r,io 



S-nxiANiA rr.sTLLAiiiA Giiciic'c. rii.(<' 10, llg. oU. Larvn, I'l. 13, llg. 33; 



l)ii[);i, o'dfi. 



Slnjuiiia j)H.s/i(/»)i« Ciirii., riuil., ii. I'.', pi. I'l lis- ''t l"^'-'"- 



\V;ilU., I-i'l'. Hit. r.i . Mils., xxiii, 8(y, l.Sdl. 



5 J iiiid o 9. — i)0(ly ;iii(l wiiiiis pure while : pnl|)i and anfcMiia' uclircoiis. 

 Fore wintfs pure white, with lour well-iiiaikcd, costal, (leep-uchreous spots, 

 fidin the three inner of which arise slender ochrcoiis lines. The basal line 

 is iiiiich i)ent l)elo\v the costa, and a little wavy ; the middle line is usually 

 wantinir; the e.\tradiscal line is bent outward in the discal space; it is sonie- 

 tiincs broken up into spots and ol'ten wanling-. A few line dots jirocced 

 toward the nuddle of the wing iVoni the I'ourth costal s|;ot, but very rarely. 

 A marginal row of line deep-ochn'ous spots. Hind wings with a single deep- 

 ochreous thread-line. Abdomen jiure while. Fore and middle legs tinged 

 with t)chreous; hind legs white. 



Length of body, S, 0.42, 9, 0.40; of ibrc wing, <? , 0.48, 9, 0.54; 

 expanse of wings, 1.10 inches. 



Fondon, Canada, Jidy 4 (Saunders); Montreal, Canada (Lyman); North- 

 ern Maine, August, in woods (Packard); White Mountains, N. IF, August IG 

 (Shurlletl'); New Hampshire (Dodge); Brooklinc, Mass., August IC (Shurt- 

 leff); Amherst, Mass. (Goodell); Natick, Mas.s. (Stratton); 15oston, Mass. 

 (Sanborn); All)any, N. Y., August 8-17 (Lintner); West Farms, N. Y. 

 (Angus); Brooklyn, N. Y. (Graef); New Jer.sey (Sach.s): Philadelphia, Pa. 

 (Grotc and Auicr. Fnt. Soc). 



This pretty species may lie recognized by its white body and wings, and 

 four deep golden-ochrcous costal spots, with usually a basal and extradiscal 

 line. The lines arc often wanting; and, in one example received from Mr. 

 Lintner, there are only two (third and fourth) costal spots and faint traces of 

 a common line. 



Larva. — "The larva of this little delicate-looking geometric moth feeds 

 on the maple, ll is common in our fieighborhood, and may be readily got, in 

 season, Ijy striking the branches of the trees a sharj) lilow, when it drops at 

 once part way to the groimd, remaining suspended l)y a silken thread, by 

 means of which, w lien danger passes, it can regain its position on the tree. 

 It is found full-grown about the middle of June, enters the chrysalis state 

 within a few days aflerwards, and [iroduces tlie moth early in July. 



"When fnll-growii, the larva measures about live-eighths uf an inch in 

 len;;lh, l)od\' cvlindiical. 



