ICHNEUMON-FLIES — GELINAE : MESOSTENINI 67 



9. Agrothereutes mandator (Linnaeus) 



Figure 327,h 



Front wing 4.3 to 6.6 mm. long; clypeus of moderate size, almost 

 flat, its apex impressed and with a faint median apical lobe that has 

 a weak median emargination; face wide, rather flat, mat, medially 

 and submedially with moderate-sized punctm'es that are separated by 

 about 0.5 their diameter; third flagellar segment of female about 5.3 

 as long as wide; mesopleurum subpolished, with moderate-sized 

 punctm-es that are separated by about 0.8 their diameter and with 

 fine, irregularly longitudinal wrinlding on most of its surface that 

 partially obscures the punctures; mesoscutum polished, with mod- 

 erate-sized, rather strong punctures that are separated by about 0.4 

 their diameter; intercubiti weakly convergent anteriorly, the areolet 

 subcj[uadrate; second tergite mat, with evenly distributed, small 

 setiferous punctures that are separated by about 0.6 the length of the 

 hairs in male, by about 1.0 the length of the hairs in female; ovipositor 

 tip as in figure 327,h. 



This species is a gregarious parasite in the cocoons of Clavellariidae. 

 There are European and American subspecies, as keyed and described 

 below : 



1. Mesopleural sculpture a little weaker; hind coxa of male black; middle coxa of 

 female fuscoferruginous or blackish; range: Europe. 



9a. mandator mandator (Linnaeus) 

 Mesopleural sculpture a little stronger; hind coxa of male and middle coxa of 

 female ferruginous; range: North America. 



9b. mandator americanus, new subspecies 



9a. Agrothereutes mandator mandator (Linnaeus) 



Ichneumon viandator Linnaeus, 1758, Systema naturae, ed. 10, vol. 1, p. 565. 

 Types: 2cf , without data (Linnaean Society in London). 



Mesopleural punctm-es and wrinlding relatively weak. 



The male dift'ers in color from the subspecies americanus in aver- 

 aging less white on thorax, more fuscous on front and middle coxae, 

 and on hind basitarsus, and in having hind coxa black and hind tro- 

 chanters largely fuscous. 



The female differs in color from the subspecies americanus in having 

 the clypeus and thorax entirely black except for sometimes a light 

 brown mark on subtegular ridge, front and middle coxae infuscate, 

 trochanters more or less fuscous, and hind tarsus brown, the second 

 through fourth segments often pale brown. 



We have not seen the type of this subspecies but have relied on 

 specimens determined by Roman, who has himself studied the type 

 and published his findings (1932, Ent. Tidskr., vol. 53, p. 8). 



Specimens: ScT, 39, from Sweden and Germany, 



