402 Eepoet of the Department of EiNtomology of the 



Habitat,^ New York. 



Host plant, Mahaleb cherry. 



Moth, primaries white with fringe slightly 

 clouded. Expanse of wings 18 to 

 19 mm. 



Larva, pale or greenish-yellow or olive 

 green. Length 12 to 16 mm. 



Pupa, light orange yellow and dark brown 

 or black about head and tip of abdo- 

 men. Length 8 to 9 mm. 



Cocoon, white and concealing pupa. 



Padellus. Malinellus. 



Habitat,' Japan. 



Host plant, apple. 



Moth, primaries including fringe usually 

 white, but fringe is sometimes slightly 

 clouded. One moth also shows shad- 

 ing on costal margin. Expanse of 

 wings 20 to 22 mm. 



Larva, dark olive green. Length 12 to 

 15 mm. 



Pupa, head, wing pads and tip of abdo- 

 men dark brown, and about constric- 

 tions of abdominal segments lighter 

 brown. Length 10 to 12 mm. 



Cocoon somewhat thin in texture, grey- 

 ish or white in color, and thickly 

 massed. 



Habitat,' New York. 



Host plant, crab. 



Moth, primaries white or white with 

 fringe slightly clouded. Expanse of 

 wings 18 to 20 mm. 



Larva, pale, greyish-brown or dark green- 

 ish yellow. Length 12 to 15 mm. 



Pupa, light orange yellow and some speci- 

 mens with extremities dark. Length 

 6 to 8 mm. 



Cocoon, usually white and densely woven, 

 but some specimens were thin in tex- 

 ture, showing the pupaj. 



From the foregoing comparisons it will be observed that the adults 

 of padellus from hawthorn and of malinellus from apple represent 

 for the most part extremes in wing coloration. The former contains 

 a majority of moths which have the primaries and fringes clouded, 

 greyish or lead colored, while the latter has a majority of moths 

 with primaries and fringes white. The two are distinct enough 

 when characteristic examples are selected, but the separation of 

 them becomes difficult when the intergrading forms are considered, 

 as they merge into each other by imperceptible gradations. 



The larviB of both forms are quite variable in color but they 

 present no structural differences. In the collections from apple 

 seedlings pale forms predominated. The pupse and cocoons of the 

 insects from hawthorn as shown by Rebate consistently differ from 

 those taken from apple, but no constant differences were observed 

 in the material collected from cherry in comparison with that 

 obtained from apple. If any differences exist in the insects reared 

 by us from cherry and apple they are principally that the moths 



1 Collection, 14 adults, 15 larvae and 3 pupse from Dr. S. I. Kuwana, Tokio, Japan. 



^2 Collection, G adults, 12 larvae and 2 pupae from imported seedling cherries growing 

 in nursery plantations about Geneva. 



'Collection, 76 adults, 16 larvae, 7 pupse from imported apple seedlings growing 

 in nursery plantations about Geneva. 



