ICHNEUMON-FLIES — GELINAE I MESOSTENINI 143 



Manistee Co., Mecosta Co., Midland Co., Montmorency Co., Muske- 

 gon Co., Newaygo Co., Oceana Co., Osceola Co., Otsego Co., Presque 

 Isle Co., and Tuscola Co.); Minnesota (Itasca Park); New Jersey 

 (Moorestown) ; New York (Eastport, Ithaca, southeast slope of 

 McLean Bogs Reserve, and Six Mile Creek near Ithaca); North 

 Carolina (Crabtree Aleadows in Yancey Co. at 3,600 ft.); Ohio 

 (Cleveland, Hincldey, Puritas Springs in Cuyahoga Co., and Put- 

 in-Bay); Quebec (Aylmer, Joliette, La Trappe, and St. Esprit); 

 West Virginia (Lost River State Park in Hardy Co.); and Wisconsin. 



Dates of collections are from mid-spring to late summer, the 

 dates prior to June and later than August being as follows: May 7 

 in Alto Co., Mich.; May 8 and 16 in Mecosta Co., Mich.; May 20 

 in Lake Co., Mich.; May 26 in Osceola Co., Mich., and at Pmitas 

 Springs, Ohio; September 3 in Montmorency Co., Mich.; September 

 4 in Clare Co., Mich.; and September 16 in McLean Bogs Reserve, 

 Tompkins Co., N.Y. 



This species occm"s in the Alleghanian fauna, 



5. Ischnus inquisitorius (Miiller) 



Front wing of male 4.0 to 7.5 mm. long, of female 5.0 to 8.5 mm. 

 long; body moderately slender; clypeus narrow, in profile somewhat 

 pyramidal; tyloids on 3 or 4 segments, narrow, extending about 0.65 

 the length of the segments; mesoscutum mat, with fine punctures 

 that are separated by about 0.5 their diameter; scutellum with lateral 

 carinae on its basal 0.3 ± in male, on its basal 0.4± in female; punc- 

 tures on scutellum separated by about 0.7 their diameter in male, by 

 about 0.5 their diameter in female; metapleurum with small dense 

 punctures that are more or less confluent mth rather fine wi'inkling; 

 apical carina of propodeum completely absent on its median 0.35 ±, 

 sublaterally strong and sharp; postpetiole weakly mat or subpolished, 

 with small, rather weak punctures that are irregular and sparse in 

 male, very sparse in female, the portion of female postpetiole behind 

 the spiracle about 0.75 as long as wide; second tergite wealdy mat, 

 with rather fine, usually weak punctures that are separated by about 

 0.3 to 0.7 their diameter. 



This species is Holarctic. The coloration, size, and sculpture are 

 variable if the whole range is considered, but in a single region they 

 are moderately constant. We divide the available specimens into 

 six subspecies. These are defined rather arbitrarily and on relatively 

 variable characters. Also, there are broad zones of intergradation. 

 The proposed segregates, however, are useful in describing and 

 understanding the variations and their geographic distribution. 

 Below are keys to and descriptions of the forms that we consider 



