﻿Life Ilistorij Kates of Cranhcrry Lahe llomopicra 93 



Tin* economic importance ol" these insects is dependenl upon 

 the al)iin(lance in Avliieh they occur, and from the amount of 

 damaf^e done to a nnmber of the trees at the Summer Cam]) it is 

 evident that in abundance they will cause very considerable injury. 

 Tlie damage is of two kinds : 



The first, 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 lai'gely upon the size of the branch or twig which 

 is attacked. 



Natural Enemies 



We have not obsei-ved any natural enemies that could be con- 

 sidered of any special value in reducing the numbers of the insects. 

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

 hoppers, are unquestionably seeking the secretion which they use 

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

 service to them in keeping other insects away. We 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 develop it would seem quite possible to 

 beat them from small trees but in that case they would no doubt 

 seek other trees in the same locality, and the plan cannot be recom- 

 mended as of any value except for individual small trees 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 •'» 

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

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

 rasembling redivata, which according to Funkhouser occui-s 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 



