66 EXPERIMENT STATION RECORD. 



the l>eetles from Imrrowing into the hark. Revere winter pruninu; and l)nrning of the 

 twigs will destroy the eggs and hiljernating insects. 



A mealy Img attacking quince trees (pp. 128-130), a species of Dactylopius, was 

 found injurious and its ha)>its were studied. A quince orchard examined on April 27 

 showed that nearly all the trees were infested. The adult mealy hugs were noticed 

 making cocoons and laying eggs on June 28. When the orchard was examined, on 

 Septemher 26, the numbers of the species had materially diminished. Brief descrip- 

 tions of the insect in all its stages are given. As remedies the author suggests 1 or 2 

 applications of whale-oil soap, 1 lb. to 5 gal. of water, in the spring and scraping the 

 trunk and large limbs during the winter, and painting with a strong solution of 

 whale-oil soap. 



Apple leaf miners {Ornix prunivorella) (pp. 131-135) were first reported from 

 Brockport in 1900. The young larvae of this species feed upon the parenchyma, 

 usually on the upper side of the leaf. The epide)'mis of the leaf is uninjured, and a 

 mine is produced which causes the distortion of the leaf. Before pupating the cater- 

 pillars line their retreats with a heavy coating of silk thread. A brief description is 

 given of the caterpillars. Arsenical or other sprays would have little effect in the 

 case of this species. Since it passes the winter in the leaves, the insect may be held 

 in check by destroying the fallen leaves or plowing them under. Tischeria malifolU- 

 ella is reported as very conmion in the leaves of apple orchards at Albion and Geneva. 

 The mines are somewhat trumpet shaped in the upper side of the leaf. 



The tarnished plant bug (p. 135) is said to have caused consideral)le damage to 

 peaches. The bugs were watched by means of a hand lens and could be seen to 

 puncture the fruits. The bugs usually confine their attacks to the under side of the 

 fruit, making large numbers oi punctures with their beaks. Shortly afterwards drojis 

 of sap exude from the punctures and the skin begins to wither. The peaches ulti- 

 mately become deformed. 



A few fruit-tree foes, F. H. Hall and Y. H. Lowe {New York State Sia. Bid. ISO, 

 popnlar cd., pp. 8, pla. ,9). — This is a popular summary of the above bulletin. 



Insect notes, A. L. Quaintance {Georgia Sta. Rpt. 1900, pp. 361-371, pi. 1). — 

 The author gives brief notes on harlequin cabbage bug, leaf-footed i)lant bug, tar- 

 nished plant bug, squash bug, Oicadula c.eitiosn, boUworm, grape-leaf folder, imported 

 cabbage worm, cabbage plusia, and codling moth. 



The pickle worm is reported as having been injurious to squash, cucumber, canta- 

 loupe, and watermelon, the vines of which were more or less injured, especially 

 those of the cantaloupe and squash. The fruit of the pumpkin was not injured. In 

 order to test the value of squash as a trap crop for the larvje, 4 rows of summer squash 

 were planted at equal intervals across a 1-acre field of cantaloupes. From June 19 

 until July 17 squash flowers were picked off, and the larvse infesting them were 

 counted. In all, 1,640 larvae were thus captured, and the cantaloupes were prac^ 

 tically free from pickle worms until July 14. Experiments with arsenites were 

 again unsuccessful. Cantaloupes were thoroughly sprayed with Paris green, 1 lb. to 50 

 gal. of water, and with Disparene, 6 ll)s. to 25 gal. of water. The pickle worm was not 

 affected Vjy the latter and only slightly by the Paris green. 



Short notes are also given on the melon worm, squash vine borer, Diatrsea saccha- 

 ralis, striped cucumber beetle, Ceratoma trifurcata, Colorado potato beetle, false 

 potato beetle {Doryphora juncta), plum curculio, and Allorlnna nitida. An articleon 

 Dinbroiica 12-panctata is reprinted from BuUetm 26, Division of Entomology of this 

 Department (E. S. R., 12, p. 860). 



Bugs injurious to our cultivated plants, (). Lugger {Minnesota Sta. Bui. 69, 

 pp. 259, pis. 16, figs. 200).— This bulletin contains a general account of the anatomy, 

 life history, habits, and classifications of the order Hemiptera, including lice, Heterop- 

 tera, and Ilomoptera. Brief biological antl economic notes are given on the more 

 imj)! )rtant species of the variou-i families of these su))orders. The bulletin constitutes 

 a compendium of practical information upon these insects. 



