The Rose Flea- Beetle 



{tl allien probata P'all) 



c;. F. MOZXETTE, 



ASSISTAXT ENTOMOLOGISr, OREGON AGRICULTURAL COLLEGE, 



CORVALLIS, OREGON 



INTRODUCTION 



P'rom a careful perusal of the literature it is apparent that scarcely 

 anything but the original description oi Haltica probata FaW appears 

 in print. As this species has at \arious times been reported on sev- 

 eral of our cultivated plants, and as there is some possibility of its 

 becoming destructi\e to our culti\ated roses, observations ha\e been 

 made from time to time and this paper brings together, so far as 

 possible, the recorded facts concerning the species. 



HISTORY AND DISTRIBUTION OF THE SPECIES 

 The species was first described by Dr. H. C. VM in 1910.* Mr. 

 Arthur Gibson!" mentions it as attacking leaves of strawberry plants 

 at Nelson, British Columbia. The species is referred to as Haltica 

 cvicta Lee, but after a comparison with specimens in the writer's 

 collection and later in Dr. Fall's collection at Pasadena, California, 

 I am led to belie\e that the species reported by Mr. Gibson as 

 cvicta is not cvicta but probata. It has been reported from Spokane, 

 Washington, on strawberries, and at \arious times has been reported 

 feeding on cultivated crops in Oregon. 



The species is distributed along the Pacific Coast from British 

 Columbia to California. It has been reported from Nelson in 

 British Columbia; Everett ancf Spokane in Washington; from Cor- 

 vallis, Pamelia Lake, Mary's Peak, the Three Sisters, and Josephine 

 County in Oregon; and from Santa Rosa, Belmont, Siskiyou, and 

 Trinity Counties in California. 



SEASONAL LIFE-HISTORY AND HABITS OF THE 



SPECIES 



With the approach of warm weather in the spring, when the 

 buds of the wild rose are showing their green, the little bronze 



*Transactions of llie American Entomological Society of .'\merica, \'ol. 36, pp. 

 tCanadian Entomological Circular Xo. 2. 

 152-159. 



