PTEROMALIDAE OF N.W. EUROPE 369 



Postmarginal vein of fore wing about as long as, or even a little longer than, 

 the marginal vein. Pronotal collar at most weakly margined in the middle. 

 Left mandible with three teeth, right mandible with four ... 89 



89 (88) Anterior margin of clypeus deeply emarginate, almost incised, medially. 



Scutellum more shiny, its sculpture not distinctly raised, or even mainly 

 engraved. Fore wing (Text-fig. 308) : stigmal vein strongly curved. 

 Antennal funicle subcylindric ; the clava a little broader than the funicle 



PSYCHOPHAGUS Mayr (p. 473) 



- Anterior margin of clypeus shallowly emarginate, almost truncate. Scutel- 



lum duller, its sculpture distinctly raised above the general surface. Fore 

 wing : stigmal vein nearly straight. Antennal funicle thickening slightly 

 distad, the flagellum therefore slightly clavate CHLOROCYTUS Graham (p. 611) 



90 (83) Hind tibia with two distinct apical spurs ...... 91 



- Hind tibia with only one apical spur . . . ... . .92 



91 (90) Fore wing either with two fuscous clouds present ; or else the marginal vein 



shorter than, or at most as long as, the stigmal vein. Pronotal collar not 

 margined, rounded off into the neck region. Propodeal nucha not 

 developed. Clypeus reticulate, without or with at most a few indistinct 

 striae. 



Fore and hind femora more or less swollen . . . . .204 



- Fore wing hyaline or faintly greyish ; marginal vein at least slightly longer 



than the stigmal vein. Either the pronotal collar is margined, or else the 

 propodeum has a nucha. Clypeus mainly to entirely striate . . 92 



92 (91) Clypeus (Text-fig. 307) with coarse radiating striae which extend well up the 



genae and face ; marginal vein of fore wing twice, or slightly more than 

 twice, as long as the stigmal vein, postmarginal vein much shorter than the 

 marginal ; propodeal nucha represented merely by a narrow, transversely- 

 aciculate to smooth strip ; pronotal collar long, medially one fifth length of 

 mesoscutum or slightly more, finely but sharply margined except at the 

 sides. Antennal scrobes rather deep . . HOBBY A Delucchi (p. 596) 



- Striae of clypeus when present nearly always finer and hardly extending on to 



the genae or face ; if they do extend up somewhat more, then the mar- 

 ginal vein of the fore wing is less than twice as long as the stigmal vein 

 and /or the propodeum has a large reticulate nucha. 93 



93 (92) Anterior margin of clypeus (Text-figs. 361, 393, 528) deeply incised medially, 



or bidentate ........... 94 



- Anterior margin of clypeus not deeply incised ; at most moderately emar- 



ginate as in Text-fig. 526 ; sometimes with a median tooth . . . 102 



94 (93) Propodeum (Text-fig. 360) with a reticulate nucha which occupies nearly 



half of its length and is not sharply-defined anteriorly ; plicae absent. 

 Fore wing (Text-fig. 359) most often with two fuscous clouds, one below 

 the stigma, the other below the proximal part of the marginal vein. 

 Clypeus striate . . . . . . SPILOMALUS Graham (p. 479) 



- Propodeal nucha represented merely by a lunate strip which is weakly 



sculptured or smooth, and is usually defined anteriorly by a sharp edge. 

 Fore wing often immaculate, if with fuscous clouds then the clypeus is 

 mainly reticulate .......... 95 



95 (94) Antennae inserted low down, the lower edge of the toruli not or hardly above 



the level of the ventral edge of the eyes ; marginal vein of fore wing 2 to 2 -25 

 times as long as the stigmal vein. Body green ; antennae and legs mainly 

 yellowish. Median area of propodeum shiny, at most weakly sculptured ; 

 spiracular sulci extremely shallow and smooth 



MESOPOLOBUS Westwood (p. 638) 



