120 



STBPHIDJE. 



the tips of the auxiliary and the first vein ; 

 Bubapical cross-vein not bent towards its 

 middle and with no stump at that point ; first 

 antennal joint more or less elongate, almost 

 exceeding the second in length. 



2 (13) Third antennal joint bare, more or less elongate; 



aiista developed as usual; face without fur- 

 rows, or these only slightly developed. 



3 (4) Abdomen narrow and stalked, the second seg- 



ment being very much constricted towards its 

 middle, and there much narrower than the 

 thorax ; thorax and legs bare ; scutellum with 

 two spines Giicur I. 



4 (3) Abdomen not stalked, mostly very broad, and at 



least as broad as the thorax. 



5 (12) Third antennal joint as long as or shorter than 



the first, pendulous; second joint well de- 

 veloped, sometimes almost as long as the 

 third : eyes of male with a prominent angle 

 in the middle of the frons, slightly convergent ; 

 thorax and head with a very short pilosity. 

 G (7) Antennae very short and thick, the third Joint 

 ovate, as long as the first; smallish, short 

 species, with almost rounded abdomen ; 

 scutellum deeply emarginate at end ; ocelli 

 distant; legs and thorax rather pilose GROUP II. 



7 (6) Antennas of the ordinary length, the third joint 



shorter than the first, which is usually thin. 



8 (9) Scutellum with strong spines ; ocelli distant ; 



legs and thorax pilose ; short, rounded, 

 aeneous species, very much resembling the 

 European ones GROUP III. 



9 (8) Scutellum rounded, without spines, neither 



dentate nor emarginate ; ocelli in contact 

 with each other, forming a single tubercle ; 

 legs bare ; rather elongate species, usually of 

 considerable size, and often very striking in 

 coloration. 



10 (11) Body almost cylindrical, brown and blackish 



coloured, very strongly punctate ; third 

 antennal joint rather short ; second abdominal 

 segment depressed in the middle and produced 

 on each side; first joint of hind tarsi greatly 

 swollen GKOUP IV. 



11 (10) Body not cylindrical, the abdomen being usually 



broader than the thorax even if elongate, its 

 second segment not produced on each side or 

 only very rarely ; punctuation slighter and 

 coloration more striking; first joint of hind 

 tarsi not or not so much swollen ; third 

 antenral joint usually elongate GROUP V. 



12 (5) Third antennal joint enormously elongate, erect, 



4 to 5 times as long as the first ; second joint 

 very short, almost rudimentary ; eyes of male 

 with scarcely any trace of a prominent angle 

 and very widely separate ; ocelli distant ; 

 thorax, head, and leo-s clothed with long hair. GROUP VI. 



