153 



The storehouse beetles, Ptinus fur, L., and P. tectus, Boield., were 

 both observed, the former among seeds of henbane, the latter in a 

 store of casein and also eating holes in carpets. 



Other notes on some of the pests mentioned in this report were 

 given in the previous one [R. A.E., A, v, 487]. 



Gillette (C. P.) & List (G. M.). Eleventh Annual Report of the State 

 Entomologist of Colorado for the Year 1919. — Office State Ent., 

 Fort Collins, Circ. 28, August 1920, 64 pp., 10 plates, 6 figs. 

 [Received 26th January 1921.] 



An amendment has been passed to the Colorado Horticultural 

 Inspection Act, for the purpose of extending the duties of the State 

 entomologist, to provide a quarantine on poisonous plants and other 

 objects, and to provide for the control of the alfalfa weevil {Hyper a 

 variabilis, Hbst.] and make an increased appropriation to support 

 the work. An account is given of the inspection activities in the 

 various counties, and of the formation of the Western Plant Quarantine 

 Board, which consists of representatives from various States, to dis- 

 cuss problems in connection with quarantine and inspection. Certain 

 recommendations are suggested to improve existing arrangements. 



The pests recorded include: — Aspidiotus perniciosiis, Comst. (San 

 Jose scale), which continues to infest neglected orchards ; A. ancylus, 

 Putn. (Putnam scale), infesting pear, cherry and other fruit trees, 

 and elms ; Pitlvinaria inntimerabilis, Rathv. (cottony maple scale), 

 on maple and box-elder trees in cities, which, when not sufficiently 

 controlled by natural enemies, should be treated with kerosene 

 emulsion ; Eriocampoides limacina, Ratz. (pear slug), on cherry 

 trees, which is easily controlled by lead arsenate sprays ; Eriophyes 

 pyri, Pag. (pear-leaf blister- mite), in apple orchards, where lime- 

 sulphur sprays should be used just before the buds open in the spring ; 

 Lepidosaphes ulmi (oyster-shell scale), on ash trees, lilac, and willows ; 

 grasshoppers, which have caused unusually severe outbreaks, the chief 

 species being Melanoplus bivittattis, M. atlantis, M. differ entialis and 

 AI. femitr-rubrtim ; Gossyparia spuria. Mod. (elm scale), for which 

 elms should be sprayed with miscible oils ; Cydia {Carpocapsa) ponio- 

 ■nella, L. (codling moth) [i^. yl.f., A, viii, 527] ; Loxostege stidictalis 

 (beet webworm) on sugar-beets and some garden crops, successfully 

 controlled by sprays of any of the following substances to 50 U.S. gals, 

 water — 2 or 4 lb. Paris green, 2\ lb. zinc arsenite, 4 lb. magnesium 

 arsenate, calcium arsenate or lead arsenate ; Lycophotia margaritosa 

 {Peridroma saucia, Hb.) (variegated cutworm), which it seems possible 

 to control by poisoned bran mash, parasites reared from pupae of 

 this moth being the Diptera, Gonia seqtiax, Will, Archytas analis, 

 F., Linnaemyia comta. Fall., and Chaetogaedia monticola. Big., and 

 the Hymenoptera, Ephialtes sanguineipes. Cress., Dibrachys boncheanus, 

 Ratz., and Meteorus mellinervus, Vier. ; Tortrix {Archips) argyrospila, 

 Wlk. (fruit-tree leaf- roller), on elms, box-elder, and fruit trees, sprays 

 of miscible paraffin oil giving better results than asphaltum miscible 

 oil ; and bark-beetles, such as Scolytus rugulosus, on cherry, peach 

 and other fruit trees. 



Work on the alfalfa weevil was continued on the same lines as in the 

 previous year [R.A.E., A, viii, 128]. The cHmatic conditions and 

 nature of the infestation in 1919 are recorded, and an account is given 

 of scouting operations. The weevil parasite, Baihyplectes curailionis. 



