SUBFAMILY II. — ANTHOCORHSL-E. 633 



Subfamily II. ANTHOCORIN^E Reuter, 1884, 55. 



Small oblong or elongate-oval species having the last two 

 joints of antennae fusiform or linear, sometimes compressed, 

 never filiform or pilose with long hairs ; hamus in the cell of 

 inner wings with a lower branch which extends down toward 

 the original vein ; front femora never much swollen ; front 

 tibiae of male simple, the apex not dilated. Four genera are 

 represented in our territory. 



KEY TO EASTERN GENERA OF ANTHOCORIN.E. 



a. Front lobe of pronotum narrow and subcorneal, its apex forming a 

 continuous outline with the cylindrical neck of head ; humeral 

 angles of pronotum dentiform or nodulose; membrane with only 

 one vein. I. Macrotracheliella, p. 633. 



aa. Pronotum trapezoidal, its outline not continuous with neck; humeral 

 angles not dentiform or nodulose; membrane with three or four 

 veins. 

 b. Collar of pronotum distinct; membrane with four veins, the inner 

 ones sometimes very faint; second joint of antenna? distinctly 

 longer than width of interocular area. 

 c. Sides of pronotum not or very slightly flattened ; corium not or 

 obsoletely punctate; sides of osteolar channel not elevated to- 

 ward apex. II. Anthocoris, p. 634. 

 cc. Sides of apical half of pronotum with the margins distinctly flat- 

 tened; corium rather densely and finely punctate; sides of oste- 

 olar channel elevated toward apex. III. Tetraphleps, p. 635. 

 bb. Collar of pronotum wanting; membrane with three veins; second 

 joint of antenna? not longer than width of interocular area. 



IV. Orius, p. 637. 



I. Macrotracheliella Champion, 1900, 322. 



Small oblong sparsely pubescent, shining species having the 

 head as long as pronotum and continuous with the outline of 

 the latter ; eyes distant from front of pronotum ; beak not 

 reaching front coxae ; pronotum with a short collar, its hind lobe 

 short, wide, with sides rapidly converging, the basal margin 

 rather deeply and widely concave and humeral angles either 

 prolonged as a short outward-projecting tooth or nodulose 

 above ; embolium of elytra narrow, linear ; mesosternum convex 

 with a short median carina in front ; osteolar channel long, 

 curved forward, and reaching both side and front margins of 

 metapleurum. Two species are known, one from Mexico and 

 Panama, the other from New England. 



