368 



cannot be immediately communicated to salad because all winged 

 individuals return to the poplar and the apterous individuals cannot 

 migrate to neighbouring plots. The practical value of crop rotation 

 is therefore evident. Chermes (Dreyfusia) piceae and C. (D.) nusslini 

 were taken from Abies nordmannimia, while the galls of C. ahietis 

 were found on Picea excelsa, and those of Prociphilis nidificus on the 

 roots of silver fir. To protect nursery plants against the last-named 

 they should be lifted and their roots dipped for 5 minutes in a 5 per 

 cent, soap solution. P. nidificus is a migratory species, its alternative 

 host being the ash (Fraximis), and if ash trees near the nursery are 

 found to be infested the affected leaves must be cut off and burnt. 

 A closely related Aphid, Procijjliilus bumeliae, was noticed on the 

 roots of silver fir. Infested firs should be uprooted and burnt. Trioza 

 alacris from laurel and TypJdocyba rosae from rose were also recorded. 

 The bug, Stephanitis pyrioides {rhododendri), was recorded for the first 

 time in Switzerland on rhododendrons near Zurich ; this species is a 

 well-known rhododendron pest in England and Holland and is said 

 to be a native of Japan. The under-side of the leaves should be 

 sprayed with a 2 per cent, soap solution or — in the case of very 

 valuable plants — fumigation with hydrocyanic acid gas may 

 resorted to. The injuriousness of bugs, such as Lygus, has been under- 

 estimated ; they often occur on geranium, fuchsia and sage. The 

 larvae and pupae of Cydia {Grapholitha) pactolana were taken from 

 Picea ])ungens argentea. Elder and ash were infested by caterpillars 

 of Gracilaria (Xanthospilapteryx) syringella. Brotolomia meticulosa 

 was bred from a caterpillar infesting chrysanthemum. 



Injurious Diptera included Phorbia {Chortophila) brassicae (cabbage 

 fly) ; AntJiomyia radicum on beans ; A. polygoni on Polygonum ; 

 Hylemyia antiqua in onions ; LasiojMra rubi on raspberry ; Monarthro- 

 palpus buxi on box ; and Dasyneura schneideri on Arabis albida. 



Among the Coleoptera were the cabbage pests, Ceuthorrkynchus 

 sidcicollis, Phyllotreta nndidata and Psylliodes chrysocephala ; the 

 willow beetle, Phyllodecta vulgatissima ; Agriotes larvae in potatoes ; 

 Melolontha melolontha larvae on rose ; the raspberry beetle, Byturus 

 fumatus ; Rhynchaenus (Orchestes) fagi on beech ; and Epilachna 

 globosa on carnations. Larvae of the saw-fly, Pteronus (Nematus) 

 ribesii, defohated gooseberry. 



Information was also sought for regarding the clothes moth, 

 Trichophaga tapetzella {tapetiella), Eristalis tenax, and Chlorops 

 Jlavifrons, all of which were troublesome in houses. 



Schneider- Orelli (0.). Weitere Beitrage zur Kenntnis des Kleinen 

 Frostspanners, Operophthera {Cheimatobia) brumata. [Further 

 Contributions to the Knowledge of Cheimatobia brumata.] — 

 Separate from Landwirtschaftl. Jahrbuch der Schweiz, 1917, 

 [sine loco\ pp. 454-463. [Received 12th June 1918,] 



The first portion of this paper details experiments with banding 

 against Cheimatobia brumata and contains a number of tables showing 

 the captures obtained and again proving the need for banding all 

 trees in an orchard if fully satisfactory results are wanted. The 

 second part deals with the influence of temperature on C. brumata, 

 giving information that has alreadv been abstracted [see this Review, 

 Ser. A, V, p. 269]. 



