ICHNEUMON-FLIES, PART 2 1 EPHIALTINAE 17 



for some distance beyond apex of basal declivity; thorax usually black, or 

 black -with a few reddish markings; front and middle legs varying from 

 pale yellowish to mostly reddish; hind tibia usually more or less reddish, or 

 whitish with distinct fuscous annuli 3 



2. Face densely clothed with rather coarse, whitish hairs; front femur with a 



conspicuous, preapical lamina beneath; hind femur with rather dense, long 



hairs on upper surface Erythroscambus (p. 76) 



Face with sparse, inconspicuous, yellowish hairs; front femur excised beneath 

 and without a preapical lamina; hind femur with only inconspicuous, short 

 hairs on upper surface Lissoscambus (p. 25) 



3. Front femur with a single, broad, distinctly coriaceous excision beneath; front 



tibia rather strongly angularly bent near middle, and rather strongly swollen 

 in apical 0.6; scape mostly, or entirely brownish or blackish beneath. 



Ateleophadnus (p. 27) 

 Front femur entire or with a single or double excision beneath, the excision 

 (except in S. nucum in which the excision is double) without distinct, cori- 

 aceous sculpture; front tibia moderately to very weakly, rather evenly 

 bent, and not strongly swollen in apical 0.6; scape variable, frequently 

 conspicuously whitish beneath 4 



4. Propodeum long, with distinct, long, rather narrowly separated, dorsomedial 



carinae; first tergite of abdomen slender (1.5 to 2.0 times as long as wide); 



scape rarely mostly whitish beneath Endroniopoda (p. 18) 



Propodeum usually rather short, with shorter, more widely separated, dorso- 

 medial carinae; first tergite of abdomen moderately stout (usually not more 

 than 1.5 times as long as wide) ; scape often whitish beneath. 



Scambus (p. 36) 



FEMALES 



1. Submetapleural carina usually absent; mesoscutum mostly bare or with only 



very sparse hairs, occasionally with moderately dense hairs; propodeum 

 without distinct dorsomedial carinae, sometimes with a shallow, median, 

 longitudinal sulcus; thorax red with a few conspicuous, black markings; 



hind tibia usually without distinct fuscous annuli 2 



Submetapleural carina present; mesoscutum with rather evenly distributed, 

 moderately dense hairs; thorax usually black or black with a few reddish 

 markings, or if largely red then the propodeum with distinct, dorsomedial 

 carinae; hind tibia usually with distinct fuscous annuli 3 



2. Ovipositor rather short and stout, and strongly compressed, with the basal- 



most ridges on apex of lower valve forming an angle of about 45° with its 

 longitudinal axis; sheath about 0.5 times as long as abdomen. 



Lissoscambus (p. 25) 

 Ovipositor long and slender, and only moderately compressed, with the basal- 

 most ridges on apex of lower valve forming an angle of about 30° with its 

 longitudinal axis; sheath at least 0.75 times as long as abdomen. 



Erythroscambus (p. 76) 



3. Ovipositor very strongly compressed, with ridges on apex of lower valve at 



right angles to its longitudinal axis and dorsally not developed into forward 

 directed teeth (fig. 310, c) jsubgenital plate with a rather small, median, 

 basal, membranous excision; apical segment of tarsi strongly swollen; claws 

 large and stout; propodeum long, with long, rather narrowly separated, 

 dorsomedial carinae Endromopoda (p. 18) 



