PAMPHILIDI. THYMELICUS AETNA. 1697 



Imago (10:lo, 19). Head covered above with yellowish green hairs witli mingled 

 black 'and occasional yellow ones; the tuft at either si<le of the antennae mostly 

 made of black bristles, with a few yellow ones; scales beneath the eye very pale yel- 

 lowish; behind the eye nearly white, becoming lemon yellow above. I'alpi very pale 

 greenish yellow at base, Ijecomin^ gradnally more lemon ycUow toward the tip, 

 with longer black bristles sparsely scattered throughout ; above they closely resemble 

 the summit of the head ; apical joint blackish brown behind, lemon yellow in front 

 and at tip. Antennae above posteriorly blackish brown in rather a narrow belt, 

 usually infringed upon on the basal half of the club by the pale yellow, which 

 covers the rest of the antennae, excepting the ai)ices of the joints which are largely 

 blackish everywhere but on the club ; the anterior part of the club is soft orange 

 tawny and its apical fourth anteriorly with the crook are naked and briglit castaneous, 

 excepting the apical half of the crook which is dusky, growing blackish toward the 

 tip. Tongue black, apical third testaceous. 



Thorax covered above with mingled bright greenish and greenish tawny hairs, 

 beneath with pale and bright greenish gray hairs, mingled In front with a few dusky 

 ones. Femora dark purplish blown, largely flecked with greenish yellow scales upon 

 the under half and covered with tawny scales above ; tibiae tawny buff, the front brown ; 

 leaf-like appendage of fore tibiae cupreous; tarsi pale tawny bnff, obscured with 

 brownish above especially on the apical joints; spurs buff, minutely ti|iped with dark 

 reddish; spines reddish testaceous. Cl.aws reddish; pad dusky. 



Wings above glistening blackish brown, the nervures marked obscurely with very 

 dark green. Fore loings with a transverse series of three small, subcostal, tawny 

 yellow spots, increasing in size downward and situated just beyond the middle of the 

 outer half of the costal margin; also other extra-mesial spots in the median inter- 

 spaces of a similar color, usually paler in the $ than in the <J ; the upper is triangu- 

 lar, occupies the base of the upper median interspace, and is usually twice as long as 

 broad; the lower is either a slight dash in the upper part of the lower median inter- 

 space below the inner extremity of the upper spot ((J), or longer than the upper, quad- 

 rate, occupying the breadth of the interspace and situated as iu the other sex ( ? ) ; 

 occasionally in the latter sex there is a slight dash below this on the submediau 

 nervure; these are all the markings of the ? , but in the (J the basal half of the wing 

 is largely flecked with elongated orange tawny scales, less profuse in the middle of 

 the wing than toward either border; and below with longer scales than above. Discal 

 stigma (43 : 14 ; 43 : 6) more complicated than in any other of our Paraphilidi, con- 

 sisting of the following elements : an oval patch of velvety purplish black, base- 

 ward directed hairs, compactly clustered next the lower border of the cell, extending 

 from the base of the upper median interspace a little more than half way to the flrst 

 divarication of the median, bluntly pointed at either extremity, about four times as 

 long as broad; a small roundish patch of similar but upward directed hairs, its 

 diameter scarcely greater than the width of the other patch, seated in the middle 

 of the medio-submedian interspace next the middle of the basal two-thirds of the 

 submedian nervure, but touching neither nervure; and between them and filling a 

 space beyond them as far as a line drawn at right angles to the nervures from 

 the middle of the lower surface of the longitudinal patch to the submedian nervure, 

 a somewhat loose collection of exceedingly large fuliginous brown scales, directed to- 

 ward the middle of the lower edge of the collection and more or less divided into two 

 clusters by the lowest median nervule; this is followed by a quadrate mass of 

 partially erect, ordinary scales of a dark brown color with greenish and purplish re- 

 fliections, extending along the lower median and medio-submedian interspaces, except- 

 ing the upper fourth of the former, nearly or quite half way to the outer border. 

 Fringe dirty pale, occasionally tinged with tawny, the basal half more or less infus- 

 cated. Hind loings having all the central parts of the wing and sometimes the whole 

 wing enlivened by frequent olivaceo-tawny hairs, a color occasionally partaken of 

 to some extent by the scales and then rarely forming faint indications of an extra- 

 mesial transverse series of spots in the middle of the outer two-thirds of the wing, 



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