338 



FAMILY XI. — LYG^ID^E. 



bb. 



-Ocellus 



Post ocular .space 



Elytra and upper surface, except the membrane, more or less dis- 

 tinctly punctate; hind margin of pronotum between scutellum 

 and lateral angles not impressed or depressed ; inner veins of 

 membrane not connected by a cross vein. 



Subfamily II. Cymin^e, p. 356. 



Front femora, as compared with the others, more or less shortened 



and swollen, armed or unarmed; hind margin of pronotum in 



front of scutellum not turned down convexly; ventral surface of 



abdomen, at least the sixth segment, with spiracles. 



d. All the abdominal spiracles 

 % u. £> not placed ventrally, at 



most only the three api- 

 cal segments with them; 

 front femora usually 

 only moderately swollen 

 and commonly unarmed; 

 rarely (Ischnodemus) 

 much swollen and 

 armed. 

 . Elytra not convex, almost 

 if not wholly impunc- 

 tate; head always nar- 

 rower than hind mar- 

 gin of pronotum; tylus 

 not sulcate; clavus not 

 narrowing toward 

 apex, the commissure 

 distinct, at least half as 

 long as scutellum. 

 / N^i— - — T~| / Subfamily III. 



/ \ V \ I Blissin^e, p. 363. 



"-. Elytra convex and plainly 

 punctate; head across 

 eyes as wide or wider 

 than hind margin of 

 pronotum (fig. 80) ; 

 tylus usually sulcate; 

 clavus narrowing to- 

 ward apex, the com- 

 missure absent or very 

 short. Subfamily IV. 

 Geocorin^e, p. 372. 

 All the abdominal spiracles placed on the ventral surface; front 

 femora more or less swollen and always armed beneath (fig. 

 69). 

 Front femora strongly swollen, armed beneath with numerous 

 teeth; corium not extending over sides of abdomen, its outer 

 vein not parallel with costal margin ; hind coxae not widely 

 separated; bucculae short, confined to front of head. 



Subfamily V. Pachygronthin.«, p. 379. 



Fig. 70. Ligyrocoris cliff usus (Uhler) ; lat 

 eral view illustrating Lygaeid structures 

 Greatly enlarged. (After Barber in Hemip 

 tera of Connecticut). 



dd. 



