60 Ittino1is NATURAL History SURVEY BULLETIN 
0.26; second, 0.56; black. Pronotum, length 
0.89, width at base 1.30; basal margin very 
slightly sinuate along middle, obscuring base 
of scutellum; disk moderately and evenly 
convex, coarsely and closely punctate, shin- 
ing. Scutellum coarsely punctate, apical area 
rather distinctly convex and with finer punc- 
tures. Uniformly black, trochanters some- 
what pale; membrane uniformly dark fus- 
cous or black; veins black. Clothed with 
prominent, erect, stiff, white pubescence. 
FEMALE.—Length 2.90, width 1.48. Head 
width 0.73, vertex 0.47. Antennae, first seg- 
ment, length 0.25; second, 0.53. Pronotum, 
length 0.90, width at base 1.27. Very simi- 
lar to male in form, punctation and pubes- 
cence, but generally slightly darker in 
color. 
Known  DistripuTtion. — Originally de- 
scribed from Mississippi. Now known also 
from Illinois. 
Illinois Records. — GALEsBurG: Sept., 
Stromberg, | ¢ ; Aug. 29, 1888, Stromberg, 
eye 
Sixeonotus areolatus Knight 
Sixeonotus areolatus Knight (19294, p. 243). 
Not as yet taken in Illinois; known from 
Alabama, Arkansas, Mississippi, Texas. 
Pycnoderes Guerin 
Ee LOSS EECLES 
1. Legs black; tibiae paler apically; em- 
bolium with large pale spot near base 
and a slightly smaller one near apex. 
Re ee ot ae convexicollis, p. 60 
Legs pale; hind femora fuscous on api- 
calthalionly cy pee eee 
2. Emboliar margins strongly arcuate; a 
large pale spot on basal half of em- 
boliumapicalihall: blacks eee 
See er er et ees: drakei, p. 61 
Emboliar margins very slightly arcuate; 
embolium with small pale spot near 
base and also near apex, fig. 101.... 
.......medius, p. 60 
Pycnoderes convexicollis Blatchley 
Pycnoderes convexicollis Blatchley (1926a, 
p. 166). 
This is allied to medius Knight, but is 
larger, with the pronotum more strongly 
gibbous; the femora are all black except 
Fol 22a rhe 
at the bases, and the tibiae are very dark 
brown or nearly black, and with the apices 
almost white. 
Mave.—Length 3.40, width 1.50. Head 
width 0.67, vertex 0.39; front partly yel- 
lowish brown. Rostrum just reaching pos- 
terior margins of middle coxae. Antennae, 
first segment, length 0.30; second, 0.65; — 
third, 0.56; fourth, 0.61; pale yellowish, 
last two segments fuscous. Pronotum, 
length 1.04, width at base 1.25, height from 
basal angle 0.65; disk clothed with distinct 
white hairs, emboliar margins strongly arcu- 
ate, edge sharp; basal one-third with large 
translucent white spot, a small one just 
before apex; cuneus clear. Membrane light- 
ly infuscated; veins black. 
Known DistriputTion.—Described from 
Indiana. Now known also from Illinois. 
Illinois Records——MarsuHat_: Sept. 27, 
1934, Frison & Ross, 1 ¢. URBANA: July 
4, 1938, 1¢ ; Aug. 15, 19363Sarane jones 
1pAy eK, 
Pycnoderes medius Knight 
Pycnoderes medius Knight (1926e, p. 105). 
This is allied to dilatatus Reuter, but 
differs in its smaller size, fuscous membrane 
and broader, more heavily gibbous, bilobed 
pronotal disk, fig. 101; it “differs trom 
quadrimaculatus Guerin and incurvus (Dis- 
/ 
A 
Fig. 101.— Pycnoderes medius, 9. 
