nN 
i) 
ILLINoIis NATURAL History SuRvVEY BULLETIN 
collar well marked, fig. 73 (Monaloc- 
ONES D.09 0) pene aee Bryocorinae, p. 58 
Either dorsal outline much more 
elongate, fig. 97, or pronotal collar 
absent<figi//<. 2. ene te eee 19 
. Tibiae without spines, only hair. Short, 
robust species, figs. 100, 101, with 
the pronotum greatly swollen poster- 
iorly and the areole demarked by a 
single, angulate, thick vein (Szxeo- 
notus, p. 59, and Pycnoderes, p. 60) 
ity ce chet rane Bryocorinae, p. 58 
Tibiae with spines which project be- 
yond hair, fig. 17; either more 
elongate, slender species, fig. 97; or 
pronotum only moderately enlarged 
posteriorly, fig. 87; or areole divided 
into large and small parts, fig. 17. . .20 
. Pronotum wide, without collar or 
collarlikesareamtigss 7/07 9. fee 
Phylinae, p. 22 
Pronotum narrower, anterior portion 
somewhat necklike, with a collar or 
collarlike flat area, figs. 78, 97...... 21 
21. Hind tarsi very long and slender, fig. 
74; second segment very long, claws 
Sia ee eee Dicyphinae, p. 52 
Hind tarsi stouter, figs. 75, 76; second 
segment not much longer than third. 22 
Hind tibiae with a few black spines at 
apex, fig. 76; tarsal segments robust; 
tarsal claws long, figs. 46, 47, sharply 
curved satiex tlemesa pc ae 
A lis Cael st bee Phylinae, p. 22 
Hind tibiae with no black spines at 
apex, fig. 75; tarsal segments bilater- 
ally compressed; tarsal claws short, 
figs. 52, 53, evenly curved from base 
Dicyphinae, p. 52 
3) eof c0 eet ie) cerlsi ce. (ee, '@) ©) 6) 10) 
PHYLINAE 
KEY ORG EINER 
. Pronotum nearly triangular with a 
more or less flattened apical collar, 
but this collar not set off from disk 
of pronotum by a distinct carina, 
fig. 78; abdomen usually constricted 
atsbasesas Inet? Oe a ena 2 
Pronotum wider without a flattened 
apical collar, figs. 77-79; abdomen 
hever' constricted at base, er 4 
. Second antennal segment strikingly 
clavate, its thickness at apex more 
than twice that at base; beak reach- 
10. 
. Second 
V ols 22 Arie 
ing almost to hind coxae; hemely- 
tra fully developed in both sexes. . . 
icin Ons ei ee Teleorhinus, p. 52 
Second antennal segment linear or 
slightly thickened at apex, fig. 80; 
beak reaching middle coxae; females 
brachypterous or wingless........ 3 
antennal segment linear; 
pseudarolia attached at base of 
claw, free apically, fig. 47; females 
Wingless 724). ae Coquillettia, p. 52 
Second antennal segment slightly 
thickened at apex, fig. 80; pseuda- 
rolia completely jointed to claw, fig. 
46; females brachypterous........ 
J, ee ae Orectoderus, p. 52 
Cuneus white or very light yellow, 
with transverse black bar across 
middle; membrane dark brown or 
black, with prominent white mar- 
ginal spots, fig. 93; pseudarolia 
large, attached only at basal angles 
and extending free and parallel with 
claws to tips, ig. 52) 7. 
ren ey Macrotylus, p. 51 
Wings not marked as in fig. 93; pseu- 
darolia large and completely united 
with claws, fig. 46; or pseudarolia 
minute or wanting, figs. 38-43.... 5 
Vertex and pronotum bearing silvery, 
scalelike hairs, these hairs some- 
times in tufts...) 2 er 6 
Vertex and pronotum not bearing sil- 
very, scalelike hairs )) eee 11 
Head transverse, front vertical, not 
protruding in front of antennal 
bases as seen from dorsal aspect... 
octal See Rhinacloa, p. 50 
Head produced in front of antennal 
basessfig. 89... .... 4. 7 
Tylus sharply produced, apex acute, 
ic. Ol kere eae Criocoris, p. 49 
Tylus not produced, apex blunt..... 8 
. Second antennal segment strongly 
Chickene rain Atractotomus, p. 51 
Second antennal segment linear, not 
thicker than first segment........ 9 
. Length of second antennal segment 
less than width of head across eyes 
pr ie 2 WS hun Nan Lepidopsallus, p. 46 
Length of second antennal segment 
greater than width of head across 
Pseudarolia attached only at base of 
claw, tip free and extending to 
middle of claw, fig. 43; color green- 
