84 A MANUAL OF DANGEROUS INSECTS. 



SoRAUER, p. Ilandbuch der Pflanzenkrauklieiten, 3d ed., 1913, vol. 3, p. 282. 



NtJssLiN, Otto. Leitfaden der Forstinsektenkunde, 2d ed., pp. 422-424, figs. 



356, 357. 



Dasyneura laricls F. Lw. 



(Larch P>ud Gall Midge. Itomdid3e.[Oecidomyid8e]; Diptera.) 



Host: Larch. 



Injury: Attacks i«uds, forming galls. 



Description and biology: Eggs laid at l)ase of needle clusters. The larvae enter 

 the dormant nuds forming a gall-like swelling, and overwinter as very small larvse. 

 They ^evelop in the ])uds through the year. Pupate in cocoon in autumn. The 

 attacked ! uds die. 



Distribution: Europe. 



SoRAUER. P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, pp. 454, 455. 



J. OTHER INSECTS ATTACKING LARCH (LARIX). 



HEMIPTERA. 

 Apbididee. 



Lichnus liTich Koch, a plant louse; Europe; attacks needles and young shoots. 



COLEOPTERA. 

 Anobiidse. " 



Dn/ophilus pusillus Gyllonlial; Europe; attacks buds. 



Ipidse. 



Cry phalus inter medius Ferrari; Germany. 



LEPIDOPTERA. 

 Hyponomeutidse. 



ATgyTesthialxvigatella'3..&ch..; Germany; attacks young shoots. 



L. BIBLIOGRAPHY OF PRINCIPAL WORKS CONSULTED. 



Bargagli, p. Rassegna Biologica Rincofori Europe!, 1883-1887. 



Fernald, M. E. Catalogue Coccidaj of the World, Mass. Exp. Sta., bull. 88, 1903. 



GiLLANDERS, A. T. Forest Entomology, 1908. 



Hess, R. Der Forstschutz, vols. 1, 2, 1898. 



LiNDiNGER, L. Die Schildlause (Coccidae), 1912. 



NOssLiN, O. Leitfaden der Forstinsektenkunde, 2d ed., 1913. 



SORAUER, P. Handbuch der Pflanzenkrankheiten, 3d ed., vol. 3, 1913. 



Stebbing, E. p. a Manual of Elementary Forest Zoology for India, 1908. 



Stebbing, E. p. Indian Forest Insects. Coleoptera., 1914. 



Tragardh, IVAR. Sverigosskogsinsekter, 1914. 



CORN; MAIZE. 



{Zca mays Linnseus. Family Graminese.) 



Although the greater part of our commerce in corn is in the nature of exports, there 

 are always likely to be imports of seed corn from various parts of the world. Corn 

 is probably American in origin, and consequently there are few foreign pests not 

 already widely distributed in the country. 



A. CORN INSECTS LIKELY TO BE IMPORTED. 



^ Araecerus fasciciilatus De Geer. 

 (Coffee-bean Weevil. Family Anthribidae; Coleoptera.) 



Hosts: This weevil is polyphagous, feeding in dry food products and drugs, china- 

 berries (Melia azedarach), dead cotton bolls, cornstalks, etc. 

 Injury: Very injurious to food products and also to live corn. 



