March. 1919.] WEISS AND DlCKERSON : INSECTS OF RoSE-MaLLOW. 61 



S. I. (W. T. Davis; New York. Elizabeth, around edge of salt 

 meadow, larva June and August, adults May 20, June 5, July 5-20, 

 August 20, October 1 (Buchholz) ; (the latter record is hard to ac- 

 count for) ; Little Ferry, August 19 (Wormsbacher) ; Stone Harbor, 

 August 12 larva, May 16 adult (Daeke) ; Cape May (Laurent) ; 

 Newark and Arlington, first brood of moths, end of May and begin- 

 ning of June, second brood July and August (Rummel). Our own 

 records are Rutherford (nursery) ; Arlington (meadow and nur- 

 sery) ; Atlantic Highlands (meadow) ; Eatontown (nursery) ; New 

 Jersey. 



At the few places where the insect was noted in nurseries it was 

 not abundant enough to require remedial measures. Should such 

 measures be necessary, however, the insect could undoubtedly be con- 

 trolled by spraying with arsenate of lead. As it passes the winter in 

 the cocoon, clean culture would probably destroy many of them. 

 This is what appears to have happened in a nursery block at Ruther- 

 ford, where the insects were noted in 191 7. The fallen leaves, etc., 

 about the plants were raked up and destroyed and as a result very 

 few larvae noted the following season. 



Papaipema nitela Gn. 



During the early summer, the injury of this insect was observed 

 in a field patch of the swamp rose-mallow at Rutherford, N. J. The 

 infested shoots were not abundant, but here and there one could be 

 detected by the wilted condition of the leaves and tips. 



This insect and its life history are too well known to need much 

 comment here. It is distributed throughout New Jersey and is some- 

 times common. According to Smith (Insects of New Jersey, 1909) 

 its normal food plant is ragweed (Ambrosia trifida), but it is a gen- 

 eral feeder and may also infest dock and a number of other plants, 

 including when abundant such cultivated plants as tomato, potato, 

 corn. etc. 



The eggs are deposited in the fall; the larva bores in the stem; 

 may infest several in succession, especially if they are small : pupates 

 in the stem. In New Jersey adults occur from late July to September. 



Cultivated plants are especially liable to attack if there are numer- 

 ous weeds growing in the vicinity and this was just the case in the 

 infested hibiscus plots at Rutherford, where there were not only 



