IIHSI'KRIDI: TII.VXAOS LUCILIUS . 



1461 



Described from 21 i , 8 9 . 



Accessory sexual peculiarities. The costal fold of the fore wing of the male 

 encloses a mass of clustered pediform bristles (47 : 4a) about .Coram, long; scaphiform 

 androconia of varying lengths (4 b, e) often no more than twice as loug as broad, 

 seated upon the costal vein : stout, rod-like androconia (4 d), occasionally two-pronged 

 at tip; others similar, but laminate (4 c) and perhaps only slender forms of the usually 

 thin, widely expanded and more or less irregularly, round, oval cover-scales (4f). 



Egg (66:14). Broad, slightly narrowing as it passes upward, the summit very 

 broadly rounded ; sides furnished with from twelve to fifteen distinct ribs, compressed, 

 not very high, passing from extreme base to or nearly to the micropylic depression in 

 a slightly sinuous or tortuous course ; when they stop short of this depression a new set 

 of ribs starts between the others, one to every two or three of those below, generally 

 one in the middle between a pair; but sometimes closer to one than to the other, and 

 rarely directly continuous to the depression itself; the vertical ribs are connected by 

 frequent, very delicately raised straight lines, at equal distances apart, occasionally 

 near the shoulder of the egg a little oblique, separating cells about seven times as 

 broad as long; the whole surface densely punctuate. The micropylic depression 

 (69:3,6) .2 mm. wide; the central micropylic cells smooth, not punctate, rounded 

 cuneiform, about .065 mm. in length; outside of these smooth cells the surface is at 

 once punctuate, and the cells very delicate and obscure, hexagonal, their longer axes 

 diverging. Color at first of a green so delicate and pale as to be almost white, after- 

 wards turning to a pale salmon color. Height, .65 mm.; greatest breadth, .65 mm.; 

 the vertical ribs at most .16 mm. apart, .03 mm. high in the middle; the transverse 

 lines .025 mm. apart. 



Caterpillar. First staije {73: 2). Head (80:31) blackish chestnut brown with 

 black ocelli and white hairs, the mouth parts concolorous. Body very pale greenish 

 yellow, the dorsal shield of first thoracic segment merely dusky, legs and prolegs con- 

 colorous, the claws of former luteo-castaneous. Length, 2 mm. ; breadth of head, 

 .45 mm. ; clubbed bristles, .025 mm. long. 



One specimen obtained from eggs collected in the field had a colorless or albino 

 head, but it was evidently a sign of some deficiency as it died without eating. 



Second stage. Head (80:32) a little bilobed, pitchy black, studded with fine, white 

 or translucent hairs all very short ; mouth parts and antennae black. Body of the 

 green of the under surface of the leaf of columbine, each section of the segments 

 with a transverse series of short, whitish hairs like those of the head ; dorsal shield of 

 first thoracic segment whitish and smooth, without hairs; legs and prolegs green. 

 Length, 4 mm. ; excepting the slenderness of the body the form is that of the adult. 



TTiird stage. Head (80 : 33) subquadrate, larger than the next segment but smaller 

 than the middle of the body, the upper outer angles produced to a slight stellate tuber- 

 cle or r.ither to four or five projecting blunt points ; upper margin roundly excised ; 

 black, made hoary by abundant short, white hairs. Body grass green or the green of 

 the upper side of the columbine leaf, the sides paler and tinged with yellowish; a nar- 

 row dorsal band darker green and a lateral line white with a tinge of green ; a similar 

 fainter and posteriorly obsolescent, snprastigmatal line. Beneath pale green. Whole 

 upper surface dotted with short, pellucid, fungiform bristles (86 : 46, 47) in tolerably 

 regular, transverse series, seven or eight series to a segment, growing from pallid 

 wartlets. Spiracles pallid. Legs and prolegs color of under surface ; claws of former 

 fuscous. Length, 7.5 mm. ; breadth, 1.2 mm. 



