C>4 REPORT OF THE STATE ENTOMOLOGIST 1 92 1 



Buffalo and vicinity and here likewise there was evidence of material 

 injury. 



The lightning leaf hopper (Ormenis pruinosa) was 

 observed in small numbers on Forsythia near Cold Spring Harbor. 

 It was also received from a number of localities in the State and 

 appears to have been unusually abundant. Ordinarily it can not be 

 considered as particularly injurious. 



The spring of 1920 was cold, wet and therefore unusually favorable 

 for root maggots and as a consequence there was considerable dam- 

 age by both cabbage and onion maggots. 



The taking of the large southern, rare moth, Thysania zen- 

 obia Cram., at Rochester, September 26, 191 9 by Richard 

 Lohrmann is worthy of special mention. 



Notes concerning some of the more important or interesting species 

 are given below. 



FRUIT TREE INSECTS 



Rose leaf beetle (Nodonota puncticollis Say) . This 

 is one of the smaller, common leaf-feeding beetles greatly resembling 

 in general appearance the more active " flea beetles" and only occa- 

 sionally comes to notice on account of somewhat marked injuries. 

 It occurs generally throughout New York State during June and 

 July and is recorded as common on roses, blackberry, raspberry and 

 red clover. Some years ago Dr W. E. Britton, state entomologist 

 of Connecticut, recorded injuries by this species to the foliage of 

 Japanese chestnut trees. 



This beetle was evidently unusually abundant in the State last 

 year and in some cases at least spread from its more common food 

 plants to others, since the special field assistant of the Dutchess 

 county farm bureau, O. C. Plunkett, reported finding it working on 

 the fruit of young apples June 19, 1920, and in one case the injury 

 amounted to 10 or 20 per cent of the fruit. The affected apples 

 had irregularly eaten areas, the epidermis being entirely devoured 

 and the pulp exposed. The damage was so serious that the apples 

 would certainly have been badly distorted if they had not dropped 

 before they were half grown. The same species on apples was 

 received June 19th from F. L. Pelton, Potsdam. 



Injury similar to the above was observed in the vicinity of Cham- 

 bersburg, Pa., by J. R. Stear (Jour. Econ. Ent. 13:433, 1920). 



Outbreaks of this character are probably conditioned to a consid- 

 erable extent upon the occurrence of other food plants near apple 



