451 



Felt (E. P.). Thirty-second Report of the State Entomologist on\ 

 Injurious and other Insects of the State of New York, 1916. — 



New York State Mm. BuU., Albany, N.Y., no. 198, 1st June 1917, 

 276 pp., 8 plates, 51 figs. [Received 16th August 1918.] 



This valuable report deals comprehensively with the more important 

 insect pests of 1916, including such fruit tree pests as Cydia pomonella,. 

 L., Rhagoletis pomonella, Walsh, Taeniothrips inconsequens, tJzel {pyn, 

 Dan.), Malacosoma ameriaxna, F., Psylla pyricola, Forst., Asjyidiotus 

 perniciosus, Comst., and others. 



Shade-tree insects include the sawfly, Caulacampus acericaulis, 

 MacG. (maple leaf- stem borer), Mycetohia divergens, Wlk. (bleeding 

 tree maggot), ChaitopJwrus lyropida, Kessler (Norway maple Aphid),, 

 recorded in former reports as C. aceris, and Eulecaniuni magnoliarum, 

 Ckll. (magnolia scale). Forest pests include Scolytus (Eccoptogaster) 

 quadrispinosus (hickory bark-beetle), Sinoxylon hasilare, Say (red- 

 shouldered limb borer) and Neoclytus erythrocephalus, F. 



Numerous garden pests are recorded, the lesser known species 

 including Papaipema purpurifascia, G. & R. (columbine borer), 

 Epargyreus tityrus, F. (silver-spotted skipper) attacking locust trees 

 and wistaria, Achatodes zeae, Harr. (spindle worm), attacking elder and 

 also reported from maize, and Zophodia grossulariae, Pack, (gooseberry 

 fruit worm). 



Greenhouse pests include Callopistria floridensis, Gn. (Florida fern 

 caterpillar), which ruined over 3,000 ferns belonging to one grower, 

 Boston and maiden-hair fern being the species preferred. This 

 moth breeds practically throughout the year. The use of poisons 

 being apt to injure the plants, hand-picking is the measure recom- 

 mended, but above all, every precaution against the introduction 

 of the moth should be taken. Neocerata (Dasyneura) rJwdopkaga, Coq. 

 (rose gall midge) is frequently the cause of serious loss, attacking 

 the yoimg leaf or flower buds and causing malformations. Breeding 

 is continuous from May to October, only two weeks being required to 

 complete the Ufe-cycle. Eggs are laid in the developing rose tips. 

 As the repeated fumigations necessary to destroy the larvae are apt 

 to endanger the plants, it is suggested that the greenhouse should be 

 thoroughly cleared out during the winter when the insects are dormant 

 in the soil, or thoroughly sprayed with a contact insecticide such as 

 kerosene emulsion. Diarthronomyia hypogaea, Lw. (chrysanthemum 

 gall midge) is a recently introduced pest that is rapidly becoming 

 widely disseminated. It has been fully described in a previous report 

 [see this Review, Ser. A, iv., p. 445]. 



Grass and clover insects mclude the white grubs, Lachnosterna 

 (Phyllophaga) fusca, Frohl., which in some cases greatly injured potato 

 crops. Planting of crops should be timed so that white grub injury 

 will be at the minimum. The grubs have been largely held in check 

 during 1917 by the AsiHd, Promachus Jitchii, O.S. Hypera {Phytonomm) 

 meles, F., is a weevil found on red clover, in association with Tychius 

 picirostris, F. Early cutting of clover for hay prevents serious injury 

 by these insects. 



Miscellaneous insects that have been troublesome include Silvanus 

 surinamensis, L. (saw-toothed grain beetle), a common species in 

 cereal preparations and found occasionally in large numbers in grain 



