THE CANADIAN ENTOMOLOGIST 125 



The parasitic enemies of the Early Aspen-leaf Curler are numerous but have 

 not been studied. Of the predacious enemies there are a number. One large beetle, 

 Calosoma frigidnm, was met with everywhere and was observed to be active 

 both by day and night. Running briskly up the trees or flying from branch to 

 branch, it searched diligently for the leaf-curlers which it devoured with evident 

 relish. Its larva is not a climber but is equally useful as it is able to seek out 

 and devour the pupae which are buried below the dead leaves. The increase 

 of this Calosoma beetle has been very marked during the outbreak of leaf- 

 curlers doubtless due to the abundance of caterpillars upon which it feeds. 



Several birds have been observed to eat the leaf-curlers; these embrace the 

 Rose-breasted Grossbeak, Red-eyed \^ireo and Cedar Bird but the time of their 

 activity in this regard is short owing to the fact that the caterpillars season 

 has ended before many of the birds commence to nest. It is, therefore, those 

 species which are passing through during migration that we can look to as being 

 of most use as destroyers of the Early Aspen-leaf Curler. 



A NEW TORTRICID MOTH FROM NOVA SCOTIA, (LEPIDOPTERA). 



BY AUGUST BUSCK, 

 \ .  



Washington, D. C. 



Cacoecia hewittana, new species. 



Labial palpi, face and head light reddish ochreous. Thorax light brown. 

 The ground colour of the fore wings varies in different specimens from light ochre- 

 ous, often with a reddish tint, to dark brown, and is faintly reticulated with 

 thin dark brown transverse lines; a dark-brown, outwardly oblique, transverse 

 fascia from before the middle of costa to just before tornus is normally attenuated 

 on the upper part of the cell and broadens out towards the dorsal edge ; a large dark 

 brown triangular costal spot at apical third is sometimes more or less connected 

 with the fascia ; extreme apex and upper part of termen blackish brown ; the males 

 with a narrow costal fold from base to apical third. Hind wings dark fuscous 

 with apex golden ochreous, cilia golden ochreous with a dark fuscous basal line 

 parallel to the edge of the wing. Undersides of both fore and hind wings light 

 fuscous with the costal termen edges broadly golden ochreous. Abdomen dark 

 fuscous with ochreous underside and anal tuft. Legs golden ochreous. 



Alar expanse: 16-20 mm. 



Habitat: Sydney, Nova Scotia, Canada. 



Type and paratypes in National Collection of Insects, Ottawa, Canada, and 

 in the United States National Museum, (TypeA'^o. 22667). 



Described at the request of Mr. Arthur Gibson, from a large series which he 

 bred from raspberry received from Mrs. S. J. Harrington. 



Named in honour of the late Dr. C. Gordon Hewitt. 



Species is typical of the genus and nearest to Cacoecia fractivittana Clemens 

 but smaller, (especialy the females, there being no striking dissimilarity in the 

 sexes as in Clemens species) and darker in colour. The male genitalia are typical 

 for the genus, with well developed spoon-shaped uncus, hook-like gnathus, 

 absence of socii, well-defined unarmed transtilla and short broad harps. The 

 tegumen is noticeably narrower, the top of the harps more pointed and the aedoe- 

 agus more pointed than in Cacoecia fractivittana Clemens. 



June. 1920 



