CHRYSANTHEMUM MIDGE. 25 
(21) GrBson, A. . 
1916. Reports on insects of the year. Division No. 1, Ottawa district. Jn 46th 
Ann. Rept. Ent. Soc. Ont., 1915, p. 11-14. 
Page 14: Notes on occurrence and control. 
(22) TREHERNE, R. C. 
1916. Insects affecting agriculturists in British Columbia during the past 
years in Nor vour. Vietona, B. C2, v. ¥, no. 10, -Dec:, p-168: 
Mentions first occurrence and control. 
(23) Werss, H. B. 
1916. The more important greenhouse insects. N.J.Agr. Exp. Sta. Bul. 296. 
42 p. 
Page 15: Gives résumé of the salient points in Dr. Felt’s article contained in Jour 
Econ. Ent., v. 8, p. 267. 
(24) Borpen, A. D. 
1917. Chrysanthemum midge. In Am. Florist, v. 48, no. 1513, p. 1061-1062. 
June 2. 
Comprehensive popular article on distribution, economic importance, life history, 
and control, with illustrations. 
(25) Gipson, A. 
1917. The chrysanthemum midge. In 47th Ann. Rept. Ent. Soc. Ont., 1916, 
p. 118-120, pl. 
Comprehensive account containing life history, habits, nature of injury, and means 
of control. 
(26) Hewitt, C. G. 
1917. Report of the Dominion Entomologist for 1916. Can. Dept. of Agr. 73 p. 
Report of the Dominion Entomologist for 1917. Can. Dept. of Agr. 24 p. 
D. hypogaea contained in list of insects occurring in Canada. 
(27) Smrru, FE. D. 
1917. Chrysanthemum midge or gall fly. Jn Am. Florist, v. 48, no. 1515, June 
16, p. 1155. Illus., p. 1154. 
(28) SNoperass, R. E. 
1917. Some of the important insect pests of Indiana. Jn 9th Ann. Rept. State 
Ent. Ind., 1915-16, p. 105-230. Illus. 
Pages 149-151: Comprehensive article on injury, life history, distribution, and control 
\ of the chrysanthemum gall-fly. 
(29) Bourng, A. I. 
1918. Massachusetts. Jn United States Dept. Agr. Emergency Ent. Service, 
INo-d= May 1, p. 31. 
Mentions occurrence in Massachusetts. 
(30) Gossarp, H. A. 
1918. Ohio. Jn United States Dept. Agr. Emergency Ent. Service, No. 11. 
May 1, p. 36-37. 
Reports fairly satisfactory method of control by spraying with 40 per cent nicotine 
sulphate diluted (1-500) and fish-oil soap. 
(31) Guyton, T. L. 
1919. Nicotine sulphate solution as a control for the chrysanthemum gall midge. 
Jour. Econ. Ent., v. 12, no. 2, p. 162-164. Tllus. 
(32) Britton, W. E. 
1919. Miscellaneous insect notes. Jn Bul. 211, 18th Rept. of State Ent. for 
1918. Conn. Agr. Exp. Sta., p. 342-350, pl. 36, b. 
Pages 345-346: Briefly mentions occurrence with notes on life history and control. 
WASHINGTON : GOVERNMENT PRINTING OFFICE: 1920 
