339 



Britton (W. E.). Eighteenth Report of the State Entomologist of 

 Connecticut for 1918.— ^Con/i. Agric. Expt. Sta., New Haven, Bull, 

 no. 211, 1919, pp. 249-352, 16 plates. [Received 5th June 1919.] 



This report includes brief accounts of the various branches of 

 entomological work undertaken during the year under review. The 

 86 nurseries of Connecticut were all inspected during August to October. 

 Attention is called to the great prevalence during 1917 and 1918 of 

 Lejndosa'plies ulmi, L. (oyster-shell scale), which caused the destruction 

 of much nursery stock, though Aspidiotvs pemiciosus (San Jose scale) 

 was less numerous. A list of the certified nurseries is published. 



The following pests were found on imported nursery stock during 

 1917-1918 • a cocoon of Acronyda sp. on rose stock from France ; 

 Alphitophagns hifasdaius, Say, on rose stock from England ; Aniso- 

 dadylus binotatus, F., among evergreens from England and in moss 

 around roses from Ireland ; Chionaspis salicis, L., in packing from 

 Scotland ; cocoons of Diprion, probably D. similis, on rose stock from 

 France ; Emphytus cinctus on fruit-tree stocks from France and on 

 rose stocks from England, Holland and France ; a leaf- miner on box- 

 wood from England; Ofhins fulvipennis, F., among evergreens from 

 England ; Lcpidosaphes vlmi on boxwood from Holland ; Pieris 

 (Pontia) rapae, L., on rose stock from France ; soft scale on boxwood 

 from Holland ; Stenolophus skrimshiramts, Schrank, among evergreens 

 from England ; woolly aphis \Eriosoma lamgermn] on apple roots from 

 France ; and Coleopterous larva in soil around rhododendrons from 

 Holland. 



The inspection of apiaries was continued and records are given of 

 the occurrence of European foul-brood and American foul-brood in 

 the State. 



Cydia (Laspeyresia) mohs!-a, Busck (oriental peach moth) was 

 recorded from Connecticut in the report for 1917 [see this Review, Ser. 

 A. , vi, p. 456], and as a result of scouting throughout the State, larvae 

 were found only in the one locality in which they were discovered 

 in 1917, though twig injury that might be due either to this pest or to 

 Anarsia llneatdla (peach-twig borer) was found in each of the four 

 southern or shore counties. The information concerning the life- 

 history, habits and remedial measures against this moth have already 

 been noticed [see this Review, Ser. A., \i, p. 373, and vii, p. 254]. 

 Anarsia lineatella, Z. (peach twig-borer) has been discovered during 

 these investigations to occur in Connecticut to an extent not previously 

 realised, being more abundant along the coast than iiiland. In 

 California, where extensive tests have been made, it is found that 

 A. lineatella may be controlled by spraying with lime-sulphur or 

 miscible oils just after the buds begin to swell, and this treatment 

 may be continued until the first blossoms appear. Pyrausta nuhilalis, 

 Hbn. (European corn borer) had not, at the time of writing this report, 

 yet appeared in Connecticut [see however this Review, Ser. A, vii, p. 

 284], but quarantine regulations have been issued against it. Cerotoma 

 trifurcata, Forst. (bean leaf beetle) was recorded in 1918, for the first 

 time in many years, as injuring beans in Connecticut. In cases of 

 severe infestation 1 oz. lead-arsenate paste or |- oz. dry powder in 

 1 U.S. gal. water should be sprayed on the plants, but care must be 

 taken not to spray the beans if nearly ready for harvest. Monophadnus 

 {Monophadnoides) rubi, Harr. (raspberry sawfly) has been collected 



