdomen of female 20 



VII. EiG . \.— Phlceothrips armiger: Head and prothorax of male 20 



2. — Phlceothrips armiger: Right antenna of male 20 



3. — Phlceothrips armiger: Left fore leg of male 20 



4. — Phlosothrips armiger: End of abdomen of male 20 



TEXT FIGURES. 



Fig. 1. Vials used for the study of thrips parasites 29 



2. Cage for rearing parasites 30 



3. Parasitized prepupae of Heliothrips fasciatus 31 



4. Diagram illustrating length of time from appearance of parasitism to | 



formation of parasite pupae of Thripoctenus russelli, July-October, 



1911 32 



5. Thripoctenus russelli: Pupa, ventral view 33 



6. Diagram illustrating length of pupal stage in 146 individuals of Thripoc- 



tenus russelli 34 



7. Thripoctenus russelli: Adult 35 



8. Diagram illustrating length of time from oviposition to first evidence of 



parasitism for 353 individuals of Thripoctenus russelli 47 



9. Diagram illustrating length of time from oviposition to pupation for 



241 individuals of Thripoctenus russelli 48 



10. Diagram illustrating total number of days in the life cycle of Thripoc- 



tenus russelli; summary of all rearing experiments 49 



11. Mailing tubes used in shipment of thrips parasites 51 



