12 Farm Insects observed in the Aherjfsticjjth Area 



Mangold Fly, Pegomyia hyoscyami, Panz. (P. belae, Curt.). 

 The Mangokl Fly. I have never seen young Mangolds attacked, 

 nor any appreciable damage done, but a few brown blisters are to be 

 seen now and again. I have failed to obtain the adult fly. 



PlOPlIlLA L'ASEI. 



I observed this fly in hundreds in one farm house, and obtained the 

 larvae from bacon and hams that were hanging from the ceiling of the 

 kitchen. These maggot-like larvae can "skip" freely, and do not seem 

 to harm the bacon to any great extent, since no foul or decayed place 

 could be found even where the larvae were feeding. 



LlPURA AiMBULANS, L. 



This minute Apterous insect was observed in November, 1915, in 

 large numbers upon leeks in a farm garden near Borth. The leeks had 

 been very severely attacked by the Onion Fly (P. cefeloruni). Some 

 adjacent carrots were also attacked, but were not seriously injured. 

 The same pest was obtained damaging the seeds of French Beans 

 sown in an Aberystwyth, garden in the Spring of 1916. Sminthurus 

 luteus, Lubbock, was fairly common upon field nuishrooms at Crosswood 

 in September, 1916. Several other related species were observed in 

 small numbers. 



Ants. 



Time did not allow of a full study of many groups of subsidiary 

 interest, and I am chiefly indebted to Mr F. S. Wright of the Zoology 

 Department, Aberystwyth, for the following identifications of Ants 

 collected during the course of the Survey. 



The nomenclature is that of Donisthorpe, British Ants, 1915. 



1. Monomorium pharaonis, Jj. 5. F.fusca,\j. 



2. Myrinica laevinodis, Nyl. 6. F. rufibarbis, F. 



3. M. rugiiiodis, Nyl. 7. F. ficea, Nyl. 



4. For)nica riifn, L. 



All the above records refer to workers. 



F. fusca seems to be the most widely distributed, and has been taken 

 from sea level to 1 000 feet. 



ill. pharaonis was only obtained from the town of Aberystwyth 

 where it was causing annoyance in a bakery and also in a tobacconist's 

 shop. 



F. rufa is confined to woodlands containing an admixture of Coni- 

 ferae. 



