August, '14] BUSCK: A DESTRUCTIVE PINE-MOTH FROM EUROPE 341 



fully watched in view of the experience with other forest Lepidoptera 

 introduced accidentally from Europe. 



How long the species has existed in this country and how extensive 

 is its present range must be determined by investigation. It was 

 observed on the pines at Great Neck last season also, 1913, and Dr. 

 Hopkins was informed about it, but too late to secure material. 



However, it seems probable that it is a recent introduction, consid- 

 ering that the species has not been noticed before, although special 

 work on this group of pine insects has been done b}^ Packard, Riley, 

 Fernald and later workers, and extensive and careful collecting has 

 been done in recent years on Long Island by the several active ento- 

 mologists of the vicinity, and the more so, as it is a strikingly colored, 

 orange-red insect, three fourths of an inch or more in alar expanse, 

 larger and quite different from the other species of the genus. The 

 work also is easily itoticeable and presumably would have been ob- 

 served before, if the species had been present. 



The eggs are laid on the buds of pine in the late summer: the young 

 larva eats out one bud during the fall and overwinters within; in the 

 spring it leaves this bud and attacks the young growing buds, exca- 

 vating and successfully killing a number of these; as the twigs grow, 

 the larva often eats only one side of them, thereb}' causing the above- 

 mentioned curved growth, which results in the characteristic "Post- 

 horn. " The larva is dark brown with black head and thoracic shield, 

 it becomes mature early in June and pupates within the last silk-lined 

 burrow; the moth is 17-22 mm. in alar expanse; the forewings are 

 ferruginous orange, suffused with dark red, especially toward apex, 

 and with several irregular, anastomosing, silvery cross-lines and costal 

 strigulae. 



The species has only one • generation in Europe, overwintering 

 as half-grown larvae and issuing as moths in July, but allied species 

 of the genus in this country have two generations annually, and it 

 is not impossible that Evetria huoliana may also develop two broods 

 in this climate and thus greatly increase the potentiality for injury. 



Entomologists and others interested are asked to be on the lookout 

 for this destructive insect and to please report eventual outbreaks 

 to Dr. A. D. Hopkins, in charge of Forest Insect Investigations, 

 Bureau of Entomology, LTnited States Department of Agriculture. 



EXPLANATION OF PLATE 



Fig. 1. "Posthorn" growth caused by Evetria huoliana. 



2. Evetria huoliana 2\ times enlarged. 



3. Evetria huoliana young larva in pine buds. 



1, after G. Severin: "Le genre Retinia." 



2 and 3, after J. E. V. Boas: " Dansk Forstzoologi." 



