154 Journal New York Entomological Society. [Vol xi. 



Recurvaria thujaella, sp. nov. Plate IX, Figs. 8 and 21. 



Head cream white, closely appressed scales. Palpi long, twice length of head, 

 descending, curved ; cream white, basal joint black, and a black streak on under 

 side of middle joint from base to half its length ; a narrow ring of black on terminal 

 joint near base and another just before apex. Antenna: : length two thirds of fore- 

 wing ; basal joint dark brown, without pecten, balance grayish-white with black an- 

 nulations at incisions. Thorax and patagia cream white. Forewing cream white ; 

 three outwardly oblique, roughly triangular, black costal patches, all edged outwardly 

 with whitish scales ; the inner begins at base and extends nearly to dorsum, the mid- 

 dle patch at inner third and the outer at outer third are both smaller and reach only 

 to median line ; with a denser cluster of black raised scales at lower apex of each 

 forming a distinct black dot ; below each, close to dorsum is a small black dot ; 

 close to costa between basal and middle patch is a sixth black dot, these six dots 

 are in three vertical pairs, almost evenly spaced and are all formed of black raised 

 scales bordered by one or two pure white scales. The outer patch is bordered by a 

 white line from costa, curving obliquely outward to middle of wing and then obliquely 

 inward to dorsum. Beyond this white line on costa is a patch of ground color more 

 or less evenly overlaid with dark brown scales, beyond this on outer margin is a wide 

 band of blackish-brown and a paler streak at extreme outer edge. On costa before 

 apex are three small black dots, also one at apex, one on outer margin close to apex 

 and one close to outer angle, these six spots are of black raised scales with one or 

 two white scales bordering each ; the apical spot is narrowly ringed with ground 

 color, this ring is bordered by darker scales, these scales being condensed into a fine 

 semicircular line on extreme apical margin, the whole forming a clearly defined apical 

 ocellus. Cilia above apex, short, ground color heavily overlaid with black, below 

 apex longer and less overlaid with black, on inner margin light gray and as long as 

 width of wing. Cilia indented at inner angle. Under side smoky gray, a pale 

 whitish narrow shade along costa at outer third and several lighter shades on costa 

 before apex. Cilia much paler, especially along outer margin where it sharply 

 contrasts with dark gray of wing ; this lighter shade turns the corner of the apex. 

 Hind wing light gray ; cilia same, about one and a quarter as long as width of wing. 

 Under side same, but slightly darker. Abdomen creamy white, under side shaded 

 with brown at anterior and middle segments. Legs creamy white, each joint ringed 

 or shaded with dark brown. Alar expanse 8.5 to 10 mm. 



Described from forty-two specimens, bred from Thuja occidentalis, 

 Linn., the common arbor-vit^e used extensively for hedges, and also 

 known as white cedar when allowed to grow into trees. 



Type U. S. Nat. Mus., No. 6964. Cotypes, Am. Mus. Nat. 

 Hist., Acad. Nat. Sci., British Museum and collection Kearfott. 



I.nrva. — Slender cylindrical, tapering only close to ends, slightly annulate, 

 length 7.5 mm. Width central segments, i mm. Width head .5 mm. Head jet 

 black, narrow pointed, scarcely indented at apex, lobes rounded, clypeus narrow, 

 triangular, reaching to within one third of vertex. Prothoracic shield dark brown 

 nearly black bisected by a faint green line and separated from head by a narrow 

 green collar. Anal shield small, black. Thoracic feet black-brown ; abdominal feet 



