144 



STATE BOARD OF ACilUCL LTURE. 



clover seed and is >lijilitly more llian oiu'-sixli'ciitli of nii iiicli in l«'ii;;lli. iiiid hlack in 

 color. As to its life history and liahits, and llic rt-nu-dit's tliat will control it, very 

 little is known yet. The sjiiTimons obtained eanie ont on July 12 in quantity, 

 crawling out in swarms on tlit* barn lloor from a hca]) of nowly tlircshed seed. 



Prof. A. D. Hopkins of the Wcsl \'iri,nnia i^xpcrimciit Station says* that the 

 insects winter in the clover heads and that they work in the developing' seeds of 

 common red clover as well. Before an\' advice is <^iven for the control of this insect, 

 it will be necessary to determine the number and dates of the broods and considerable 

 more about its life history than is known now. Tt is ho)i(Ml that durinir the cominj^ 

 summer we mav be able to learn more. 



20. JUMPING UAK-CJALL. 

 {Neuroterus q-saltatoritis, H. Edw.) 



Everybody is familiar with the oak-galls or oak-apples to be founel growing on the 

 leaves and twigs of oak trees. Many kinds or species occur in Michigan and each kind 

 is made by a ditTeront insect, usually by a member of the family of insects known as 

 Cynipidae. One of these galls or oak-apples is so diflerent from all the others and so 

 curious in itself that it well merits a brief description.! 



The galls in question were obtained from Kalanuizoo on June 30, 1898, and were 

 sont us by Mr. Hurlburt. Later the same species was found by the writer on the 

 College grounds. The minute galls were to be found in great numbers in tiny pits 

 on the under side of the leaves of the burr-oak (Qnrrcns macrocarpus) . The form 

 is shown by the accompanying figure (Fig. 20), which is greatly enlarged. The 



Fig. 20. Jum])ing Oak-fia'l, S'litrolfriiaq-saltdtofiiiit. (Original.) rioin a plidtdinimeograph. 



* Prop. 10th Ann. Meeting of Am. Assn. of Econ. Kiit. I'ltb. in iJull. IT. New Series Dept. of Agr. Div. 

 of Ent. ]S98, ]). 45. 

 t 'fliis insect was kindly iilentified for me by Dr. L. (). llowanl of rlie Dept. of .\gr.. Washington, D.C. 



