NOTES PROM NEW HAMPSHIRE. 75 



Datana ministra Dru., without definite results, and further tests will 

 be continued on the tent caterpillar (Malacosoma americana Fab.) in 

 the spring. The effective work of this disease or diseases was quite 

 miraculous, and we had great difficulty in rearing adults on account of 

 it. Pupation took place August 10 to 12, and the moths emerged Sep- 

 tember 5 to 16. Moths were most abundant about the third week in 

 September, when they occurred in such numbers as to attract attention 

 generally, and could be seen in large numbers along the edges of 

 streams and ponds. Moths were observed as late as December 1. Ovi- 

 posit! on took place from about September 20 to the middle of October. 

 The females alight on a weed or branch of any low-growing plant, and 

 to this the egg may be temporarily attached, but it soon falls, and usu- 

 ally is merely dropped to the ground. The eggs are of a light-green 

 color. The only previous record of outbreak by this insect that we 

 have found is that by Doctor Packard in his Forest Insects, a of an out- 

 break in Pennsylvania nearly thirty years ago. The insect will hardly 

 ever be of much economic importance unless its food habits change. 

 Old residents in southwestern New Hampshire inform me that they 

 remember three or four such outbreaks of this species during the last 

 generation, but that each time the outbreak lasted but one season. 



All of the common apple caterpillars, including the tent cater- 

 pillar (Malacosoma americana Fab.), red-humped apple caterpillar 

 (Schizura concinna S. & A.) , yellow-necked apple caterpillar (Datana 

 ministra Dru.), and fall webworm (Hyphantria cunea Dru.) have 

 all been unusually abundant this season. 



The melon aphis (Aphis gossypii Glov.) also seemed to be more 

 abundant than usual in the field and is possibly the most important 

 enemy of cucumbers grown under glass. It is controlled very satis- 

 factorily by fumigating houses with " the fumigating kind " tobacco 

 powder. 



During the summer of 1904 the brown-tail moth (Euproctis chrys- 

 orrhwa L.) spread as far north as Holderness and North Conway, 

 N. H., nearly to the White Mountains. The spread for the present 

 season has not been fully determined, but nearly all the southern part 

 of the State is now infested. Although in many towns practically 

 all of the nests were gathered last winter, there is a very noticeable 

 increase this fall, and there can be little doubt" that the moths again 

 migrated northward from Massachusetts into New Hampshire as 

 they did in 1904, when they spread over 60 miles in a few days. 



The gypsy moth (Porthetria dispar L.) has, during September, 

 been found for the first time in the towns along the New Hampshire 

 coast. Every town from the Massachusetts line to Portsmouth was 

 found infested, some 49 cases being found altogether in a merely 



a Fifth Rpt. U. S. Ent. Comm., 1890. 



