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Jablonowski (J.)- Scale Insects as Vine Pests and their Relation- 

 ships with other Cultivated Plants. — Mthl^. Bull Agric. Intell. & 

 PI. Dis., Rome, viii. no. 2, February, 1917, pp. 316-317. (Abstract 

 from Kiserletilg/fi Kozlemenyeh, Budapest, xix, no. 2, 1916, 

 pp. 169-288, 31 figs.). 



The Coccids of the vine are mostly occasional pests which have 

 spread from some adjacent food-plant. The vineyards in Hungary 

 are now rapidly developing in the direction of the Robinia plantations, 

 where the Coccid Eulecanimn corni, Bch., var. robinianim, Dougl., is 

 numerous and is already beginning to appear on the vines. The 

 follo^\^ng six species of scale-insects have been recorded on the vine, 

 some of them having already appeared in Hungarian vineyards : 

 PJienacoccus aceris, Sign., rarely seen on vines, is common in Hungary 

 upon maples, wild chestnut, and fruit trees, especially apple ; Pseudo- 

 coccus adonidimi, L. (P. longispinus, Targ.), has not been found as a 

 field pest of vines, but attacks conservatory and hot-house plants ; 

 Psendococcns citri, Risso (P. brevispinus, Targ.), is indigenous to 

 Hungary, but is not an exclusive pest of the vine, and does no injury 

 to that host ; Pulvinaria betulae, L., is often found in quantities on 

 long-pruned vine canes ; Eulecanium corni var. robiniarum, Dougl., 

 infests Robinias throughout Hungary, and during autumn and spring 

 migrations may reach vines or other plants ; Eulecanium persicae may 

 reach the vine in a similar manner. The more old wood present on the 

 vines, the more the scales are lilcely to increase. The two last-named 

 species retard the formation of spring shoots. 



The best natural means of control is short pruning of the vines 

 annually. The large female scales should be crushed immediately 

 after egg-laying. Spraying is rendered difficult owing to the 

 impossibility of reaching all the insects, while the liquids hitherto used 

 (carbolineum, strong petroleum emulsions) are harmful to the canes in 

 winter, sometimes even fatal. 



Garman (H.). The Locust Borer [Cyllene robiniae) and otherlnsect 

 Enemies of the Black Locust. — Kentucky Agric. Expt. Sta., 

 Lexi^igton, Bull. no. 200, January 1916, pp. 99-135, 23 figs. 



Most of the information contained in this bulletin concerning the 

 locust borer has already been abstracted from another source [see 

 this Review, Ser. A, v, p. 398]. As a control, the author recommends 

 spraying with one part concentrated manufactured lime-sulphur to 

 eight parts water after the grubs have penetrated the bark. 



Other insects infesting the wood of locust trees include Prionoxystus 

 robiniae (the carpenter moth), Ecdytolopha insiticiana (locust twig- 

 miner) and the beetle, Agrilus egenus. The leaves are damaged by 

 Chalepus dorsalis, a black and yellow Hispid, which mines between the 

 two cuticles of the leaves, C. nervosa, and a number of moths which 

 mine or skeletonise the leaves, including Gracilaria lespedezifoliella, 

 Phyllorycter {LithocoUetis) ostensackenella, P. robiniella, Gelechia 

 pseudacaciella, and Eudamus tityrus. Fourteen species of puncturing 

 insects which suck the sap from the leaves or young twigs are also 

 mentioned. 



(C390) B 



