SUBFAMILY IX. — PHYLINI. 921 



clavus and corium often more or less tinged with brownish, the latter 

 sometimes with an irregular transverse pale brown band across apical 

 third; cuneus brownish, its base pale; membrane dusky, iridescent, the 

 smaller cell and a spot near tip of cuneus blackish, veins yellowish; legs 

 pale yellow, femora with a row of minute brown spots on lower face, 

 apical half flecked above with brown. Antenna? yellowish or yellowish- 

 brown, sparsely clothed with short stiff black hairs, joint 1 two-thirds 

 as long as width of vertex; 2 three and one-half times as long as 1; 3 

 and 4 subfiliform, 3 two-thirds the length of 2, 4 one-third as long as 3. 

 Length, 4.5 — 5.2 mm. 



Deal and Chiltern Hills, England, August (British Mus. Coll.). 

 Known in this country only from Massachusetts. Occurs in 

 England on tansy, Tanacetum vulgare L., and yarrow, Achillea 

 millefolium L. 



Tribe III. PHYLINI Van Duzee, 1916a, 204. 



This tribe, as characterized in the key, p. 914, contains the 

 great majority of our eastern species of the subfamily 

 Phylinse, the tribe being represented in the eastern states by 

 16 genera. For convenience of treatment these are separated 

 into two groups or subtribes. 



KEY TO SUBTRIBES OF TRIBE PHYLINI. 



a. Pubescence, when present, composed of a single type of fine, sub- 

 erect or prostrate hairs; upper surface sometimes nearly glabrous. 



Subtribe I, p. 921. 

 aa. Pubescence composed of closely appressed tomentose or scale-like 

 deciduous hairs, usually intermixed with more erect ones. 



Subtribe II, p. 949. 



Subtribe I. — Phylini. 



KEY TO GEXERA OF SUBTRIBE I, PHYLINI. 



a. Second antennal distinctly longer than width of head across eyes; 

 front of head more or less produced, the facial angle, when 

 viewed from the side (the angle between the lower margin of buc- 

 culae and tylus) less than a right angle. 

 b. Vertex without an impression each side near eye; joint 3 of hind 

 tarsi usually slightly shorter than 2. 

 c. Tibiae pale, their spines usually dark but without black spot at 

 base. 

 d. Joint 2 of antennae slender, distinctly thinner than joint 1 ; tylus 

 flat, confluent with front; upper surface chiefly brown or 

 blackish, sometimes in part pale. 

 e. Joint 1 of antennae not or scarcely passing tip of tylus; spines 

 of tibiae pale. I. Sthenarus, p. 922. 



ee. Joint 1 of antennae distinctly passing tip of tylus; spines of 

 tibiae black without spots at base. II. Microphylellus, p. 923. 



