43 



A CONTRIBUTION TO A KNOWLEDGE OF 'I'HE 

 BELLADONNA LEAF-MTNEH, PKGOM VIA 

 HYOSCYAMI, PANZ., ITS LI KK-II ISTOIIV AND 

 BIOLOGY I 



ALFRED E. CAMERON, M.A., B.Sc. (Abeid.). M.8c. (Manch.). 



Board of Agriculture Scholar and Honorary Research Fellow 

 in the University of Manchester. 



{From the Department of Agricultural Entomology, 

 Manchester University. ) 



CONTENTS. 



PAGE 



1. Tntrod notion .......... 44 



2. Syuonomy of the Species and Nomonolaturo of the Genus . 45 



3. History of the Species 46 



4. Distribution .......... 49 



5. Food Plants .50 



6. Description of the Leaf-Minei', Pcgomyia lu/o.^icymni . . 51 



The adult ... 51 



The egg . ........ 52 



The larva ... 53 



The puparium ........ 54 



7. Copulation, Oviposition and Egg Period .... 55 



Habits of larva, duration of the various larval stadia, 



pupal period ... ... 59 



The adult period, length of life-cycle .... 61 



8. The Buccal-Pharyngeal Apparatus ...... 62 



9. Comparison with Petjomyin hicolor Wied. and Prgomyla iiiqri- 



tarsis Zett. . . ...... 63 



10. Remedies in England ........ 65 



11. Natural Enemies ......... 68 



12. Relation to Host Plants 69 



Summary ........ .71 



* Communicated by A. D. Imms, M.A., D.Se. 



