PTEROMALIDAE OF N.W. EUROPE 145 



Toxeuma Walker; Schmiedeknecht, 1909 : 291, 296. 

 Toxeuma Walker; Nikol'skaya, 1952 : 246. 

 Toxeuma Walker; Delucchi, 1955 : 7, 91. 

 Toxeuma Walker; Graham, 1959 : 101-106. 

 Toxeuma Walker; Peck et at., 1964 : 37. 



The species were revised by Graham (1959). 



Key to European Species 



(Males and Females) 



1 Gaster (Text-figs. 115, 116) alutaceous except for the major part of the basal 



tergite ; that of the female usually lanceolate, about three times as long as 

 broad and at least as long as head plus thorax, occasionally only twice as 

 long as broad in one uncommon form, with the basal tergite occupying at 

 most one third of the total length. Pronotal collar (Text-fig. no) less 

 prominent at the shoulders ; mesoscutum and scutellum with relatively 

 finer sculpture ; head and thorax usually bright green, blue-green, or 

 golden green. Petiole of gaster in female nearly twice as broad as long . 2 



Gaster mainly smooth and shiny, only the last two tergites are more or less 

 alutaceous ; that of the female (Text-figs, in, 112) ovate, at most twice as 

 long as broad, not longer than the thorax, with the basal tergite occupying 

 at least half the total length. Both sexes with the shoulders of the pronotal 

 collar (Text-fig. 113) prominent and subrectangular ; mesoscutum and 

 scutellum with relatively coarser sculpture. Petiole of gaster varying from 

 longer than broad to slightly transverse ....... 3 



2 (1) Gaster of female (Text-fig. 115) lanceolate, at least slightly longer than head 



plus thorax, 2-9 to 3-5 times as long as broad ; last tergite 1 -6 to 2 times as 

 long as its basal breadth. Gaster of male as in Text-fig. 116 



fuscicorne Walker (p. 147) 

 Gaster of female ovate to lanceolate-ovate, somewhat shorter than or barely 

 as long as head plus thorax, 2 to 2-7 times as long as broad ; last tergite at 

 most 1-2 times as long as (sometimes not longer than) its basal breadth. 

 Male not distinguished from that of fuscicorne, of which it is perhaps only 

 a form . . . . . . . . . . sp. indet. (p. 148) 



3 (1) Sculptured part of petiole (Text-figs. 112, 114) longer than broad and almost 



as long as the propodeum. Gaster of $ (Text-fig. 112) slightly more than half 

 as long as the thorax, hardly 1-5 times as long as broad, with basal tergite 

 occupying about three quarters of its total length. Head (Text-fig. 113) 

 larger, almost 1 -5 times as broad as the mesoscutum, with temples longer and 

 converging in a relatively straight line behind the eyes. <$ antenna, text-fig. 

 121 ........ subtruncatum Graham (p. 148) 



Sculptured part of petiole quadrate to slightly transverse, much shorter than 

 the propodeum. Gaster of $ (Text-fig. in) normally about three quarters 

 as long (sometimes as long) as the thorax, and 1-5 to 2-0 times as long as 

 broad, with basal tergite occupying about half its total length or slightly 

 more. Head 1-2 to 1-25 times as broad as the mesoscutum, with temples 

 shorter and slightly more rounded off behind the eyes .... 4 



|. (3) Legs mainly metallic, at most the trochanters partly, the knees, tips of the 

 tibiae, and base of the tarsi, testaceous. Mandibles mainly fuscous. 

 General colour of head and thorax dark blue-green. $ only : antennal 

 funicle (Text-fig. 118) with at most segments one to three quadrate, four 

 slightly transverse, five and six distinctly so ; scape metallic. (J only : 



