ECONOMIC ZOOLOGY ENTOMOLOGY. 955 



the beets, and upon the temperature of the surface soil, together with the 

 temperature and moisture of the surrounding air. Proposed remedies include 

 the use of kerosene ennilsion (1 to 5), hopi)er-dozers, and other mechanical 

 devices. Early planting and in some sections early and fre<iuent irrigation are 

 recommended. Seven other si)ecies of Eutettix are known to have definite food 

 plants related to the sugar beet and several more the food plants of which are 

 not known will probably be found to have similar habits. Brief notes are given 

 on the species of this genus alrejtdy known to occur on the beet, which, con- 

 sidered in order of their importance, are as follows : E. stroM, E. scitula, E. 

 scniimtda, E. clarivida, E. insana, and E. stricta. AgaUia sanguinolenta, A. 

 cincrca, A. bigcloviw, A. quadripunctata, A. novella, and Empoasca sp. are also 

 briefly noted. 



A second kind of curly leaf, in which the leaves remain smooth but show 

 numerous pale spots and the edges turn down, and in which the injury appears 

 to be confined to the leaves attacked, is reported to have been found quite com- 

 monly in California. This injury appears to be due to the Empoascas. 



The sugar-cane borers of Behar, M. Mackenzie and H. M. Lefroy (Agr. 

 Jour. India, 3 (1908), No. 2, pp. 104-12^, pis. 3; Internal Sugar Jour., 10 

 (1908), yo. 119. pp. 5.'i0-.j.'i4) ■ — Observations and biological data are given 

 upon the lepidopterous borers of sugar cane. The white moth (Scirpophaga 

 auriflua) and the black-spotted moth {S. monostigma) are described as shoot 

 borers. The common moth borer (CJiilo simpler), the gold-fringed moth borer 

 (C*. auricilia), the pink borer {Nonagria uniformis), and the green borer 

 {Aneraatia abfutcUa) are given as side borers, and Pohjocha saccharella is 

 described as a root borer. 



Papers on deciduous fruit insects and insecticides. The grape-leaf skel- 

 etonizer. P. R. Jones (U. S. Dept. Agr., Bur. Ent. Bui. 68, pt. 8. pp. 77-90, 

 figs. I>). — The author has studied Ilarrisana americana and here presents 

 an account of its life history, including descriptions of its life stages, thus sup- 

 plying many points whicli have been lacking. 



The pest is considered a native species since it feeds ui)on the Virginia 

 creeper and wild as well as domestic varieties of grapes. It appears to be 

 widely distributed, having been rei)orted from Canada and Mexico. Studies 

 made at Washington, D. C, have shown that there are not 2 full generations in 

 that vicinity. The moths from overwintering pupjie appear during the latter 

 part of May or chiefly during the first 10 days of Jime. In 1908 eggs were 

 first found on June 11, at which time a few had hatched. The average length 

 of tlie egg stage was found to be 7.92 days, of the larval stage 40.;") days, of 

 the pupal stage 14. S days, and the life of the moth .3.5 days. The minimum 

 length of tlie complete life cycle was found to be 53 days. The chalcidid 

 Prrilnmpuft pl<iliig<tHt(r, a brachonid Glijpta pantries sp., and an ichneumon 

 Limncria sp., are recorded as natural enemies. Ilandpicking or the application 

 of an arsenical when the larvae appear is recommended as a remedy. 



A complete bibliography is appended. 



Sawfly larvae in apples. R. L. WraJSTER (Jour. Eron. Ent.. I (1908). No. 5, 

 pp. 310, 311). — Larvie of Ta.rontis nigrisoma are reported to have been found in 

 apples sliipiied from New York State. 



Papers on deciduous fruit insects and insecticides. The peach-tree bark- 

 beetle, II. F. Wii.so.N (V. S. Dept. Agr., Bur. Ent. Bui. (iS. pt. 9. pp. 91-lOS. pis. 

 2, figs. 3). — The Hnroau (»f Entomology of this Department has conducted, in 

 cooperation with the Ohio Station, an Investigation of I'lihrotrihis liniinaris, 

 a pest which has become a source of considerable injury in uortheru Ohio. 



82394— No. 10—09 5 



