J.ifc llistorij Xoics of Craiibevnj Lake Ilon)ui>lrra 93 



Tlie economic iiiiportcince of these insects is dependent npon 

 the abundance in which they occur, and from the amount of 

 damao'e done to a number of the trees at the Snmmer Camp it is 

 evident that in abundance they will cause very considerabk^ injury. 

 Tlie damage is of two kinds : 



The tirst, that resulting from the sucking of the sap from the 

 trees by the nymphs, a result which may be quite severe, especially 

 if the nymphs occur as has been observed, by several hundred on a 

 single small tree. 



The second kind of damage is that due to punctures made by 

 the females in depositing eggs and this damage, as indicated 

 above, depends largely upon the size of the brancli or twig whicli 

 is attacked. 



Natural Enemies 



We have not observed any natui-al enemies that could be con- 

 sidered of any special value in reducing the numljers of the insecls. 

 The ants, which are constantly in attendance npon the tree- 

 lioppers, are unquestionably seeking the secretion which they use 

 as food and, if having no other relation lo the hopper, must be of 

 service to them in keeping other insects away. AVe have observed 

 no birds feeding upon the insects nor "have we found hoppers in the 

 webs of spiders. One female was found with the contents of the 

 abdomen eaten out, but it had the appearance of having been 

 attacked by some species of fungus. However, no general attack 

 of this kind has been observed and it seems evident that the 

 natural enemies are of little account in the matter of control. 



It is difficult to suggest any control measures which could be 

 thought of as of service in any large way as applied to the forests. 

 but for individual trees under observation it would be a simple 

 matter to trim the twigs containing egg punctures during the fall, 

 winter or early spring, although the newly formed punctures are 

 too inconspicuous to be found without some careful examination. 

 From the evident inclination of the females to cling closely to 

 the trees on which they develoj:) it would seem quite possible to 

 ))eat them from small trees but in that case they would no doul)t 

 seek other trees in the same locality, and tbe plan cannot be reconiT 

 mended as of any value except for individual small ti-ees in parks 

 or private grounds. 



ASPEN TELAMONA 

 Telamona barbata Van Duzee 



This Telamona is a fairly common species on aspen, but less 

 abundant than the birch tree-hopper. Nymphs were taken July o 

 and adults (males and females) first iioted July 19th. While not 

 agreeing in all details this seems best placed in harhata, though 

 resembling reclivata, which according to Funkhouser occurs on 

 basswood. In this form the crest of pronotum has a short eleva- 

 tion at apex of crest, drops a little and runs in straight descending 



