160 EXPEKIMEIS'T STATION KECOED. 



Some miscellaneous results of the Tvork of the Division of 

 Entomology ( U. S. Dept. Agr. , Divisioti of Entomology Bui. 22, n. 

 ser..pp. 109, Jigs. 28). — This bulletin contains the following articles: 



The tiro most abundant Pulvinarias on maple, L. 0. Iloioard (pp. 7- 

 23). — Pulvinaria innwnerahilis is native to the United States and is 

 found in all parts of the country. Its food plants are the silver-leaf 

 maple, sugar maple, box elder, red mulberry, etc. In the latitude of 

 Washington, D. C, the lice hatch the latter part of May and the early 

 part of July. From young larvpe, which hatch July first, the first 

 adult males issued on August 18. The females take up their winter 

 station upon the twigs earl}" in October. Formation of the ^^^ sac 

 begins about the middle of April. There is one annual generation. 



Among the natural enemies of this insect the author mentions the 

 English sparrow, Chilocorus hivulnerus, Hyperaspis signata, Dahruma 

 coccidivora, Coccojjhagus lecanii, C. jlavoscutelluni, Atrop)ates collinsi, 

 JEunotus lividus., Aphycus jmlvinarice, and Comys fusca. Severe prun- 

 ing is recommended soon after the hatching of the larvfe. and also 

 spraying with kerosene soap emulsion or whale-oil soap. 



Pulvinaria acericola is a native of the United States and has been 

 reported from Indiana, Iowa, Tennessee, New" York, Alabama. New 

 Jersey, and Washington, D. C. Its food plant is Acer saceharhnim. 

 The eggs hatch in June. The larvas molt twice, and late in October 

 crawl upon the twigs where they hibernate. Toward the end of Ma_v 

 the females migrate to the leaves and extrude their Qgg sac. 



The natural enemies of this insect are Hyperaspis signata, Aphycus 

 Jirdrraceus., A. flavus, Coccop)hagus fratermis, Pachyneuron altiscuta, 

 CJitloneiirus alhicornis, and Leucopis nigricornis. 



TJte insects to which the name ^''kissing hug'''' hecame applied during 

 the summer of 1899, L. 0. Hoivard (pp. 24—30). — ^This article is essen- 

 tially the same as that previously noted (E. S. R., 11, p. 561). 



An investigation to determine whether Melanoplus spretus hreeds 

 permanently in the Turtle Mountains (f North Dakota. W. D. Hunter 

 (pp. 30-37). — This article contains the itinerary of a trip made to 

 investigate this subject. The author states that there are no places 

 upon Turtle Mountains suitable for breeding groimds of this insect. 

 The Rocky Mountain locusts, which have trout)led the surrounding 

 country, probably originated in the territory lying northeast of Regma 

 toward the Big Touchwood Mountains. The observed locusts mcluded 

 Melanoplus spretus, M. Invittatus, and M. paeXrarli. At New Rock- 

 ford, N. Dak., M. spretus hatched out in consideralilo numliers, but 

 gang plows were operated with such effect as to destroy the greater 

 portion of them. The native species which have caused more or less 

 serious losses in this region are M. atlanis, M. blvittatus, M. packardi, 

 and D'lssosteira long ipennis. 



