PTEROMALIDAE OF N.W. EUROPE 375 



lower down, the lower edge of their toruli about level with the ventral edge 



of the eyes ; sometimes both characters are present simultaneously . 125 



125 (124) Propodeum more than half as long as the scutellum, with a distinct costula 



(Text-figs. 312, 314) .......... 126 



- Propodeum usually without a costula, but if with indications of one then the 



propodeum is less than half as long as the scutellum . . . .129 



126 (125) Propodeum (Text-fig. 314) with panels of median area shiny, with some 



irregular wrinkles, but with little trace of fine reticulation . . .149 



- Propodeum with panels of median area uniformly reticulate and relatively 



dull ............. 127 



127 (126) Head in dorsal view (Text-fig. 428) notably transverse (2-5 to 2-6 times as 



broad as its maximum length). Antenna with first funicular segment at 

 least slightly longer than the pedicellus, and at least 1 -6 times as long as 

 broad ; funicle with sensilla numerous, arranged in two rows on all the 

 segments, or even three rows on some of them . AGGELMA Delucchi (p. 580) 



- Head in dorsal view (Text-figs. 425-427) not notably transverse (at most 2-25 



times as broad as its maximum length). Antenna with first funicular 

 segment usually not longer, sometimes slightly shorter, than the pedicellus, 

 and usually relatively shorter in proportion to its breadth than in the 

 above ; funicle with sensilla less numerous, usually arranged in one row on 

 each segment, rarely two irregular rows on the proximal segments . . 128 



128 (127) Gaster lanceolate, 4 to 5-5 times as long as broad, nearly twice as long as 



head plus thorax. Propodeum with costula slightly angulate in its 

 middle AGGELMA Delucchi (p. 580) 



- Gaster at most 2-5 times as long as broad, at most slightly longer than head 



plus thorax. Propodeum with costula straight or nearly so 



ABLAXIA Delucchi (p. 572) 



129 (125) Anelli, or at least the second anellus, quadrate or hardly transverse (Text- 



fig- 517) ... 13° 



- Anelli distinctly transverse, often strongly so . . . . . .131 



130 (129) Pronotal collar with a very sharp, usually very strongly raised, front margin. 



Propodeum (Text-fig. 522) nearly or quite half as long as the scutellum ; 

 median area reticulate ; plicae complete. All or most of the hairs of the 

 head and thorax whitish or pale . . EUMACEPOLUS Graham (p. 633) 



- Pronotal collar with at most a weak, hardly raised margin . . . 131 



131 (130) Pronotal collar finely though sharply margined throughout, or except just at 



the sides ; either the mesoscutum has several shallow though distinct 

 piliferous punctures, as well as the reticulation, or else the posterior ocelli 

 are large, separated by only about their own major diameter from the eyes. 

 Fore wing often with fuscous markings ...... 132 



If the pronotal collar is sharply margined throughout, then the mesoscutum 

 has no clearly distinguishable piliferous punctures and the posterior ocelli 

 are smaller, separated by distinctly more than their own major diameter 

 from the eyes. Fore wing usually immaculate ..... 133 



132 (131) Stigma of fore wing moderate-sized, often with a fuscous mark below and 



touching it. Propodeum very short, medially from hardly one quarter to 

 slightly more than one third as long as the scutellum ; plicae usually 

 weak or absent anteriorly ; median area often irregularly sculptured 



CECIDOSTIBA Thomson (p. 564) 

 Stigma of fore wing (Text-fig. 571) small ; fuscous markings, when present, 

 placed differently. Propodeum medially about half as long as the scutellum, 

 its median area uniformly reticulate ; plicae complete and sharp 



NEPHELOMALUS Graham (p. 697) 



