ICHNEUMON-FLIES OF AMERICA: 1. METOPIINAE 



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wide in female; punctures of second abdominal tergite of moderate 

 size and strength, sublaterally separated by about 1.3 their diameter, 

 medially absent or very sparse. 



Head ivory white, a pair of small spots medially on lower part of 

 frons and a spot enclosing ocelli and upper half of occiput fulvous to 

 blackish brown, the occipital mark connecting laterally with hind 

 margin of eye and medialty with spot enclosing ocelli; mouth parts 

 white; antenna blackish brown, brown below, the underside of scape 

 white; thorax fulvous, the upper part of pronotum (broad behind and 

 tapering forward to epomia), most of propleurum in male, tegula, 

 subtegular ridge, apex and sides of scutellum, postscutellum, meso- 

 sternum more or less and more or less of prepectus, ivory white; 

 front and middle legs whitish, partly tinged with fulvous; hind coxa 

 fulvous; hind trochanters pale fulvous; hind femur fulvous, its apex 

 white; hind tibia white, its basal 0.20 ± and apical 0.30 ± blackish; 

 hind tarsus white, its last segment fuscous except at base; abdomen 

 fulvous or sometimes partly or entirely infuscate. Rarely the upper 

 part of propodeum and areas on thorax surrounding wing bases are 

 infuscate. 



Figure 137, 138 — Localities: 137 (left), Exochus ferrugineus; 138 (right), 

 E. mesorufus. 



This is a distinctive species in its fulvous ground color, enlarged 

 ocelli, frons largely white, weak median swelling on frons, and weak 

 median carinae on propodeum. It is approached, however, or almost 

 matched in all of these characters by the closely related Exochus 

 virgatifrons . E. ferrugineus shows an interesting reversal of the usual 

 sexual differences in having the female ocelli larger than those of the 

 male and the female hind femur more slender than that of the male. 



Specimens: d" , 2 miles west of Archer, Fla., Mar. 25, 1953, H. F. 



451582—59 16 



