or THE STATE ENTOMOLOGIST. 107 



Imago. — Average alar expanse G.83 inch. Color lilaceoiis or purplish, with a silky 

 i^loss. Front wings with a slight grayish hue, and with two large, bright, golden-yel- 

 low costal spots, dividing their anterior portion into three equal parts; the outer spot 

 largest, with a lilac-colored line, rather lighter than the ground-color, continuing from 

 its posterior margin in an almost straight transverse line toward the posterior angle ; 

 the inner spot smaller, with a similar line extending from it, but obliquing more to- 

 ward the base. Hind wings lighter than front Avings, except near the posterior mar- 

 gin ; with two wavy light straw-colored transverse lines, the outer one starting a little 

 outside the middle of the wing on the costa, where it broadens, and curving to the anal 

 angle. All the wings margined with deep orange, which is broadest at apex of prima- 

 ries. Fringes having the appearanc<^ of raw spun silk, being of a very glossj% golden- 

 3'ollow, deepening a little toward base, and separated from the orange wing-margin by 

 u more or less distinct, very narrow, pale yellow line. Under surface with the colors 

 more luteous, and the markings less distinct, the hind wings having apparently three 

 li'ausverse lines, when held between the light, the posterior one being nearer the hind 

 margin of the wing than it is superiorly. Legs and head of aglossj'^ straw-color. Body 

 the same underneath, lilaceous at sides, and darker, more grayish, above. Thorax like 

 the body ; the prothorax and tegula; being lighter. Palpi and antenme pale orange, 

 more or less distinctly tinged with lilaceous. Certain^ individuals much paler than 

 others. 



There is considerable variation in the relative distinctness of the transverse lines 

 and size of costal spots, as well as in the depth of ground-color. 



AVe have another species, the Asopia oUnalis Gn. (see p. 103, note), which has pro- 

 bably been confounded with it, and which Zeller erroneouslj-^ supposes has been so con- 

 founded in the American Etitoinolor/lst.^- OUnalis has a larger average size (expanding 

 one inch) ; is deeper colored, with head and feelers more purplish ; has the transverse 

 lines usually less distinct, though with a deeper coincident shade basallj^ ; but is espe- 

 cially distinguished by having the basal third (sometimes half, sometimes three-fourths) 

 of fringes of a purple (rather brighter than the general tint) color, and the margin of 

 wings narrowly lined with black scales instead of broadly lined with orange. Conse- 

 quentlj^, the wings appear much more narrowly rimmed Avith gold. The imderside is 

 also more uniform and darker than in costalis, and the posterior transverse line on the 

 secondaries furnishes one of the best distinguishing features, for it is more clearly de- 

 fined, and runs almost directly under the similar line on the upi)er surface, and, there- 

 fore, much nearer the middle of the wina-. than in cosfalis. 



THE LEGGED MAPLE BORER— .F^eria acerni (Clemens). 

 (Ord. LEriDorTEKA : Fam. ^Egeriid.e.) 



Vieing with the Flat-headed Borer, in destriictiveness, but gener- 

 ally following in its trail and rendering "more conspicuous the damage 

 Avhich that species does to our shade maples, the insect under consid- 



*Bcitr. z, Kenntn. d. nordam. Nacht/alter; Part 1, pj). o3-J, 



