PROCEEDINGS, 1917. 89 



black spot on caudal margin; yellow spot absent; each segment bearing a narrow trans- 

 verse band of rusty red or darker color, almost to purplish black at base and at middle. 

 Legs dull yellowish, with rusty darker markings; tarsi black. Antennae dark reddish 

 or brown almost to black, lighter at proximal ends of III and IV. Length of body, 3.5 

 mm. to 4.2 mm.; width of head at eyes .94mm. to .96 mm. 



The following description of the adults of the two varieties found in Nova Scotia 

 are copied from Knight's monograph:* 



LYGUS PRATENSIS VAR. OBLINEATUS SAY. 



"Ovate, shining; yellowish brown with more or less blackish marking, or reddish 

 brown and fuscous; pronotum with yellowish and blackish rays; scutellum margined 

 with blac • ish, leaving a Y — or heart shaped area yellowish; hemelytra reddish brown or 

 blackish, streaked with yellowish or grey. 



Male. Length 4.9-5.5 mm. Head: width across eyes 1.11 mm., vertex .45mm., 

 length .51 mm., height at base .65 mm.; impunctuate shining; carina nearly straight 

 indented just in front on vertex; yellowish brown or reddish to blackish, the darkest 

 forms blac'dsh on the tylus and the median line on the front with one or two shorter 

 rays at each side. Rostrum, length 2.28mm., reaching posterior margins of hind coxae, 

 yellowish brown to reddish brown,'apex blackish. 



Antennae: segment I, length, .51mm.; II, 1.46 mm.; Ill, .88 mm.; IV. .74 mm.; 

 yellowish brown to reddish brown, last two segments and apical one-third of second seg- 

 ment blackish; darkest forms entirely blackish with brownish only on middle third of 

 segment II. 



Pronotum: length 1.25 mm., width at base 2.17 mm., width at anterior angles 

 1.03mm., collar .77mm., deeply and irregularly punctured, calli smooth and shining, de- 

 limited behind and between by an impressed line; yellowish brown to reddish brown 

 with blackish; blackish on the calli with two spots or rays behind each callus, also 

 blackish at basal angles of disk and in some cases extending as a ray along the side mar- 

 gins; yellowish or brownish between the blackish rays and narrowly along basal and side 

 margins of disk; f ne pale depressed pubescence. Scutellum dull yellowish or reddish 

 brown in the pale forms, with two black dashes at middle of base and a brownish line on 

 each side paralleling the margin; dark forms with the pale color reduced to a Y or even 

 to three pale dashes; transversely rugose across the middle. Sternum dark reddish 

 brown to blackish, paler on the sides; pleura reddish brown to blackish, margins and 

 orifice paler. 



Hemelytra: greatest width 2.5 mm.; coarsely and deeply punctate, heaviest on 

 clavus; fine pale depressed pubescence; pale forms, yellowish brown to reddish brown; 

 darker at apex of corium; dark forms, gray brown to blackish, paler on claval vein, bra- 

 chium, cubitus and embolium;cuneus translucent, dark brownish to reddish black bor- 

 dering base and at apex. Membrane fuscous, paler in the middle; bordering the cun- 

 eus, the veins and a marginal spot just beyond the apex of the cuneus, pale. 



Legs: yellowish brown, reddish yellow, or blackish, the posterior femora twice an- 

 nulated near apices with darker; dark forms with coxae and femora blackish, annulated 

 with paler near apex of femora; tibiae with two blacl ish marks near base; tibial spines 

 tips of tibiae, and tarsi, brownish to blackish. 



Venter: yellowish brown, reddish brown, or dark reddish to blackish, the sides with 

 a longitudinal pale stripe; genital claspers distinctive of the species; shape of claw on 

 right clasper separates the species from its nearest relatives." 



*Knight H. H., A revision of the Genus Lygus as it occurs in America North of 

 Mexico, with Biological data on the species from New York, Cornell University Agri- 

 cultural Experiment Station. Bulletin 391, 1917. 



