372 



Brittox (W. E.), Walden (B. H.) & Lowry (Q. S.). Experiments 

 in controlling a Mite {Tarsonemus ■pallidus, Banks) injuring Snap- 

 dragon Plants in the Greenhouse. — Rept- Connecticut Agric. Expt. 

 Sta., 1914, New Haven, 1915, pp. 176-179, 1 plate. 



The follo^^'ing experiments were made in attempting to control 

 Tarsonemus pallidus, a mite causing the curhng up of the leaves of 

 snapdragon plants. Some plants which had been cut back were 

 sprayed with nicotine solution " Black Leaf 40," using 5 cc. to 1 gal. 

 water with naphtha soap added in the proportion of 4 lb. to 100 gals, 

 water, or with " Fir-tree Oil," using 6 fluid oz. in 2 gals, water. 

 Others, which had been less infested, were sprayed wdth " Black Leaf 

 40," at the rate of 5 cc. to 1-| gals, water, or vdih " Fir-tree Oil," 

 using 4 fluid oz. in 2 gals, water. Spraying was repeated three times 

 at intervals of a week. It was found that either of the above insec- 

 ticides at the greater strength will control the mite if four apphcations 

 are made at intervals of a week. It is possible that T. pallidus attack- 

 ing Chrysanthemum can be controlled in the same way, if it is present 

 on the buds before they open. The same species has also been reported 

 on Cyclamen. 



Caterpillars feeding on Greenbriar. — Rept. Connecticut Agric. ExjJt. Sta.^ 

 1914, New Haven, 1915, pp. 183-185. 



The larvae of Trachea (Hadena) turbidenta are recorded on Smilax 

 rotundifolia. A description of the larva and adult is given. Though 

 the insect cannot be called injurious, in those locahties of New Jersey 

 in which the native host plant is cultivated, certain 'control measures 

 are necessary. Spraying with lead arsenate would prove effective. 



Entomological Features of 1914. — Rept. Connecticut Agric. Expt. Sta., 

 1914, New Haven, 1915, p. 186. 



During the spring of 1914 canker worms {Palaeacrita vernata) and 

 tent-caterpillars (Malacosoma) were abundant. The Colorado potato 

 beetle {Leptinotarsa decemlineata) was scarce, on account of the numbers 

 of its Dipterous parasite, Doryphorophaga (Phorocera) doryphorae. 

 The most important features of the year were the gipsy moth invasion 

 and the army worm outbreak. The elm-leaf beetle, which formerly 

 was confined to sea-level, has become destructive at higher altitudes. 



Miscellaneous Insect ^otes. —Rept. Conuecticut Agric. Expt. Sta., 1914, 

 New Haven, 1915, pp. 187-198, 5 plates. 



The butterfly, Polygonia interrogationis, has been abundant on elm 

 in 1914 ; other food-plants are hop, blackberry and Hnden. The 

 insect hibernates as an adult. Eriocampoides (Caliroa) limacina, 

 the cherry or pear slug, can be controlled by lead arsenate spray. 

 Several cases of injury to the tulip tree by the Coccid, Toumeyella 

 liriodendri, have been reported. Spraying the dormant trees ^\'ith 

 Hme-sulphur is the best control measure. Asterochiton packardi, 

 the strawberry whitefly, can be treated in small plantations by spraying 

 the underside of the leaves vnth " Black Leaf 40 " ; in large areas. 



