CHRYSANTHEMUM MIDGE. 22 
experiment station or to -the Bureau of Entomology, United 
States Department of Agriculture. 
The California Experiment Station (18) recommends the practice 
of growing the bulk of the chrysanthemum crop under cloth as a satis- 
factory means of preventing the attack of the gall-fly. 
As a further preventive measure, it is recommended that cuttings 
be dipped in the following solution at the time they are taken: 
Necoiaine sulphate 40 per COML. sss 50.0 22 2 a sca oe part 1 
"VES ED Ee ps aes En ae age te en IE ie eee a parts.. 800 
MAHAN yOHOA DS ee ee ee eee ounce per gallon.. 4-1 
Another satisfactory method of securing chrysanthemum cuttings 
free from the midge when the previous season’s stock has been infested 
is to plant the stocks in benches or cold frames directly after the 
season’s crop has been removed. This should then be followed by 
thorough treatment with a mixture consisting of equal parts of dry 
or air-slaked lime and tobacco dust. It is advisable to keep all new 
growth covered with the mixture until further operations in the 
spring. 
LITERATURE CITED. 
(1) Perris, E. 
1870. Histoire des insectes du pin maritime. (Diptéres). Jn Ann. Soc. Ent. 
Fr., v. 10, p. 135-232. 
Page 177: States that he observed cecidomyiid larve in a gall formed by the union 
of the leaves of the central shoot of the terminal rosette of Leucanthemum vulgare. 
(2) Von BercENnstTAMM, J. E., and Low, P. 
1876. Synopsis Cecidomyidarum. Jn Verh. zool.—bot. Gesell.in Wien, v. 26, 
p. 90, no. 516. 
Identical with (1). Reference taken from E. Perris. 
(3) Low, F. 
1885. Beitrage zur Naturgeschichte der Gallenerzeugenden Cecidomyiden. 
In Verh. zool.—bot. Gesell. in Wien, v. 35, p. 483-510. 
Pages 488-489: Original description of male, larva, egg, pupa, and gall. 
(4) Rtpsaamen, E. H. 
1892. Die Gallmiicken des kéniglichen Museums fiir Naturkunde zu Berlin. 
In Berl. Ent. Zeitschr., v. 37, p. 319-412. 
Page 375: Records synonymy and gives list of 19 species. Among them appears 
(as No. 7) Cecidomyia hypogaea Fr. L6w, as mentioned by him in reference (3). 
(5) Kierrer, J.-J. 
1897. Synopse des Cécidomyies d’Europe et d’Algérie. Jn Bull. Soc. d’Hist. 
Nat. de Metz, Cah. 20, 2nd ser., v. 8, p. 1-64. 
Page 21: Mentions occurrence of subterranean galls on C. atratum and C. leucan- 
themum. 
(6) 
1897. Rectifications synonymiques. Jn Bul. Soc. Ent. Fr., 1897, no. 16, p. 
261, par. 6. 
(7) 
1900. Monographie des Cécidomyides d’Europe et d’Algérie. Jn Ann. Soc. 
Ent. Fr., v. 69, p. 180-472. 
Pages 351 and 353: Mentions iniury to chrysanthemums caused byRhopalomyia hypo- _ 
gaea F. Low. , 
