26 DECIDUOUS FEUIT INSECTS AND INSECTICIDES. 



rounded, Avithoiit horn-like processes, but with a pair of slender 

 seta?. This stage has not hitherto been described, the description 

 given by Weed being evidently that of the pupa of some other 

 species. (See fig. 9, e, /.) 



The adult or moth. — The description given b}^ Clemens is as fol- 

 lows : " The head and antennfie shining, dark brown, face ocherous. 

 Fore wings uniform, shining, dark brown with a purplish tinge, 

 slightly dusted with pale ocherous; cilia of the general hue. Hind 

 wings dark gray; cilia with a rufous tinge.'' (See fig. 9, c/, 6.) 



FOOD PLANTS. 



In his original description Clemens gives the food plant as apple. 

 Chambers states that he bred it from leaves of diiferent species of 

 haw (Crataegus), sweet-scented crab {Pyrus coronaria) , blackberry 

 (Ruhus villosus), and raspberry {Ruhus occidentalis), and adds that 

 it probably mines other species of Rosacea\ Later Clemens says 

 that this species, as well as certain others, feeds indifi'erently on 

 leaves of Crataegus, Prunus, and Mains. 



In 1873 Messrs. Frey and Boll described Tischeria wnea, bred from 

 Rubus villostis, and Tischeria roseticola from Rosa Carolina. In the 

 Cincinnati Quarterly Journal of Science Chambers adds the dew- 

 berry {Ruhus canadensis) to the food plants of Tischeria mcdifoliella^ 

 and does not consider T. cenea of Frey and Boll, from blackberry, dis- 

 tinct from T. malifoliella; he regards as belonging to this species 

 the specimens bred from all the species of Rubus, Crataegus, and 

 Pyrus. He also doubts the distinctness of T. roseticola. However, 

 in a later publication, '' Tineina and Their Food Plants," Mr. Clemens 

 recognizes the two species of Frey and Boll above cited, and as food 

 plants of T. incdifolieUa gives Crata?gus, Pyrus coronaria, and Pymis 

 malus, omitting as food plants species of Prunus, Rubus, and Rosa, 

 assigning the two latter as food plants of amea and roseticola, re- 

 spectively. The distinctness of the three species was again recog- 

 nized by Chambers in his Index to the Tineina of the United States 

 and Canada, and more recently by Doctor Dyar in his " List of N. A. 

 Lepidoptera.''' " 



Finally Mr. Pettit notes serious damage to blackberries from 

 2\ malifoliella at the South Haven substation in Michigan, and 

 states that the insects seem to breed in the neighboring apple trees 

 and come to the blackberries from them. However, in the absence 

 of definite breeding work and the critical comparison of adults thus 

 secured, it will be best to follow the evident conclusions of Chambers 

 and Dyar, and limit the food plants of T. malifoliella to species of 

 Crataegus and Pyrus. During the present season (1907) the insect 



" Bui. r>2, U. S. Nat. Museum, 1902. 



