EXPERIMENT STATION BULLETINS. 



269 



DESCRIPTION OF IMAGO f FIG. 1.) 



Color bright green. Head yellowish, triangular, broad. Eyes globular y 

 yellowish, with a dark center. Antennas nearly as long as the body, four- 

 jointed, hairy, yellowish at base becoming dusky toward the last joint, which 



is nearly black. Hairs on first two joints dark, 

 on last two light. First joint heavy, short, and 

 black at base; second four times as long as 

 first, third two thirds as long as second, fourth 

 one half as long as third; all but the first joint 

 slender. Rostrum (Fig. 1, a) or beak yellow- 

 ish; four joints; reaches to middle legs. First 

 joint robust, the remaining three slen- 

 der, the last one longest and black except 

 at base. Pronotum — upper part just back of 

 ^, head — trapezoidal, widest behind, yellowish 

 varying to green. The posterior two thirds is 

 often distinctly green. A depressed trans- 

 verse line cuts off from the front about one 

 third, which part is also divided by a longitud- 

 Fig. 1. inal median line, into equal portions each of 



which has a central rounded elevation. The pronotum is margined. 

 The scutellum varies in color and is green or yellowish. The legs like 

 the whole underside are greenish yellow; the feet or tarsi black at base 

 and tip and light in the middle. The claws are black. The hemelytra 

 or wing covers are green. The clavus (Fig. 1, d) is dark green; the corium 

 (Fig. 1, e) lighter; the emboli um (Fig. 1, f) is narrow and still lighter, 

 though the depressed line separating it from the corium is very deep 

 green. The cuneus (Fig. 1, g) is indistinctly differentiated. The whole 

 upper portion of head, thorax, and base of wing-covers is specked with 

 short, stiff, black hairs. The membrane (Fig. 1, h) is smoky, with a wide 

 greenish basal margin which is dusky centrally and abreviated externally. 

 The narrow internal margin of the membrane is black. The insect is a 

 little more than four mm. (16-100 in.) long and about one third as broad. 

 These bugs are a very serious enemy to the hollyhock. They swarm 

 upon these plants early in the season, and often so suck out the juices or 

 sap that the plants become blighted and not infrequently wither and die. 

 This year we treated these insects with the kerosene hard soap emulsion 

 (No. 2), the pyrethro-kerosene emulsion, and with sludgite. The plants 

 treated with the two emulsions were entirely freed of the pests while the 

 sludgite apparently did no good. 



THE YELLOW-LINED CURRANT BUG. 



This insect (Fig. 2) is not- uncommon in Michigan, and is easily found 

 every summer, but the past season they have been uncommonly numerous 

 and destructive. We have had as many as three letters a day complaining 



