150 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



EXPLANATION OF PLATES. 



PLATE VII. Fig. 1, pitch nodule on Pinus virginiana caused by Evelria 

 virginiana Busck; fig. 2, pitch nodules on Pinus divaricata caused by Evetria 

 albicapitana Busck. 



PLATE VIII. Fig. 3, chestnut leaves injured by Eucosma haracana Kear- 

 fott; fig. 4, twigs of Quercus palustris showing spiral mines of Ectoedemia 

 heinrichi, Busck. 



LIFE HISTORY OF EUGOSMA HARACANA KEARFOTT. 1 



BY AUGUST BUSCK, Bureau of Entomology. 



Protopteryx haracana Kearfott, Trans. Am. Ent. Soc. Phila., vol. 33, p. 44, 



1907. 

 Protopteryx resoluta Meyrick, Ent. Mo. Mag., vol. 23, p. 34, 1912. 



During May and early June many leaves of the chestnut in 

 the vicinity of Washington, D. C., are found to be rolled inwards 

 and downwards, as shown in the accompanying photograph, 

 (pi. VIII, fig. 3) . These very common and conspicuous rolls are pro- 

 duced by the larvae of the above species, the life-history of which 

 has hitherto been unknown. 



The young larvae of this species are .yellowish white with jet 

 black head and thoracic shield and with black thoracic feet; 

 tubercles small and inconspicuous, hardly darker than the rest 

 of the body and with short white hairs; prolegs normal with a 

 complete circle of small hooks. The full grown larvae have light 

 yellow head with black eyespots, yellow thoracic shield and feet; 

 length 14 mm. When full grown the larvae leave the rolls and 

 let themselves down to the ground, into which they burrow and 

 make a tough, parchment-like oval cocoon, in which they remain 

 as larvae until late fall. In a warm room the moths began to 

 issue early in February; outdoors under natural conditions issu- 

 ance does not take place before April. 



Presented at meeting of April 2, 1914. 



