72 BULLETIX 416, U. S. DEPARTMENT OF AGEICULTUEE. 



Theobald, F. V. 



1908. Notes on insect, fungus, and other pests. In Jour. Bd. Agr., v. 15, no. 1, 



pp. 45-47. London. (Mite control [Tetranychus], p. 47.) 



1909. The insect and allied pests of the hop. In Jour. Bd. Agr., v. 16, no. 7-8, 



pp. 555-571, 617-628, 5 pis. London. (Tefranychus telarius, p. 624.) 

 Titus, E. S. G. 



1905a. Red spider on cotton. U. S. Dept. Agi-. Bur. Ent. Bui. 54, pp. 87-88. 



{T. gloveri.) 

 1905&. The cotton red spider {Tetranychus gloveri Bks.). IT. S. Dept. Agr. Bur. 



Ent. Circ. 65. 5 pp., 2 figs. 

 Tkagakdh, Ivar. 



1915. Bidragtill Kannedomen om Spinnkvalstren (Tetranychus Duf.) Meddel. 



N:r 109 fran Centralanstalten for forsoksvasendet pa jordbruksomradet . 



Ent. avdelningen Nr. 20. 50 pp., 20 figs. Stockholm. 

 YOLCK, W. H. 



1903. Sulphur sprays for red spiders. Cal. Agi-. Expt. Sta. Bui. 154, 11 pp.. '?, 



figs. 

 1913. The control of red spiders. Mo. Bui. Cal. State Com. Hort., v. 2, no. 3-4, 



pp. 356-363. 



W.\SHBURN, F. L; 



1892. Insects injurious to young fruit trees. Oregon Agr. Expt. Sta. Bui. 18. 

 16 pp.. 14 figs. {Tetranychus telarius Linn., p. 10.) 

 Watt, G.. and Maxn, H. H. 



1903. The pests and blights of the tea plant, ed. 2, 429 pp., 24 pis., 44 figs. 

 Calcutta. {Tetranychus hioculatus, var. references, see index.) 

 Webster, F. M. 



1899. The chinch bug. Experiments with insecticides. Ohio Agr. Expt. Sta. 

 Bui. 106, pp. 235-256, 5 figs. (Carbon bisulphid against Tetranychus 

 telarius, pp. 254-255.) 

 Weldon, G. p. 



1909. Two common orchard mites. The brown mite; the red spider. Col. Agr. 



Expt. Sta. Bui. 152, 12 pp.. 7 figs. 



1910. Life history notes and control of the common orchard mites Tetranychus 



bimaculatus and Bryobia pratensis. In Jour. Econ. Ent., v. 3, no. 5, 

 pp. 430^34. 



1910. Some insects and mites attacking the peach in Colorado. Col. Agr. Expt. 



Sta. Bui. 169. 20 pp., 4 figs. (The red spider [Tetranychus hitnacula- 

 tus], pp. 12-13.) 

 Wilson, H. F. 



1911. Notes on the red spider attacking cotton in South ( 'arolina . In Jour. Econ. 



Ent., V. 4, no. 3, pp. 337-339. 



WOGLUM, R. S. 



1909. Fumigation investigations in California. U. S. Dept. Agr. Bur. Ent. Bui. 

 79, 73 pp.. 28 figs. (Citrus red spider [Tetranychus mytilaspidis Rilev]. 

 p. 11.) 



WOODWORTH, C. W. 



1902. The red spider of citrus trees. Univ. Cal. Agr. Expt. Sta. Bui. 145, 19 pp., 



5 figs. 



1903. EntomologJ^ In Univ. Cal. Agr. Expt. Sta. Rpt., 1901-1903, pp. 104-110. 



(Red spider remedies, p. 105.) 

 Worsham, E. L. 



1909. Insects of the year in Georgia. In Jour. Econ. F.nt., v. 2. no. 3. pp. 



206-210. {Tetranychus gloveri, p. 209.) 



1910. The cotton red spider. Ga. Expt. Sta. Bui. 92, pp. 135-141, 5 col. pis. 

 Zacher, Freidrich. 



1912. Information concerning the genus Tetranychus and its enemies (trans- 



lated). Kaiserlichen Biologischen Anstalt fiir Land- und- Forstwiils- 

 schaft, Nr. 12, p. 3. 

 1915. Die "rote Spinne." Gartenflora, Heft 11 u. 12, Juni 15, 1915, pp. 171-182. 

 (Includes a new treatment of the genus Tetranychus.) 



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