3$ FIRST REPORT ON ECONOMIC BIOLOGY. 



leave the tree, and in May are often found straying about. Pupation 

 takes place in the spring of the third year. The silken cocoons are 

 covered with bits of wood, and lie just within the entrance of the 

 tunnels. The moth emerges about a month after pupation. 



FIG. 18. Section of Poplar tree damaged by Goat Moth larvae. 



PREVENTIVE AND REMEDIAL MEASURES. 



On emerging from the pupal condition the moths are often seen 

 resting on the trees, and during May the caterpillars are also often 

 found on the bark ; in both cases they should be destroyed. The 

 pupae may be hooked out of the entrances of the tunnels in June or 

 July with a piece of strong wire, bent at one end. 



For preventing the moth depositing her eggs in the crevices of 

 the bark, Mr. Theobald 1 recommends smearing the trunks over in 

 May with a mixture of clay and paraffin and soft soap, made into a 

 thick paint, and smeared thickly around the base, and all over the 

 trunk up to eight feet. This mixture is said to answer much better 

 than the clay and cow-dung generally used. 



12nd Rpt. Econ. Zool., 1904, p. 83. 



