REPORT OF STATE ENTOMOLOGIST. I99 



Pyrethrum powder has produced good results when thoroughly 

 applied. Some of our common spiders prey upon it to quite 

 an extent. On the whole, however, it is a most difficult pest to 

 get rid of and many dahlia and aster growers have given up in 

 disgust and left the business for other plants that are not so 

 infested. 



FOREST CATERPILLARS. 



During the past season there was a very phenomenal outbreak 

 of what was popularly termed the "forest caterpillar." 



From the 9th of July until the loth of August letters and 

 specimens flooded the office, from parties who were "driven to 

 their wits end" regarding an unknown "green worm" that was 

 "destroying the hardwood growth." 



THE SADDLED PROMINENT, Heterocompa guttivitta. 



In the majority of cases this proved to be the so called "green 

 worm." Owing to the great demand of the regular duties of 

 the bureau it w^as practically impossible to investigate the con- 

 ditions in many of the reported sections, but sufficient trips were 

 made to different sections in the infested district to fully deter- 

 mine the nature and extent of the damage. On thousands of 

 acres of hardwood growth the trees were stripped bare. This 

 belt extended from the New Hampshire line at Fryeburg to 

 beyond Skow^hegan. 



Reports were received from the following places : Alfred, 

 Auburn, Augusta. Baldwin. Bethel, Bowdoin, Bowdoinham, 

 Bridgton. Brownfield, Buckfield, Chelsea. Chesterville, China, 

 Clinton, Cumberland Center, Denmark. Dryden, East Sumner, 

 Fairfield. Farmington. Fayette, Fryeburg, Frye's Island, Gar- 

 diner, Gorham. Hallowell, Harrison, Hartland. Hiram, Milton 

 Mills, X. H., Alt. Vernon, Monmouth, Naples, Northport, 

 North Waterford, North Windham, Oakland, Palermo, Read- 

 field Depot, Sebago, Sidney, South Livermore, South Vassal- 

 boro, South Waterboro, Skowhegan, Steep Falls, Wales, Water- 

 boro, ^^^aterford, Waterville, Webb's Mills, Weeks' Mills, 

 W^est Baldwin, West Durham, Wilton, Winslow, Winthrop and 

 Wi seas set. 



