400 



STATE HORTICULTURAL SOCIETY, 



black. The head is green with black eyelets. Length one and one fourth 

 inches when full grown. The moth is slightly smaller than that of the 

 spotted cut worm (Fig, 16) and is marked with light gray and dark brown 

 with a silvered hook extending into the center of the front wings. Three 

 broods each season are reported in Illinois by Mr. Coquillett. 



REMEDIES. 



The only remedy suggested is cold water. In his rearing experiments 

 with the larvae, Mr. Coquillet found the leaves when wet produced a 

 disease of violent scouring that soon killed the caterpillars. The speci- 

 men reared by myself seems to be an exception to the rule as the weather 

 was exceptionally wet up to nearly the time of the appearance of the 

 moth. Perhaps it was owing to confinement that the water produced such 

 an effect. Should this not prove sufficient, the pyrethrum powder spoken 

 of under the zebra caterpillar no doubt will be effectual. 



THE CELERY BORER {Phlyctcenia ferrugalis, Hbn.). 



Oedee LEPIDOPTERA. 



Family PYRAUSTID^. 



Greenish translucent caterpillars, about one inch long, that were taken both boring in the stems and 

 feeding on the leaves. 



The habits of this species seem quite variable. It both bores in the 

 stems and feeds on the leaves. While at Kalamazoo the 26th of August 



one of these caterpillars 

 was found burrowing on the 

 inside of the celery stalks 

 close to the base. The 

 crown had been eaten out 

 and the plant nearly eaten 

 up. The outer leaf stalks 

 were channeled at the base 

 and nothing left except the 

 shell on the outer side. An 

 immense amount of frass 

 was left for so small a 

 feeder. No other plants 

 ^ near this one seemed to 



FiQ. 17.— The celery borer. A, moth with the wings spread; B, i -i i i. i r\ 



same with the wings folded and at rest; C, top view of the full Uave been mOleSteQ. Un 

 grown caterpillar ; D, the pupa. Twice natural size— (original). ^^iQ same dav in other fields 



larvae that appeared to be the same were taken quite plentifully either 

 rolled up or sewed in between celery leaves. These caterpillars fed on the 

 leaves around them and did not molest the stems. Both lots were placed 

 in separate breeding jars, but from this on, all acted and fed alike. On 

 the 28th the most of them webbed up between the leaves, or cut chunks of 

 leaves out and pasted them to the jars. Others webbed up a day or two 

 later. The first moths appeared the 14th of September. The borer 

 appeared the next day and proved to be the same species as the others. 



REFERENCES. 



For the identification of this and the following species of small moths 

 and references to them, I am indebted to Prof. C. H. Fernald, our well- 

 known authority on the Micro-lepidoptera. He writes me that to his 

 knowledge the species has never been bred in this country before. In an 



