Septe mber, 1941 
Foop PLant.—Goldenrod (Solidago can- 
adensis and perhaps other species of the 
genus). [he adults hibernate and come 
forth in early spring to feed on the tender 
goldenrod plants. The eggs are doubtless 
inserted in the goldenrod stems where the 
nymphs appear and feed during July. In 
New York, most of the adults mature by 
the middle of August, and continue to feed 
until the cool September nights make them 
seek hibernation quarters. 
Known DiIstriBuTION.—lllinois, Iowa, 
Minnesota, Ontario, Wyoming and east- 
ward, perhaps everywhere its host plant 
grows freely. 
Illinois Records.—NorrHeErn ILLINoIs: 
1g. AppLE RIveR CANYON STATE Park: 
July 11, 1934, DeLong & Ross, 14, 29. 
GALESBURG: Sept. 13, 1888, 19. Rock 
IsLAND: May 19, 1934, Ross & Mohr, 1 2. 
DAVANNA: June 13, 1917, 19. Whutre 
Pines Forest STATE Park: July 12, 1934, 
DeLong & Ross, 1 ¢. 
Lygus frisoni new species 
This is to be distinguished from oblineatus 
(Say) by its larger size and longer second 
antennal segment; it is smaller than vandu- 
zeet Knight, but the second antennal segment 
is relatively longer than in that species. 
Mave.—Length 6.10, width 3.00. Head 
width, 1.18, vertex 0.48; yellowish without 
dark marks, collum black. Rostrum, length 
2.60, extending to tips of hind coxae, yellow- 
ish, apex black. Antennae, first segment, 
length 0.73, yellowish brown, becoming 
blackish beneath; second, 2.20, brownish, 
apical one-fourth black; third, 1.04, black; 
fourth, 0.91, black. Pronotum, length 1.38, 
width at base 2.38; disk rather coarsely 
punctate; yellowish brown; two small spots 
present behind each callus, large spot at 
either basal angle, and ray behind top of 
coxal cleft, black. Scutellum pale to yellow- 
ish, darker on median line at base; coarsely 
punctate; transversely rugulose. Hemelytra 
punctate, with rather fine pubescence, this 
pubescence more distinct than in vanduzeei; 
pale translucent yellow; apical area of co- 
rium and area on middle of clavus fuscous 
to black. Cuneus pale, translucent; extreme 
tip black. Membrane dark fuscous, veins 
yellowish; marginal spot beyond tip of cu- 
neus and basal half of cells clear. Venter 
very dark brown with a broad lateral, lon- 
gitudinal, yellowish stripe. Legs yellowish 
brown; apical half of each hind femur very 
KNIGHT: PLANT Bucs, or Miripag, oF ILLINOIS 
151 
dark brown, with three rather irregular, 
pale fasciae on anterior aspect; tibiae pale; 
spot at base and elongate mark just beneath 
black. Genital claspers rather similar to 
those of vanduzeei. 
Holotype, male.—Urbana, Ill.: Sept. 
1057 lee ble Ericson. 
Paratype. —Same data as for holotype, 
iets. 
Lygus hesperus Knight 
Legume Bug 
Lygus elisus hesperus Knight (19174, p. 
Mate.—Length 6.50. Head width 1.22, 
vertex 0.45. Rostrum, length 2.68, slightly 
exceeding posterior margin of hind coxae. 
Antennae, first segment, length 0.65, pale 
reddish brown, fuscous on ventral side; sec- 
ond, 2.11, reddish, apex and ventral side at 
base very dark brown; third, 1.00, dark red- 
dish brown to fuscous; fourth, 0.63, fuscous. 
Pronotum, length 1.34, width at base 2.30; 
yellowish; outer half of calli and a small 
round spot behind each inner margin, a spot 
within basal and anterior angles of disk, and 
a small spot behind coxal cleft, black. Hem- 
elytra more pallid than yellowish; apex of 
clavus and suture, apical half of corium, 
and tip of embolium, reddish or marked 
with red; cuneus with inner margin and 
apex reddish. Membrane pale, faintly 
shaded with brownish in areas bordering 
veins, a darker mark at inner apical angles 
of larger areoles. Legs yellowish, more or 
less shaded with reddish; two annuli present 
near apex of each femur; tibiae yellowish, 
apices reddish, spines black. Venter fuscous 
beneath, sides yellowish. Genital claspers 
asvin tres Lots 
FEMALE.—Length 6.40. More uniformly 
yellowish than male, pronotum entirely yel- 
low except for a small black dot behind 
inner margin of each callus; hemelytra uni- 
formly pallid, without reddish; markings on 
femora more reduced than in male; venter 
yellow. Rostrum attaining or slightly ex- 
ceeding posterior margins of hind coxae. 
Foop PLANTs.—This species is an im- 
portant pest of beans and alfalfa in Idaho 
and Utah and on cotton in Arizona. Shull 
(1933) has published a work on the biology 
and economic status of this species and has 
given it the common name “legume bug.” 
Known DistriBuTION.—This is a west- 
