FOREST SERVICE RESEARCH NOTE NE-258 



A J ??- 9 ' 1978 



ISprtheastern 



Experiment Statioii 



FOREST SERVICE, U.S. DEPARTMENT OF AGRICULTURE, 370 REED ROAD, BROOMALL, PA. 19008 3 



S3 



A TRAP FOR TREE-INHABITING CERAMBYCIDS 



GO 



JIMMY R.GALFORD 



Research Entomologist 

 Northeastern Forest Experiment Station, 

 Delaware, Ohio 



Abstract. To determine species and numbers of insects visiting a tree, a paper 

 trap for cerambycids was designed and tested on locust borers, Megacyllene 

 robiniae (Forster), and red oak borers, Enaphalodes rufulus (Haldeman), 

 under plantation and forest conditions. Test results showed that the trap 

 could be used successfully to capture locust borers but it requires some 

 modification for red oak borers. Several other cerambycid species were also 

 captured in the trap. 



Most traps for treeclimbing insects are designed 

 as barriers to repel the insects. These barriers of 

 sticky bands are not useful for determining species 

 and numbers of insects visiting a tree because the 

 insects usually are repelled or manage to escape. 

 Compton and Flint (1927) found that locust 

 borers, Megacyllene robiniae (Forster), were read- 

 ily caught in Tanglefoot 1 bands on trees but were 

 not killed and soon freed themselves of most of 

 the substance. 



Studies I am now conducting on cerambycid 

 pheromones required a trap that would capture 

 the locust borer and the red oak borer, Ena- 



'The use of trade, firm, or corporation names in this 

 publication is for the information and convenience of 

 the reader. Such use does not constitute an official 

 endorsement or approval by the U. S. Departent of 

 Agriculture or the Forest Service of any product or 

 service to the exclusion of others that may be suitable. 



phalodes rufulus (Haldeman), so that the approxi- 

 mate number of beetles visiting a tree could be 

 determined. Following is the description of a trap 

 that I designed and field tested in September and 

 October of 1976 on locust borers, and in June and 

 July of 1977 on red oak borers. 



MATERIALS AND METHODS 



The trap was constructed as follows: circles of 

 20, 25, 30, 35, 40, and 50 cm diameter were cut out 

 of Insect Trap Paper, .016 grade, polyethylene 

 coated 2-sides (Griff Associates, Fort Washing- 

 ton, Pa. 19034). 1 A circle that was 20 cm in dia- 

 meter made a tray trap for a tree that was 10 cm 

 dbh. Each increase of 5 cm in circle diameter made 

 a tray that would fit a tree 2.5 cm larger. Two cir- 

 cles were stapled together to provide more rigidity 

 for traps 35 cm in diameter and larger. 



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