ENEMIES OF APHIDES. 167 



22. — Membrane marbled ... ... F/iy focoris (Fa\\.). 



23. — Membrane not marbled ... ... Oficognai/ius (Fieh.). 



24. — Rostrum not produced beyond the pos- 

 terior coxse 

 25. — Species not deeply punctured nor rugose 

 26. — Second joint of antennae not clavate ... Calocoris (Fieb.). 

 27. — Second joint of antennae strongly clavate Rhopaltomus (Fieb.). 

 28. — Species deeply punctured or rugose ... 

 29. — Surface glabrous, both sexes macropterous Capsus (Fab.). 

 30. — Surface hairy, female generally brachy- 



opterous ... ... ... Bothynotus{T\eb.). 



31. — Medium-sized or small species ; vertex of 



head completely or only in part (near 



each eye) divided from the neck by a 



transverse carina or rounded margin... 

 32. — Vertex carinated, at least near the eyes. 

 33. — Hemelytra and nervures of membrane, 



scarlet ... ... ...Dichrooscytus{Y\&h.). 



34. — Hemelytra not scarlet 



35. — Pronotum scarcely convex, transversely 



rugose, elytra glabrous ... ... Flesiocorts {Y'xth.). 



36. — Pronotum convex, not transversely rugose, 



hemelytra more or less pubescent ... 

 37. — Species not clothed with scattered, 



deciduous, golden pubescence 

 38. — Head very wide, rostrum reaching beyond 



the posterior coxae ... ... Zygimus {Y\eh.). 



39. — Head not very wide, rostrum reaching 



to about the posterior coxae . . . Lygus (Hahn). 



40. — Species clothed with deciduous golden 



pubescence ... ... ... Fceciloscytus {Y'leh.). 



41. — Vertex not carinated, but with a rounded 



margin posteriorly, visible especially 



near the eyes, elytra glabrous 

 42. — Second joint of the antennae shorter than 



the third and fourth together ... Liocoris (Fieb.), 



43. — Second joint of antennae longer than 



the third and fourth together Camptobrochis (Fieb.). 



