642 



M. W. R. de V. GRAHAM 



(7) Basal cell of fore wing with at least a few hairs distally, as well as those on the 

 basal vein. Dorsellum, at least mainly, reticulate and dull. Upper tri- 

 angular area of mesepisternum at least mainly reticulate. Large species, 

 length 2-5 to 3-7 mm. Gaster not longer than thorax (if about as long as 

 head plus thorax, see pinus Hussey, p. 680) spermotrophus Hussey (p. 680) 



Basal cell of fore wing, not counting any hairs which may be present on the basal 

 vein, usually bare ; if with a very few isolated hairs distally, then the dor- 

 sellum is mainly shiny and weakly sculptured or smooth, and the upper tri- 

 angular area of the mesepisternum is mainly smooth. Species often relatively 

 smaller ............ 9 



Antennae with two anelli and six funicular segments, the third flagellar seg- 

 ment sometimes shorter than the fourth but always provided with sensilla 10 



Antennae with three anelli and five funicular segments, the third flagellar 

 segment not only distinctly shorter than the fourth but also lacking 

 sensilla ............ 13 



Head in dorsal view (Text-fig. 531) relatively strongly transverse, 2-2 to 2-4 

 times as broad as long. Gaster not or hardly longer than head plus thorax. 

 Lower edge of antennal toruli at level of ventral edge of eyes, the toruli about 

 twice as far from the median ocellus as from the anterior margin of the 

 clypeus ............ 30 



Head in dorsal view usually only i-8 to 2 times as broad as long ; if slightly 

 more than the gaster lanceolate and much longer than head plus thorax, 

 and the lower edge of the antennal toruli slightly above the ventral edge of 

 the eyes ............11 



11 (10) Antennae with combined length of pedicellus and flagellum equal to breadth 



of head. Gaster lanceolate, acuminate, much longer than head plus 

 thorax ; last tergite much longer than its basal breadth. Pronotal collar 

 weakly margined. Thorax 1-5 to i-6 times as long as broad. Head and 

 thorax bronze-green to bronze . . . juniperinus v. Rosen (p. 670) 



- Combined length of pedicellus and flagellum slightly less than breadth of head. 



Gaster at most slightly longer than head plus thorax ; last tergite at most 

 slightly longer than its basal breadth. Pronotal collar sharply margined, 

 the carina sometimes strongly raised. Thorax 1-7 to 1-75 times as long as 

 broad. Head and thorax bright green to blue, or golden green . . 12 



12 (11) Anterior margin of clypeus shallowly to moderately deeply emarginate 



medially. Fore wing with stigmal vein slightly bisinuate or nearly straight ; 

 parastigma usually somewhat darker than the rest of the venation, some- 

 times also the stigmal vein. Head, Text-fig. 537. 



fasciiventris Westwood (p. 666) 



- Anterior margin of clypeus (Text-fig. 528) deeply incised medially. Fore 



wing with stigmal vein evenly curved ; parastigma not darker than the 



rest of the venation ..... jucundus (Walker) (p. 667) 



13 (9) Mesoscutum only 1-2 to 1-25 times as broad as long, strongly reticulate and 



rather dull. Antenna (Text-fig. 538) with three anelli and five funicular 

 segments ; the third anellus about quadrate. Anterior margin of clypeus 

 very shallowly emarginate, almost truncate. Upper triangular area of 

 mesepisternum having its lower part reticulate tnesostenus sp. n. (p. 664) 



Either the mesoscutum is at least 1 -35 times as broad as long ; or the antennae 

 have two anelli and six funicular segments ; or the third anellus is trans- 

 verse ; or the anterior margin of the clypeus is distinctly emarginate . . 14 



14 (13) Tip of hypopygium situated at two thirds to three quarters the length of the 



gaster, and sometimes very prominent ; the gaster not or hardly longer 



than head plus thorax ......... 15 



