56 IOWA STUDIES IN NATURAL HISTORY 
tured with black. Head long, with a median, slightly raised line con- 
tiguous with the somewhat elevated juga and reaching to the posterior 
border; a shorter, somewhat elevated line on either side of this; juga 
slightly longer than tylus, the apex narrow; subapical tooth large, obtuse, 
almost attaining anterior margin of head. Antennae black with narrow 
basal portions of segments one, two, three and four pale. Rostrum long, 
slender, extending on to third visible ventral segment; pale, with apex of 
second segment and entire apical segment fuscous. Pronotum much more 
coarsely punctured on basal than anterior part; antero-lateral margins 
usually armed with four or five irregular, unequal, acute teeth; posterior 
angles extending in short, prominent, subtruncate processes, somewhat 
dilated and bearing two or three small teeth. Scutellum coarsely punce- 
tured, the coarse punctures more freely interspersed with finer ones near 
the top which is bluntly rounded and more or less distinctly impressed on 
the middle; immediately anterior to this depression the median longi- 
tudinal area is raised into a more or less distinct carina which extends 
forward to the base; basal portion of scutellum distinctly raised and 
somewhat rugose. Hemelytra rather finely punctate; nervures of the 
whitish membranous portion black and with black arborescent lines between. 
Mesosternum with an irregularly transverse black area at middle. Venter 
broad, yellowish gray to brownish, covered more or less regularly with 
short grayish pubescence; irregularly, sparsely punctate with brown on 
middie, more densely and finely punctate at sides. Stigmata black; just 
posterior to each opening is an oval, depressed, finely punctate, black area 
which is continued for about one-third the distance towards the median 
Jine as a narrow groove bearing fine punctures and showing distinctly as 
a dark line. Femora dark brown, pale at base, more or less distinctly 
annulate with pale near tips; tibiae also annulate with pale; a pale spot 
on outer side of first and third tarsal segments, the second segment en- 
tirely pale. Length, 13.5-17.0 mm. Width across pronotum, 8.0-9.0 mm. 
Although subject to some variation in the form of the apex of 
the head, the punctuation of the scutellum and the armature at 
the sides of the pronotum, the present form usually may be 
recognized from our other two representatives of the genus by 
the fact that the lateral thoracic angles extend in short, sub- 
truncate processes which are produced into a distinct tooth, and 
the apical portion of the scutellum is proportionately more 
narrowed and impressed on the median line; in addition, the 
juga are usually a little longer than the tylus and the subapical 
tooth is large, almost reaching the tip of the head. 
Brochymena arborea is widely distributed over the United 
States and Canada and extends southwest into Mexico. In 
Towa it is not as abundant as B. quadripustulata. Five speci- 
