457 



larvae in them bv burnin.s with a torch. Spraying with 3 lb. paste 

 lead arsenate (or 1| lb. powder) to 50 U.S. gals, water will prevent 

 defohation of the trees. 



Halisidota caryae, Harris (hickory tussock moth) was more abundant 

 than for many years, associated with Henierocampa hucostigma (white- 

 marked tussock moth) and Halisidota tessellaris, S. & A. Halisidota 

 maculafa occurs less frequently. These moths have a wide range of 

 food-plants, including oak, elm, maple, walnut, hickory, willow, 

 poplar, etc. Adults appear in June and July and eggs are deposited 

 on the under-sides of the leaves, where the larvae feed. Spraying 

 with 3 lb. paste lead arsenate to 50 U.S. gals, water is recommended 

 as an efficient control. 



Datana integerrima, G. & R. (walnut caterpillar) was numerous on 

 black walnut, butternut and hickory, the larvae eating away the 

 leaves during August and feeding in clusters near the ends of branches. 

 Pupation takes place in the ground. There is only one brood in a 

 year. The larvae are parasitised by Meteorus communis, Cress. The 

 lead arsenate spray described above should be used. The conspicuous 

 clusters of caterpillars can easily be removed. Datana ministra, 

 Drury (yellow-necked caterpillar) is a closely allied species common on 

 apple, especially on young trees. Injury and remedial measures are 

 the same as for D. integerrima. Schizura concinna, S. & A. (red- 

 humped caterpillar) is another species defoliating young apple trees. 

 The caterpillars are parasitised by an Ichneumonid, Campoplex 

 {Ameloctom(.s) oedemisiae, Ashm. Lead arsenate spray is recommended 

 against it. 



Insects injuring stored food-products in Connecticut include the 

 grain beetles, Tenebrio molitor, L., T. obscurus, F., Tenebrioides 

 manritanicus, L., Bruchus pisormn, L., B. obtectus, Say, B. quadri- 

 macidatus, F., Sitodrepa panicea, L., Tribolium confusum, Duv., 

 T. ferrugineum, F., Silvanus suriruimensis, L., Calandra grafiaria Jj., 

 and C. oryzae, L. Flour and meal moths include Plodia inter punctella, 

 Hbn., Ephestia J:iihniella, Zell., and Pgralis farinalis, L. Grain moths 

 include Sitotroga cerealella, Oliv., and Tinea granella, L. Insects 

 occasionally attacking food are Trogoderma tarsale, Melsh., Anfhrenus 

 verbasci, L., Attagenus picetis, Ohv., Dermestes lardarius, L., Necrobia 

 rufipes, ¥., Tyroglyphus spp., Lasioderma serricorne, F., Piopkila casei, 

 L.. Trodes divinatoria. Miill., cockroaches and ants. A brief account 

 is given of the most important of these pests. Most of them may 

 be destroyed by raising the temperature to r20°-130° F. for 5 or 6 

 hours. Air-slaked lime applied to seeds when placed in storage wiU 

 prevent most of the damage by pea and bean Bruchids [see this 

 Review, Ser. A, v, p. 208]. Half a cupful of carbon bisulphide to a 

 barrel of grain will destroy all insects. The liquid should be placed 

 on the top of the container, which should then be tightly closed for 24 

 hours or more. Fumigation with hydrocyanic acid gas is described, 

 but is not recommended for use by inexperienced persons. 



Miscellaneous insects causing some trouble during the year included : 

 A sawfly, Janus abbreviatus, Say, in twigs of Lombardy poplar ; 

 this species has not previously been reported from Connecticut. 

 Another sawfly, Itycorsia sp. , occurred on nursery plants of Austrian 

 pine. A Longicorn, Monochamus {Monohammus) titillator, F., was 

 foimd tunnelling in white pine, A leaf-roller, Desmia funeralis, 

 (C504) o 



