Notes on Xorth American Species of Nepticula. 



89 



Described from one specimen bred from an upper side 

 serpentine mine on red elm, Uluius 

 fiiha Michx.. at Cincinnati. The mine 

 increases very gradually in breadth 

 and is pale brown in color with a 

 ^lineoi x.ieucostigma. couspicuous dark browu line of frass 

 through the middle. The cocoon is ovoid, dark brown. 



The distinguishing characteristics of this species are the 

 whitish collar and the white apical spot. 

 Tvpe in my collection. 



Nepticula ros.efoliella Clemens. 



Xepticula rosccfoJiella Clemens, Proc. Ent. Soc. Phil., I, 

 85, 1861; Tin. Xo. Am., 176, 1872; Dyar, List X. A. Lep., 

 Xo. 6218, 1902. 



This is one of the species named from mine and larva 

 only. Clemens found the mines in leaves of Rosa lucida in 

 September. On leaves of Rosa setigera ]\lichx. in July and 

 October I have found mines agreeing exactly with Clemens' 

 description, in which he says: "The mine is very serpentine, 



frequently running around the edge 

 of the leaf including its teeth, mod- 

 erately broad, nearly filled with a 

 broad blackish-brown frass line, the 

 grains of which are dispersed or 

 have a wavy arrangement in the 

 later part of the mine. In the early portion, the tract is filled 

 with the excrement of the larva." Just before its end, which 

 is often slightly enlarged, the mine measures about 1.5 muL 

 in width. The larva forms a flattened, yellowish brown cocoon, 

 elliptical in outline with a distinct projecting Q^gt extending 

 entirely around it. The imago may be described as follows : 

 Palpi whitish. Tuft ocherous, reddish on the vertex. 

 Antennae black, eye-caps shining creamy white. Thorax 

 black. 



Mine of A^. roscrfoliella. 



