210 
translucent apical area of the corium and 
embolium. The members of this genus are 
good ant mimics, and in their general aspect 
are very suggestive of the large species of 
Pilophorus. 
Mate.—Length 5.00, width 1.60. Head 
width 1.14, vertex 0.43; head almost verti- 
cal; vertex and base of front distinctly im- 
pressed along median line but not grooved; 
head very dark brown, clothed with pale 
pubescence, this more prominent on front. 
Rostrum, length 1.99, reaching bases of hind 
coxae, dark brown. Antennae, first segment, 
Ittinois NATURAL History SURVEY BULLETIN 
Vol. 22, Art.@ 
above ostiole. Hemelytra with emboliar 
margins strongly constricted at middle, disk 
nearly flat; cuneus strongly declivitous; 
clothed with moderately sparse, golden yel- 
low pubescence interspersed with more 
nearly erect fine hairs, these more prominent 
on clavus; clavus dull fusco-brownish, a tri- 
angular pruinose field extending upon mid- 
dle from corium; corium fuscous on basal 
half; a transverse pallid spot at middle; 
behind this a dark fusco-brownish area ex- 
tending as far as a line drawn transversely 
through tip of clavus; apical area chiefly 
Fig. 181.— Barberiella apicalis, 9. 
length 0.52, dark brown, with fine and 
dense pubescence and with two or three 
larger, erect hairs near apex, length of these 
less than thickness of segment; second, 2.03, 
cylindrical, slightly thicker than first seg- 
ment, more slender near base, dark brown, 
with fine, dense pubescence; third, 1.11, 
slender, dark brown; fourth, 0.68, dark 
brown. Pronotum, length 1.24, width at base 
1.59; anterior angles 0.84, anterior one-third 
nearly cylindrical to a point just behind 
calli, from thence flaring to posterior mar- 
gin, but margin nearly a straight line; disk 
strongly convex; calli much reduced and 
with two impressed points between; very 
dark brown, darker anteriorly; surface 
leathery with pale pubescence and sparsely 
interspersed with erect, pilose hairs. Scutel- 
lum conically produced; point bent over and 
directed to the rear, fig. 181; sparsely set 
with long, pilose hairs; much of mesoscutum 
exposed, sloping downward to base of scu- 
tellum from which it is not distinctly sep- 
arated; dark brown, moderately shining. 
Sternum and pleura dark brown; posterior 
half of epimeron white; ostiolar peritreme 
dark brown, with a protuberant point just 
pale brownish, somewhat translucent and 
shining, pruinose bordering the transverse 
dark band; cuneus uniformly brownish and 
translucent; membrane uniformly fusco- 
brownish, veins slightly darker. Legs uni- 
formly dark brown, hind coxae with a pale 
or yellowish, opaque spot at antero-lateral 
angle; femora with coarse, leathery surface, 
sparsely clothed with erect, pale hairs; hind 
tibiae compressed, strongly curved, beset 
with yellow, spinelike hairs; tarsi fuscous, 
brownish at base. Venter black with a tinge 
of brown, moderately shining; strongly con- 
stricted at base, a pale mark on side just 
beneath that of corium; venter sparsely set 
with erect, pale hairs. 
Fema.e.—Length 5.50, width before base 
of cuneus 1.59. Very similar to male in 
form and coloration; abdomen broader at 
apex. Head width 1.32, vertex 0.58. Anten- 
nae, first segment, length 0.54; second, 2.10, 
slender on basal half, clavate at apex (0.11 
thick), exceeding thickness of first segment. 
Known DistripuTion.—lIllinois, Missis- 
sippi, New York, North Carolina. 
Illinois Record—SHAWNEETOWN: June 
27, 1936, DeLong & Mohr, 19. 
