SYNOPSIS OF THE GENUS CHLOROTETTIX 



Key to the Species of Chlorotettix.* 



1. Vertex with anterior margin rounded, usually broadly curved, the length at 



middle equaling or slightly exceeding length next the eyes 2. 



Anterior margin of vertex distinctly but usually bluntly angulate; at least 

 one- third longer on the middle than next the eyes (except C. minimus) ... 14. 



2. Size small, not exceeding 5 mm. in length 3. 



Size larger, more than 6 mm. in length 4. 



3. With definite markings, elytral suture and two veins bordering claval veins, 



brown lineatus. 



Pale yellowish green without definite markings; length 4 mm., female 

 segment, produced at middle minor. 



4. General color brownish or sordid green, usually very dark 5. 



General color light, pale green, yellowish or whitish 6. 



5. Uniform sordid green without definite bands or stripes, often appearing 



almost black in color tergatus. 



Head pale with a broad brown band between the eyes; elytra dark with rather 

 broad, pale nervures. giving it a striped appearance necopinus. 



6. Vertex or elytra with red or dark markings 7. 



Vertex and elytra greenish or yellowish, unmarked 9. 



7. Margin of vertex with a broad red band between the eyes, elytra unmarked, 



female segment with a spatulate process rugicollis. 



Vertex without markings, elytra pale with darker stripes 8. 



8. Vertex narrower than pronotum, elytra greenish-white with four longitudinal 



brown lines, scutellum marked with brown vittatus. 



Vertex as wide as pronotum, elytra pale yellowish green, a dull, three-lobed, 

 fuscous stripe along the suture suluralis. 



9. Head subangulate. body quite narrow, a cross nervure between the two 



inner veins of the clavus occidentalis . 



Head rounded, almost parallel margined; body usually broad, inner veins of 

 clavus without a cross nervure .10. 



10. Female ventral segment broadly notched, a broad spatulate process extend- 



ing from its apex; male plates long, gradually tapering spatulatus. 



Female segment notched but without spatulate process 11. 



11. Size large, 7.5 mm. broad, female segment with notch or incision, sides not 



toothed 12. 



Smaller not exceeding 7 mm., narrower, female segment with sides of notch 

 each bearing a lateral median tooth 13. 



12. Female segment evenly, somewhat concavely and rather deeply notched, 



male plates narrowed at half their length then produced unicolor. 



Female segment narrowed posteriorly, lobes strongly concavely rounded to 

 median notch which terminates anteriorly in an incision similis. 



13. Color bright apple green, female segment with short, blunt, lateral tooth, 



male plates very short, broadly rounded viridius. 



Color yellowish green, female notch narrower, lateral tooth more produced 

 and rounded, male plates long, gradually tapering to apices curridens. 



14. Vertex with a distinct, transverse band across middle between the eyes 15. 



Vertex without definite markings in the form of spots and bands 17. 



15. Size large, 7.5 mm., distinctly reddish brown in color .' lusorius. 



Size smaller, not exceeding 6 mm. in length, color yellowish green 16. 



16. Band on vertex narrow, scutellum without color markings; female segment 



with well rounded notch, lobes either side broad lobatus. 



Band broader, distinct; basal angles of scutellum each with a large black spot 

 which extends under pronotum, female segments with rather sharp 

 lateral angles scutellatus. 



17. Not exceeding 6.5 mm. in length 18. 



Larger, 7 mm. or more in length 24. 



*The specimens of three species, C. emarginatus Baker, breviceps Baker, and 

 tethys Van Duzee, could not be obtained so are not included in the key. The original 

 descriptions are quoted at the end of this paper. 



