528 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvn. 



On the venter of ca.se, hiterad of the cephalic margin of vasiform 

 orifice, there are a pair of tapering- hair.s. 



Legs di.stinct, apparently un. segmented. Antennte not vi.sible. 

 Eyes single, large, and d„rk red in color. 



Adult fei)udt:. — Length, usually about 1 nun., but sometimes varies 

 to 0.83 mm. Fore wing, 1.07 mm. by O.-iT mm. to 1 mm. ])y 0.4 nmi., 

 hind wing on same insect, 0.9 by 0.38 mm.; front tibia, O.IT mm.; 

 front tarsus, 0.2 mm. ; hind tibia, 0.3 mm. ; hind tarsus 0.2 mm. ; color 

 of body, uniformly pale 3^ellow, legs and antennte white; entire insect 

 thickly coated with white granules; wings inmiaculate, entire wing 

 with a narrow sculptured border, which is wider on the costal margin, 

 each of the minute divisions with from three to five delicate hairs; 

 margin of very bright yellow; main vein al)out seven-eighths length 

 of wing, well defined to, and somewhat beyond the flexure and then 

 fading out. Flexure of main vein of front wing at about one-half its 

 length; ])asal half of main vein nearer the costal margin, the apex of 

 vein in middle line of wing. The veinlet arises at base and varies in 

 length with different specimens; in some it is ver}' short; in others it 

 turns abruptly and is continued to the anal margin of wing. Fyes, 

 large; by transmitted light, reddish black; by reflected light, dark red. 

 Each is divided into two distinct regions b}^ a wedge-shaped white 

 mass of wax, which dissolves in Canada balsam; the more dor.sal 

 region is subpyriform in shape and much the smaller; the facets are 

 minute, and the color is bright red; the ventral region is crescent 

 shaped on dor.sal side, and the facets are much larger than those of 

 the dorsal portion; color, brownish red. When the insect is mounted 

 in Canada l)alsam there is no perceptible division of the compound 

 eyes, and the general shape is either reniform or oblong, constricted 

 about the middle. 



Antennae with segment one cup-shaped, short, as broad as long; 

 segment two about twice as long as segment one, pyriform, and l)ear- 

 ing a clavate process, which is tipped with a hair; segment three sul)- 

 C3dindrical, long, and tapering considerably at point of insertion with 

 second segment; near the distal end there are two clavate processes; 

 segment four very short and cylindrical; segment five longer than 

 fourth segment, cylindrical to near the distal end, where there is a 

 notch from which arises a clavate process; segment six. subequal with 

 fifth segment, cvlindrical; segment seven, subequal with fifth and sixth 

 segments. At one-half length it abruptly narrows to a point and ends 

 in a finger-like process, which is tipped with a hair; at the place where 

 segment is narrowed is seen one or more minute, clavate processes; 

 segments three to .seven, inclusive, are closely ringed with short hairs. 

 Genitalia acutely conical. 



JSIaJe. — I'nknown. Of the very many adults collected at various 

 times all proved to be females. 



