1913 



ENTOMOLOGIOAL SOCIETY. 



103 



two red nymphs were found on this occasion, but they were very rare indeed. Eroni 

 the former nymphs brought to Guelph, six adults representing two species were 

 reared. Three of these were sent to Mr. Van Duzee who kindly identified them 

 as Paracalacoris colon. Say and Neurocolpus nubilus Say. Four out of the bIx 

 belonged to the latter. 



This spring I thought that even though neither Mr. Baker or I had time to 

 devote to a careful study of the life history of these insects, it might be possible 

 by occasional trips to make some interesting and perhaps valuable observations on 

 their habits and work. Accordingly on June 12th, when the calyces of the apples 

 had just closed, Mr. Baker and I visited the orchard and found a good many 

 of the nymphs feeding as in previous years on the fruit and tender part of the 

 twigs. To our surprise many red nymphs were also seen, especially on the shoots 

 that grew up from the crown of the trees. Xone of these red nymphs, however, 



Fig. 39. — Section of deformed apple, 

 showing small brown areas caused 

 by feeding of yoiung Plant Bugs 

 (natural size). Photo taken June 

 25th. 



were seen on or close to the fruit; but that this species (Lygidea mendax) as well 

 as Eeterocordylus malinus does feed on young fruit in addition to the leaves, 

 has been shown by Crosby. 



On June 25th, we again made a hurried trip to the or-chard. The fruit at 

 this time averaged about half an inch in diameter and the nymphs had almost 

 entirely ceased to feed on it, though tw^o or three were doing so. They evidently 

 now much preferred the tips of the shoots around the base of the tree. The red 

 nymphs here were about as numerous as the other species, but owing to their 

 brilliant color were more easily seen. Forty or more nymphs were taken to 

 Guelph, and twenty-two adults reared from them. All the red nymphs- 

 four in number — proved to be Lygidea mendax, the False Eed Bug, and the rest 

 Neurocolpus nubilus and Paracalacoris colon, six belonging to the former and 

 twelve to the latter; many of the red nymphs had died, being apparently less 



