A REVISION OF THE DELTOID MOTHS SMITH. 101 



Bomolocha deceptalis, Walkir. 



1859. "Walker, Cat. Hrit. Mius., Heteroceia, X\l. 30, U>ipena. 

 1872. Grote, Tran.s. Am. EntomoIoKifal Soi.. 1\', 104, llypeua. 



1874. Grote, Hull. IJiitt. Soc. Nat. Sci., II. 'A, Macrhypcna. 

 pevangulaUs, Harvej'. 



1875. Harvey, Bull. Htiff. Soc. Nat. Sci., II, 283, lUmolorha. 

 1893. Smith, Bull. U. S. Nat. Mu.s., 44, 393 = 7i. damnosuUs. 

 1893. Butk-r, Entoinologist, XXVI, 31'2, pr. syii. 



Ground color brown: In the female a ratlu'r briii'lit reddish <iray 

 brown; in tlx' male a very dark smoky (useous brown. Head and 

 tbora.x eoneobnous with the primaries, abdomen Avith the sec(»ndaries. 

 l*rimaries in both sexes a little paler powdered in the basal space and 

 again beyond the transverse posterior line; but while iu the female 

 this powdering is quite dense and makes a ligiit bluish gray shade, in 

 the male it is sparse and api)ears as a thin bluish wash over the fus- 

 cous or smoky brown base. Transverse anterior line even, ])ale, yellow- 

 ish, with brown detiniug lines, a little outwardly bent on the costa, 

 straight or a little oblicpie below, again inwardly bent on the internal 

 vein. Transver.se posterior line even, pale, gmy or whitish, preceded 

 by a brown shade line, almost rigid, a little oblique and a very little 

 outwardly bent on the median vein, this angle sometimes disappearing 

 completely. Subterminal line pale, sinuate, rarely continuous, pre- 

 ceded by black spots, which occasionally form a subcontinuons shading. 

 Apex pale, below which there is usually an obli(|ue shade, never j)romi- 

 nent, and often hardly distinguishable from the remainder of the termi- 

 nal space in which the ground color prevails, though more or less 

 modified or lightened by white and bluish scales. A continuous brown 

 terminal line, followed by a yellow line at the base of the fringes. 

 Ordinary spots small, marked by upright black scales as u.sual, scarcely 

 prominent. Secondaiies grayish fuscous in the female, smoky or black- 

 fsh in the male, immaculate except for a brown terminal line, which is 

 followed by a yellow line at the base of fringes. Beneath, gray iu the 

 female, smoky fuscous in the male, immaculate, save that the sub- 

 terminal line of the primaries is incompletely reproduced. 



Expan.se of wings, 30 to 3.1 mm.=^l.liO to 1.40 inches. 



IIABITAT. — Canada to Virginia, to Central States; New Y(»rk in 

 July. 



This is a common species and readily recognizable in both sexes by 

 the very even, pale median lines, the outer nearly rigid or with only a 

 feeble angulation on the median vein. Dr. Harvey has compared the 

 species to ParaUdla hlstri<tria in appearance, and the comparison is 

 not a bad one for the male, which is very much more robust and darker 

 than the female, bec(miing almost blackish in some cases. The sligiiter 

 body and paler colors make the primaries of the female seem more 

 frail, and this is emphasized by the somewhat depres.sed costa in the 

 male. 



