372 



the shoot. Infested canes should be cut out and burnt before 1st 

 May. Byturus unicolor, Say, feeds on raspberry leaves, ovipositing on 

 the flower-buds, and the larvae live on the developing fruit. As the 

 larvae pupate in the ground, thorough cultivation will generally keep 

 the insect in check. Paris green and lead arsenate have given fair 

 success as stomach poisons, though neither is entirely satisfactory. 

 In small areas, hand-collection of the adults is recommended. 

 Oecanthus nigricornis, Wlk. (snowy tree cricket) injures raspberry 

 canes and shoots of shrubs and trees by the punctures made in 

 ovipositing. Injured canes or twigs should be pruned and burnt in 

 winter or early spring. Anthonomiis signatus. Say (strawberry 

 weevil) greatly damages the June crop by cutting off the flower-buds 

 after ovipositing in them. The most satisfactory control is rotation 

 of crops. Only one or two crops should be taken from a bed and the 

 new bed should be at some distance from the old one. Ploughing 

 under the old beds is said to destroy mo^t of the hibernating weevils. 

 Burning over the beds after the crop is gathered also has some effect. 

 Zophodia grossulariae, Pack, (gooseberry fruit-worm) has but one 

 generation in a year ; the larvae when full-grown drop to the ground 

 to pupate. Thorough cultivation and the burning of rubbish will 

 usually keep this pest in check. 



Weiss (H. B.) & Dickerson (E. L.). The Early Stages of Corythucha 

 pergandei, Heid. (Hem., Horn.). — Entom. News, Philadelphia, xxix. 

 Jio. 6, June 1918, pp. 205-209, 2 figs. 



Corythuca pergandei is widely distributed in New Jersey, where it 

 is found on alder {Ah^vs ghitinosa) and birches {Betula nigra, B. lutea 

 and B. populijolia). The adults hibernate under fallen leaves and in 

 crevices of bark and appear in late May or early June, depositing eggs 

 on the under-sides of leaves in the pubescent tissue in the axils formed 

 by the main rib and its side branches. From 1 to 5 eggs were found 

 in each axil, all being completely hidden. The nymphs after hatching 

 feed in colonies on the under-sides of the leaves, causing discoloration. 

 Adults of the first brood have developed by mid-July. From 5 to 6 

 weeks are required for a complete life-cycle and during the last days 

 of August or early September adults of the second generation have 

 developed and these hibernate. On account of the e:^tended oviposi- 

 tion period, all nymphal stages are found feeding together. The egg 

 and the various nymphal stages are described. 



Wilson (H. F.). A New Species of Macrosiphum (Aphididae, Horn.). 



— Entom. Neivs. Philadelphia, xxix, no. 6, June 1918, pp. 230- 

 231, 1 fig. 



Macrosiphum rhododendri, sp. n., is described, apterous, alate and 

 pupal forms being taken in great numbers on leaves of Rhododendron 

 californic'um in the coast region of Oregon. 



Emergency Entomological Serviee.-^i^wiom. News, Philadelphia, xxix, 

 no. 6, June 1918, pp. 234-236. 



Various reports received by the United States Department of 

 Agriculture are included in this heading. Cyla« formicaritis (sweet 



