September, 1941 
ee 1.05 June 1, 1913, 1°. OQUAWKA: 
June 13, 1932, H. L. Dozier, 19. SAvan- 
NA: July 21, 1892, from sweet clover, Mc- 
Elfresh, 19. 
Lopidea lathyri Knight. Emended name. 
Lopidea lathyrae Knight (1923c, p. 66). 
Mavre.—Length 5.90, width 1.90. Head 
width 1.11, vertex 0.65. Antennae, length of 
first segment, 0.65; second, 2.00, cylindrical. 
Pronotum, width at base 1.71. Size, form 
and color very suggestive of confluenta 
(Say) ; mostly deep red; legs, antennae, pro- 
notal disk (except lateral and anterior mar- 
gins), scutellum, broad stripe on either side 
of commissure, and membrane, black; 
clothed with fine, yellowish pubescence on 
red areas, but pubescence black over dark 
surface, with a few sericeous, yellowish 
hairs about margins of calli. Genital clasp- 
ers, fig. 121, distinctive for species. 
FEMALE.—Length 6.20, width 2.20; very 
similar to male, but with embolium and 
outer half of cuneus pale. 
Foop PLant.—Vetchling (Lathyrus ve- 
nosus). In Minnesota I found this species 
so abundant that its host plants were largely 
killed. This mirid may be regarded as a po- 
tenial pest of cultivated vetches. 
Known DistriputTion.—lIllinois, Mani- 
toba, Minnesota, North Dakota, Oklahoma, 
Saskatchewan. 
Illinois Records.—Patos Park: July 10, 
tei 2 Ave Be Wolcott, 34,39, FM; July 2, 
1916, W. J. Gerhard, 1 g, Fm; July 4, 1918, 
W. J. Gerhard, 19, FM. 
Lopidea reuteri Knight 
Lopidea reuteri Knight (1917d, p. 459). 
Mare.—Length 7.10, width 2.54. Gen- 
eral color a vivid carmine red, with fuscous 
on calli, scutellum and areas bordering com- 
missure. Very similar to caesar (Reuter), 
but with fuscous areas on corium and cu- 
neus narrower; genital claspers, fig. 121, 
distinctive for species. Antennae, length of 
first segment, 0.65, thickness 0.17; second, 
length 2.42, greatest thickness 0.16, taper- 
ing from middle to become more slender at 
apex; third, length 1.60, linear and slender; 
fourth, length 0.60; black, first two seg- 
ments clothed with prominent, coarse hairs; 
almost identical in structure with caesar. 
FEMALE.—Length 6.90, width 2.50. Struc- 
turally and in color very similar to male; 
KnicHut: PLant Bucs, or Miripaez, or ILLINOIS Q]| 
also very similar to female of caesar, which 
species rarely has calli darkened and usually 
has less fuscous shading on scutellum. Head 
width 1.17, vertex 0.71. Antennae, length 
of first segment 0.74, thickness 0.17; second, 
length 2.62, greatest thickness 0.17. 
Foop PLrant.—Witchhazel (Hamamelis 
virginiana ). 
Known DistrispuTtTion.—lllinois, Massa- 
chusetts, Michigan, Mississippi, Missouri, 
Pennsylvania, Virginia, West Virginia. 
Illinois Records.—Granp Tower: June 
Jali, Wes 1 Phe 
Lopidea instabilis (Reuter) 
Lomatopleura instabilis Reuter (1909, p. 72). 
Mate.—Length 5.40, width 2.02. Anten- 
nae black, two basal segments clothed with 
moderately short, black hairs; first segment, 
length 0.58, thickness 0.08; second, 1.80, 
thickness 0.07 at middle, tapering to become 
smaller at either end; third, length 1.19, 
slender; fourth, length 0.52. General color 
bright red, apical half of clavus and inner 
half of corium darkened with fuscous ; mem- 
brane uniformly blackish; tibiae blackish, 
becoming reddish at base; genital claspers 
distinctive, fig. 121. 
FEMALE.—Length 6.00, width 2.40; simi- 
lar to male in coloration, pubescence and in 
structure of antennae. Head width, 1.10, 
vertex 0.65. Antennae, first segment, length 
0.66, thickness 0.17; second, length 2.12, 
greatest thickness 0.17. 
Foop PLAant.—Lead plant (4 morpha ca- 
nescens). 
Known DiIstrispuTION.—Miuissouri, Ne- 
braska, North Dakota, South Dakota, east- 
ward to Connecticut, southward to Missis- 
sippi, Alabama. 
Illinois Records.—NorTHERN ILLINOIS: 
at LA RUE? suly 11,1935), DeLong & 
Ross, 49. SAVANNA: July 24, 1892, along 
pity Gor Ate ELart = leo. 
Diaphnidia Uhler 
KEY SLOsSPECIES 
1. Head black, first antennal segment very 
darken aa mae yasce capitata, p. 92 
El éad ipa le sate sreaenin paren eee mece maar 2 
2) secondiantennalisegiment pale... 
SAE ee Es pellucida, p. 92 
Second antennal segment fuscous to 
blackiee senna tae provancheri, p. 92 
