1911] Hypera and Phytonomus in America 40.'! 



In the male the outer interspaces have paler scales even in the 

 darkesi specimens, in the female this pale coloration is sometinjes, but 

 rarely, entirely absent. 



Venter with lighter colored scales and many light hairs; front coxa? 

 slightly separated, mesosternal process between middle coxa? broad 

 perpendicular, triangular at tip; intercoxal process of first abdominal 

 segment very broad, coxse separated by more than their width. First 

 segment in male impressed, emarginate posteriorly. Stem of male 

 genitalia (PI. XXIY. fig. 14), nearly or quite as broad as long. 



Legs short, stout, especially the femora; black, tarsi often fer- 

 ruginous, claws long curved, red and darker at tips; front tibiae and hind 

 femora distinctly curved, front tibiae more so in male; legs usually 

 clothed with lighter scales and hairs than the body, femora scaled, 

 tibia? and tarsi sparsely haired; middle tibiae with a distinct apical hook. 



Egg: elongate oval, 1.1 mm. to 1.2 mm. long, 0.5 to 0.(5 mm. broad, 

 very regularly hexagonally sculptured. The sculpture at one end often 

 merging into stria?. As the larva develops the egg changes from an 

 orange or chrome yellow to a dull black. 



Lance: (PL XXVI, fig. 1). (Descriptions from Riley, Folsom and 

 observations by the author). First stage: 1.5 to 2 mm. long, narrow, 

 thickest at middle, tapering toward both ends; head brown, blackish- 

 brown or black, with many fine transverse lines on the face; eyes very 

 small, circular, projecting; mandibles terminating in two large sharp 

 teeth, more or less separated, the lower one again di vided into two or 

 three parts; palpi pale yellow, mandibles brown or dark brown; dorsum 

 of first thoracic segment with a rectangular dark band interrupted by a 

 paler dorsal line which is the continuation of the stem of an inverted Y 

 on the face, this dorsal band becomes wider on the abdominal segments 

 and extends to the tip of anal segment. Hairs on the tubercles clavate 

 as in several other species. Color varies with place of feeding, if con- 

 cealed in bud or stalk is very pale, if exposed is more or less green. 



Second stage: Color greener, head dark brown, front and sides of 

 rectangular plate on first thoracic segment dark, the remainder green- 

 ish; dorsal median line with a fine dark border, darker than the remain- 

 der of the larva. Side line below spiracles indistinct. Length 4-4.5 

 mm., width 2 mm. 



Third stage: Black lines on each side of dorsal line very distinct; 

 head as in second stage, eyes densely black, antenna? darker; color of 

 larvae (Folsom) may be blue green. Usual color pale green. Length 

 5 to 7 mm., width 2.5 to 3 mm. in the middle. 



Fourth stage: Dorsal line very white indistinctly bordered by rose 

 color, usually rather pale but sometimes rosy-black, the outer borders 

 of this coloration are black and form distinct lines, interrupted on the 

 margin of each segment; head very dark brown; larva much darker 

 green; lines below the spiracles dark both showing a tendency to be 

 brown or blackish, anal segments brown ; the surface of the body much 

 rougher in this stage than in others, the triangular points of the cuticle 

 standing out prominently; tubercles on the thoracic segments below 

 very strong and the hairs more prominent than in earlier stages. Length 

 8 to 14 mm. 



