PTEROMALIDAE OF N.W. EUROPE 181 



with a very short, longitudinal impressed line at the base ; frenum reticulate, separated from 

 the rest of the scutellum by a fine impressed line. Dorsellum large, about as long as scutellar 

 frenum, convex, weakly sculptured, sloping steeply with respect to the dorsal surface of the 

 scutellum. Propodeum sloping at about the same angle as the dorsellum, medially somewhat 

 longer than the latter, only slightly produced beyond the bases of the hind coxae, lightly 

 reticulate ; median carina straight, usually distinct ; plicae absent or indicated only posteriorly ; 

 nucha represented by a shiny, transversely-lunate strip ; supracoxal flanges very narrow, 

 sublinear ; spiracles circular, close to metanotum, spiracular sulci shallow. Postspiracular 

 sclerite reticulate, without an oblique carina. Mesosternal mesolcus distinctly impressed. 

 Mesepimeron marked off from mesepisternum. Legs rather stout ; dorsal surface of hind 

 coxae bare ; hind tibia with two spurs. Fore wing with basal cell with some hairs distally 

 on the upper surface ; basal vein more or less pigmented, but in its lower half only ; speculum 

 moderate-sized, extending as far as the base of the marginal vein ; marginal vein at most 1-5 

 times as long as the stigmal vein ; postmarginal at least slightly longer than the marginal ; 

 stigmal vein rather strongly curved, but not forming a very acute angle with the postmarginal 

 vein ; stigma small to moderate-sized. 



Gastral petiole inconspicuous, transverse, nearly smooth. Gaster of female ovate, about as 

 long as thorax ; hind margin of basal tergite entire or at most very shallowly emarginate 

 medially. 



Nodisoplata is very close to Seladerma Walker, which differs as follows : 



Anterior margin of clypeus with three asymmetric teeth. Combined length of pedicellus and 

 flagellum in female equal to or greater than breadth of head, in male at least slightly greater 

 than breadth of head. 



Key to Species 



(Males) 



1 Marginal vein of fore wing 1 -4 to 1 -5 times as long as the stigmal vein, stigma small. 

 Combined length of pedicellus and flagellum slightly less than breadth of head ; 

 pedicellus distinctly longer than first segment of funicle, sometimes nearly twice as 

 long. Malar space about one third the length of an eye. (Europe) 



diffinis (Walker) (p. 181) 



- Marginal vein of fore wing hardly longer than the stigmal vein, stigma moderate- 

 sized. Combined length of pedicellus and flagellum almost equal to breadth of 

 head ; pedicellus not longer than first segment of funicle. Malar space hardly 

 more than one quarter the length of an eye. (Amurland) . viridipes (Walker) (p. 182) 



(Females) 



1 Marginal vein of fore wing 1 -4 to 1 -5 times as long as the stigmal vein. Combined 

 length of pedicellus and flagellum distinctly less than breadth of head ; pedicellus 

 distinctly longer than first segment of funicle ; funicular segments transverse, the 

 first only slightly, the distal segments rather strongly so . diffinis (Walker) (p. 181) 



The female of viridipes (Walker) is unknown. 



Nodisoplata diffinis (Walker) comb. n. 



Lamprotatus diffinis Walker, 1874 : 314, o* [nee Miscogaster diffinis Walker, 1833]. 



Lamprotatus curvus Thomson, 1876a : 228, o* ?, syn. n. 



Lamprotatus Amurensis Dalla Torre, 1898 : 187 syn. n. (n. n. for Lamprotatus diffinis Walker, 



1874). 

 Telepsogos curvus (Thomson) Delucchi, 1955 : 34, 36-38, <J $. 



