252 EXPERIMENT STATION RECORD. 



]feaf roller (Pernnia fcrrugana), alder flea beetle (Haltica himarrjinaia), wire- 

 worms in corn (Agriotcs niancus), elm borer, etc. 



Notes are also presented on Monodontomerus aereus and Pteromalus egrcgius 

 as parasites of the brown-tail moth. A brief statement of a spray test for 

 conifers is included. 



The principal insects injurious to agriculture during 1911—12, M. H. 

 8WENK {Bui. State Ent. Nebr., 1013, No. 1, pp. lOJ/, figs. 2-^).— This report in- 

 cludes a discussion of the results of investigations carried on during the 2 

 years. The subject matter is dealt with under the headings of grasshoppers, 

 blister beetles, corn cutworms, the variegated cutworm, the army worm, the 

 fall army worm, the corn-ear worm as an alfalfa pest, webworms (Loxostegc 

 sticticalis and the garden webwcrm), the Hessian fly, the sorghum midge 

 (Contarinia sorghicola), the wlieat-stem maggot (Mcromysa americana), the 

 chinch bug, the false chinch bug (Nysius angustatus) , the corn-root louse or 

 aphis, the corn-leaf louse (Aphis maidis), wireworms (Melanotus communis), 

 the northern corn-root worm (Diahrotica longicornis) , the timothy billbug 

 {Sphenopliorus parvulus), the stalk borer (Papaipema nitela), the wheat-root 

 aphids (Forda occidentalis and Geoica squawosa), white grubs in wheat 

 {Cyclocephnla villosa), purslane sawflies in the fall wheat {SterictipJiora 

 lineata), thrips blasting alfalfa blossoms (Thrips tabaci), the clover-seed 

 chalcis, a new leaf hopper ( Campy! e7idria, curvata ) in alfalfa fields, the clover- 

 hay worm, the western cottony grass scale {Eriopeltis coloradensis) , etc. 



New destructive insects in New York, P. J. Pabkott (Jour. Econ. Ent., 6 

 (1913), No. 1, pp. 61-66). — This paper deals with the pear thrips, the cherry 

 sawfly leaf miner (Profonusa collaris), Polydrosus impressifrons which seri- 

 ously inj'.ired the young buds of grafts of Salix caprea, apple and cherry ermine 

 moths (Yponomeuta nialincUus and Y. padellus), the false tarnished plant bug, 

 and the gipsy moth, a small colony of which moth was found at Geneva, N. Y. 



Eeport of the Dominion entomologist, C. G. Hewitt (Canada Expt. Farms 

 Rpts. 1912, pp. 173-189, pi. J).— This, the author's third annual report (E. S. R., 

 27, p. 35G), covers the year ended March 31, 1912. It deals briefly with the 

 administration of the Destructive Insect and Pest Act under the headings of 

 inspection and fumigation of imported nursery stock and field work against the 

 brown-tail moth; with insects attacking field crops, including cutworms, chinch 

 bugs, thrips, root maggots, and Colorado potato beetle: insects attacking fruit 

 trees; insects attacking forest and shade trees, including the spruce bud-worm 

 (Tortrix fumiferana) , larch sawfly (Nematns ericlif<onii), and birch leaf-mining 

 sawfly (PhlebatropMa mathesoni) ; insects attacking domestic animals and 

 man; insects affecting garden and greenhouse; apiculture; etc. 



Report of the entomologist, D. T. Fullaway (Haicaii 8ta. Rpt. 1912, pp. 

 16-SJt, pi. 1). — The author first reports upon studies made of the 3 mosquitoes 

 which occur in the Hawaiian Islands, namely, the common night mosquito 

 Culcx qiUnquefasciatus (C. fatlgans) and the 2 day mosquitoes Aedes calopus 

 (Stegomyia fasdata) and A. scutellaris, all 3 of which were introduced M'ith 

 shipping within the memory of the Hawaiiaus. From the focal points of intro- 

 duction the species have spread generally throughout the islands and in the 

 presence of the conditions requisite for their development are found everywhere 

 from the coast far up into the mountains. 



Twelve rearings of G. quinqiiefasciatus, including many hundred individ- 

 uals, gave the following periods as requisite for their devolpraent : Egg stage, 1 

 to 2 days (mostly 1 day) ; larval stage, 11 days; pupal stage, 1 to 4 days 

 (mostly 2 to 3 days), giving an average life cycle frotn deposition of eggs to 

 adult free flying mosquito of 15 days. Eight rearings of A. scutellaris, includ- 

 ing many hundreds of individuals, gave the following records : Egg stage, 5 to 



