136 
ter black with not more than a red tinge 
at base. 
FEMALE.—Length 7.60, width 2.80. Larg- 
er and more robust than male, but very 
similar in coloration. 
Known DistrrisuTiIoN.—Common over 
the eastern United States. 
Illinois Record.—Westr PuLLMAN: July 
13, 1902, W. J. Gerhard, 19, FM. 
Platytylellus fraterculus Knight 
Platytylellus 
(1923d, p. 554). 
Mave.—Length 5.10, width 1.90. Head 
width 1.00, vertex 0.51; red, tylus blackish. 
Rostrum, length 1.69, black, basal segment 
red. Antennae, first segment, length 0.51; 
second, 1.90; third, 1.43; fourth, 0.80. Pro- 
notum, length 0.90, width at base 1.60; 
bright red; disk black from just behind calli 
to basal margin and with a very slight in- 
dication of median vitta. Scutellum black; 
sternum and pleura red. Hemelytra black, 
very slightly shining; thickly clothed with 
fine dusky pubescence, hairs recumbent on 
apical half. Legs black with red coxae. 
Venter uniformly red and genital claspers 
black. 
FEMALE.—Length 5.60, width 2.00. Slight- 
ly larger and more robust than male, but 
similar in coloration. 
Known DistrisuTion. — Illinois, Indi- 
ana, Michigan, Minnesota, Ontario, Penn- 
sylvania, Wisconsin. 
Illinois Record.—NorTHERN ILLINOIS: 
Bolter, 19. 
insignis fraterculus Knight 
Platytylellus borealis Knight 
Platytylellus borealis Knight (1923d, p. 553). 
Not taken in Illinois; known from Al- 
berta, Maine, Manitoba, Michigan, Min- 
nesota, New York, North Dakota, Ontario, 
Vermont. 
Platytylellus rubellicollis Knight 
Platytylellus rubellicollis Knight (1923d, p. 
55). 
Not taken in Illinois; known from Brit- 
ish Columbia, Maine, Michigan, Minne- 
sota, Nebraska. Nymphs and adults of this 
species have been collected on the figwort 
(Scrophularia leporella), but it has not been 
proved that this plant is normally their host. 
ILLinois NATURAL History SURVEY BULLETIN 
Vol. 22; Arta 
CAPSINI 
KEY TO GENERA 
1. Pronotum punctate, sometimes only 
very finely punctate but usually dis- 
tinctly so; strongly shining, calli 
usually prominent, figs. 152, 153.. 2 
Pronotum impunctate, or with fine 
aciculate punctutes Only gees saee 11 
REARS 
KD 
AAW 
‘ WARNS SD 
Fig. 152.— 4, head and pronotum of Neoly- 
gus invitus; B, head and pronotum of Lygus 
oblineatus. 
Fig. 153.—Head and pronotum of Neoborus 
glaber. 
i) 
Second antennal segment clavate, fig. 
154; juga tumidly convex; vertex 
broad, transversely striolate on 
either side near eyes; short oval, 
convex, chiefly black species...... 
wovot des Gane Capsus, p. 138 
Second antennal segment linear or 
practically so, fig. 155°. 3 
3. Pronotum punctate between calli and 
posterior to collar). a2] = saa 4 
Pronotum impunctate between calli 
and posterior to collars] eam 6 
4. Lateral margins of pronotum not cari- 
nate; form more elongate and sub- 
parallel........Xenoborus, p. 143 
Lateral margins of pronotum carinate 
or at least with a calloused line; 
form ovoid..... ..9. =n 
5. First antennal segment distinctly 
thicker than second segment and 
both segments black; body color 
red-and black. .. 7 ee 
RN nw Eg Tropidosteptes, p. 
First antennal segment slender, 
scarcely equaling thickness of sec- 
ond segment at apex; if body col- 
ored reddish, first and second an- 
tennal segments pale or yellowish. . 
eee ret... Neoborus p. 139 
