1020] ECONOMIC ZOOLOGY — ENTOMOLOGY. 159 



W'iHk with the gipsy moth eontinns the results of previous years, showing 

 th:it tlie i'fiKs •!<> not ondur* very late holding of the winter water. Experi- 

 ments show that hlackleaf 40 used at the rate of 1 part to 4(X) parts of water 

 will kill the worms in their early stages. The hlack-head fireworm was found 

 to he controlled hy the use of hlackleaf 40, 1 part to 400 parts of water, and it 

 has rei)laced arsenate of lead for controlling this pest. "Treatment of the 

 spittle insect, the gipsy moth, and the first brood of the tireworm with the 

 same application of hlackleaf 40 is practicable on bogs that are winter flowed 

 but not reflowed. The use of arsenate of lead with the hlackleaf 40 in spraying 

 for the tireworm and the gipsy moth is probably advisable, for the arsenate 

 whitens the spray and so marks where it is applied, thus reducing the liability 

 of leaving areas unspraye<l. It also adds to tlie insecticidal value of the spray, 

 and, as shown elsewhere in this report, gives it a fungicidal value when it 

 is used on Early Black vines. Whale-oil soap is preferable to resin fish-oil soap 

 for use with hlackleaf 40, especially if arsenate of lead is added, for the 

 arsenate and the resin soap make a burning combination." 



The eggs of the cranberry fruitworm were parasited by Trichogramma 

 mimita to the extent of from 83 to 89 per cent on dry bogs and from 29 to 88 

 per cent on those with \\'inter flowage in 1917, and from 36 to 89 per cent on 

 dry bogs, and from to 15 per cent on flowed bogs in 1918. The results show 

 that the fruitworm may be smothered by heavy sanding, but that the sand 

 must he applied after rnipntion, which is completed the middle of June, to be 

 effective. The black cutworm appeared in August on a large part of a bog 

 which had been flowed from early .Tuly to July 10. 



Distribution of shade tree insects in 1919, W. O. Hollister {Jonr. Econ. 

 Ent., IS (1<J20), No. 1, pp. H3-146).— This reports/ upon the distribution east of 

 the Mi-ssissippi and north of the Mason and Dixon Line of the more important 

 insect enemies of shade trees. 



An invasion of British Guiana by locusts in 1917, G. E. Bodkin and L. D. 

 Cleake (Bui. Ent. Research, 9 {1919), No. 4, pp. 341-357, figs. 8).— The senior 

 author discu.sses the previous locust infestation of British Guiana, the infesta- 

 tion of 1917, and the campaign conducted. An account of the life history of the 

 Schistocerca .species concerned is given by the juaior author. 



The Porto Rico mole cricket in South Carolina and Florida, F. H. Chit- 

 tender- {.Jour. Econ. Ent., 13 {1920), No. 1, pp. I.'f9, 150).— The occurrence of 

 ficapteriscus ricimts Scud, in South Carolina and Florida is recorded. 



Three pink and green aphids of the rose, E. M. Patch {Maine Sta. Bui. 

 282 (1919), pp. 205-248).— The author has found that there are at least three 

 species of plant lice belonging to the genus Macrosiphum that are common 

 on the rose in Maine, and that each of these has two distinct color varieties, 

 one pink and one green. 



M. rosw proper, the first of these, maintains a continuous residence upon the 

 rose and is not known to migrate. .1/. solanifoUi, tlie second, deposits its eggs 

 upon the rose in the fall, where it may be found in heavy colonies during the 

 spring and early summer, when it migrates for the most part to a great variety 

 of .summer plants, though it may, besides, keep up its connection with the 

 rose during the summer. It is a source of serious injury to the potato in 

 many parts of the United States, due to its direct attack and also indirectly 

 I as a carrier of mosaic disea.se as reported by Schultz et al. (E. S. R., 42, p. 47). 

 The third Is a species here described as new under the name M. pseudorosce, 

 I and to which the present account chiefly relates. The species was first collected 

 from golden ragwort (Scnecio aureus) July 3, 1918, together with \f. solanifoUi 

 from which it is easily separated by its black antenna and cornicles. Further 



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