828 CONNECTICUT EXPERIMENT STATION REPORT, I907-I908. 



2. Spray the leaves with poison as soon as they have opened, 

 if their shot-hole appearance shows that the beetles are there 

 in abundance, and the under sides of the leaves should be coated 

 about June ist to destroy the larva or grubs. 



3. When, later in the season, the yellow pupae appear on 

 the trunks of trees and the ground beneath, kill them with a 

 spray of kerosene emulsion or by sweeping them up and burn- 

 ing or soaking with kerosene. 



The first and third measures should be taken by each house- 

 holder, church or social organization, at individual expense. 

 The spraying, which is difficult and expensive if the trees are 

 large, can only be done by concerted action of the town or 

 borough authorities. For extensive spraying work power sprayers 

 are desirable, but small elms or a few large trees can be treated 

 successfully by means of a hand-pump of barrel size. The 

 "Niagara gas sprayer" in operation is shown on Plate LVI. 



THE GREEN CLOVER WORM A PEST OF BEANS. 

 Plathypena scabra Fabr. 



Late in June the writer noticed that the bush and pole beans 

 in his garden were being eaten by some insect, and during the 

 first half of July complaints were received from five or six 

 different persons who reporte'd that their beans were being 

 devoured. These complaints were mostly from around New 

 Haven, but included one from Meriden. Similar injury to beans 

 was observed upon the station grounds, and in several gardens, 

 and was reported from the eastern portion of Massachusetts and 

 from Virginia. 



Though in the South there are several insects feeding upon 

 the plant, it is quite unusual for beans in Connecticut to be 

 attacked by any leaf-eating insect that noticeably defoliates them, 

 and at first we supposed this pest to be Ogdoconta cinereola 

 Guen., which Chittenden mentions* as a green striped caterpillar 

 which feeds upon bean leaves. 



Identity Established. 

 From a lot of caterpillars placed in breeding cages on July 

 14th, some of which began at once to pupate, about twenty 



* Insects Injurious to Vegetables, p. 113. 



