ICHNEUMON-FLIES, PART 2 : EPHIALTINAE 245 



and Murray), Vermont (Laurel Lake near Jacksonville and Wood- 

 stock); Virginia (Falls Church and Vienna); Washington (Mount 

 Rainier at 2,900 ft., Okanogan, and Westport); and Wisconsin 

 (Madison). 



Dates of capture are from mid-spring to mid-fall. The majority 

 are collected in the summer months. One of the specimens was taken 

 at light. 



Reared specimens are as follows: c\ parasitic on Steatoda borealis 

 (host with large parasite larva found May 3, 1942; larva about 9.5 mm. 

 long May 5; larva had killed and discarded host May 9; larva still 

 spinning cocoon May 11; pupated May 18: emerged as adult May 26, 

 1942), Fish Canyon, San Gabriel Mts., Calif., May 26, 1942, E. I. 

 Schlinger. d\ emerged from cocoon with freshly formed pupa found 

 near dead Steatoda borealis (cocoon found Apr. 27, 1949; adult emerged 

 Apr. 30, 1949), Fish Canyon, San Gabriel Mts., Calif., E. I. Schlinger. 

 9, emerged from cocoon found near dead Steatoda borealis (cocoon 

 found Apr. 27, 1949; adult emerged May 8, 1949), E. I. Schlinger. 

 9, reared from spider, Falls Church, Va., May 13, 1956, O. L. Cart- 

 wright. 



This American subspecies is transcontinental in the Transition and 

 Upper Austral zones. Its habitat seems to be moderately dry, open 

 deciduous woods or shrubs. Adults occur throughout the growing 

 season. It has been reared from Steatoda borealis. 



8. Genus Polysphincta 



Figure 296,a 



Polysphincta Gravenhorst, 1829, Ichneumonologia europaea, vol. 3, p. 112. Type: 

 Polysphincta tuberosa Gravenhorst; designated by Westwood, 1839. 



Front wing 3.7 to 7.0 mm. long; eye bare; clypeus broadly len- 

 ticular, its apical margin truncate medially, moderately convex 

 transversely, its basal half moderately convex longitudinally, its 

 apical half almost flat with the apical margin a little reflexed; epomia 

 strong; mesoscutum subpolished or polished, densely hairy to sparsely 

 hairy or bare; notaulus long, moderately strong; prepectal carina 

 complete, its upper end far from front margin of mesopleurum; pleural 

 carina of propodeum present or absent; legs moderately slender; 

 areolet absent; intercubitus about 0.3 to 0.4 as long as second abscissa 

 of cubitus; nervulus interstitial or briefly postfurcal; discoidella 

 present, rather strong; first tergite short; second to fourth tergites 

 weakly mat or polished, then punctures fine, weak, and sparse or very 

 sparse, each tergite with a median pan of tuberclelike swellings; hairs 

 on second through fourth tergites sparse to moderately dense; ovi- 

 positor sheath about 4 times as long as apical depth of abdomen; 



