Vol. 1.] Van Duzee. — Synoptical Keys to Genera of Miridae. 215 



Head not or scarcely produced, when viewed from the side having the 

 facial angle nearly or quite a right angle 10 



1. Clypeus broad, depressed; first antennal joint not or scarcely sur- 



passing clypeus 3. Sthenarus Fieb. 



— Clypeus prominent, convex 2 



2. Femora black or pale and dotted in longitudinal series; rarely pale 



without dots, then with tibiae dotted and marked with a darker 

 or black spot at base 3 



— Femora pale and irregularly dotted with darker or black; often with- 



out dots, then with tibiae pale without black points 7 



3. Head rostrate-produced, projecting before the eye for a distance much 



greater than length of eye; second antennal joint broadly flattened 

 in the male; femora black 5. Criocoris Fieb. 



— Head not produced before the eye for a space greater than width of 



the eye; second antennal joint linear in both sexes 4 



4. Femora black; body above conspicuously clothed with white hairs. 



10. Apocremnus Fieb. 



— Femora pale, dotted in longitudinal series; rarely black, then the body 



above with a fine pale pubescence only 5 



5. Tibiae dotted; antennae with second joint uniformly colored, or if 



partly colored jtaler at middle or apex 6 



— Tibiae pale without dots, bristles only dark; femoral dots sometimes 



obsolete above; antennae with second joint black on apical half. 

 7. Rhinocapsus Uhl. 



6. General color of whole body red or reddish-brown 



8. Gerhardiella Popp. 



— General color pale, whitish or tinged with yellow, marked more or less 



with fuscous or black areas, sometimes entirely black 



9. Plagiognathus Fieb. 



7. Femora pale and irregularly dotted, at least below 2. Psallus Fieb. 



— Femora pale without dots 8 



8. Color uniformly black or nearly black above, legs pale 9 



— Color pale, more or less marked with fuscous or black above 



1. Reuteroscopus Kirk. 



9. First antennal joint surpassing clypeus by more than half its length; 



body jiolished and nude above 6. Microphylellus Eeut. 



— First antennal joint scarcely surpassing apex of clypeus; body above 



clothed with pale pubescence 4. Leptotylus n. gen. 



10. Vertex distinctly carinate at base; rostrum short, but little surpassing 



the anterior coxae 15. Myochroocoris Reut. 



— Vertex without a basal carina; rostrum longer 11 



11. Second antennal joint linear, neither clavate nor flattened 12 



— Second antennal joint clavate or flattened and broader than first 



joint 21 



12. Clypeus well distinguished from the front by an incised suture 13 



— Clypeus confused with the front or with suture very obscure; size 



small (2-3 mm.) 17 



