OF WASHINGTON. 217 



HETEROPTERA FOUND ON OX-EYE DAISY (CHRYSANTHE 

 MUM LEUCANTHEMUM). 



By OTTO HEIDEMANN. 



It is generally known that the common ox-eye daisy ( Chrys 

 anthemum Icucanthemunt} has a great attraction for many of our 

 insects. The plant flowers from early May until late in July. It 

 grows so profusely on some fields that, seen from the distance, 

 they appear to be snow-covered. In sweeping such fields early 

 in May, I was greatly interested in finding Leptopterna dola- 

 brata Linn., a European species of the family Capsidae, in very 

 great numbers, and in all stages of development. They are hardly 

 to be detected on the plant, as the larva and pupa resemble in 

 coloration the stem and leaf. Thus it seems probable ^^.Chrys 

 anthemum leucanthemum, which is a native of the Old World, 

 may be the food-plant of this common Capsid. Unfortunately I 

 was unable to find the eggs in spite of careful research. In 

 former years I had noticed the appearance of the insect regularly 

 on the same plant, but never did it occur so plentifully as at this 

 season. This common Capsid has probably two broods, because 

 I found the young larva very early in May, and also in the month 

 of July. After this the insect disappears in our locality. Be 

 sides this one species, I met with other heteropterous insects on 

 the daisies, which are either attracted by the color of the flower, 

 or visit the same in search of prey, as I found to be the case with 

 Triphleps insidiosus Say and Phymata fasciata Gray, both 

 hiding between the petals of the flower. I swept quite frequently 

 during the months of May and June, and until late in July, when 

 the daisies began to wither. As a result of my collecting I can 

 record the following species of Heteroptera : 



Neottiglossa sulcifrons Stal. Poeciloscytus basalis Rent. 



CEbalus pugnax Fab. Calocoris rapidus Say. 



Hymenarcys nervosa Say. Agalliastes suavis Reut. 



Trichopepla semivittata Say. Stiphrosoma stygica Say. 



Harmostes reflexulus Stal. Halticus uhleri Giard. 



Corizus lateralis Say. Episcopus ornatus Reut. 



Corizus nigristernum Sign. Oncotylus decolor Fall. 



Nysius angustatus Uhl. Apocremnus robustus Uhl.MS. 



Cymus angustatus Stal. Triphleps insidiosus Say. 



Jalysus spinosus Say. Phymata fasciata Gray. 



Leptopterna dolabrata Lin. Coriscus ferns Lin. 



Collaria oculata Reut. Coriscus punctipes Reut. 



Lygus pratensis Lin. Sinea diadema Fab. 

 Oncognathus binotatus Fab. 



