ICHNEUMON-FLIES — GELINAE : MESOSTENINI 365 



tarsi darker; hind tarsus dark brown, its middle thi-ee segments often 

 paler, rarely whitish; wings tinged with fuscous; abdomen ferruginous, 

 the basal 0.65 ± of its first segment and all or part of its last two tergites 

 blackish. 



The female is easy to recognize by its short thick flagellar segments, 

 flat temple, and thick hind tarsus. Recognition of the male is 

 dependent on the combination of characters used in the key. 



The species name is for Mrs. Kathryn Dreisbach, cocollector with 

 her husband of a wealth of ichneumonid specimens used in this and 

 other papers. 



Type: 6", Gladwin Co., Mich., July 25, 1957, R. and K. Dreisbach 

 (Dreisbach). 



Paratypes (62 cT, 399): From Connecticut (East Hartford, Green 

 Falls, Lyme, and New Haven); Maine (Casco, Old Town, and Sals- 

 bury Cove) ; Manitoba (Cedar Lake) ; Massachusetts (Blue Hills 

 Reservation, Forest Hills, Milton, Muskeget Island, Petersham, 

 Rutland, and Woods Hole); Michigan (Cheboj^gan Co., Clare Co., 

 Delta Co., Dickinson Co., Douglas Lake, Gladwin Co., Hiu-on Mts., 

 Isabella Co., Kalkaska Co., Midland Co., Montmorency Co., Muske- 

 gon Co., Ogemaw Co., Thumb Lake in Charlevoix Co., and Tuscola 

 Co.); Minnesota (Cass Co., Garrison, Grandy, Itasca Park, and 

 Plummer); New Hampshire (Durham, Jaffrey, and Mount Monad- 

 nock) ; New Jersey (Dividing Creek) ; New York (AUegany State 

 Park, Ithaca, Maple Crest in Catskill Mts., New Russia in Essex Co., 

 Six Mile Creek in Ithaca, and Westchester Co.) ; Ontario (Beamsville, 

 Harold, Ottawa, Strathroy, and Toronto) ; Pennsylvania (Delaware 

 Co., Pike Co., and Spring Brook); Quebec (Fulford, Gracefield, Hull, 

 Queen's Park in Aylmer, and St. Esprit); Saskatchewan (Prince 

 Albert National Park) ; Vermont (Ascutney, Grand Isle, and West 

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

 Wisconsin (Worden Township in Clark Co.). 



Most collection dates are from June 15 to August 19. Those out- 

 side of this range are : May 20 at Spring Brook, Pa. ; May 30 at Milton, 

 Mass.; June 5 at New Haven, Conn.; June 7 to 11 in Tuscola Co., 

 Mich.; June 10 at Mount Monadnock, N.H.; June 12 in Delaware Co., 

 Pa.; August 21 at St. Esprit, Que.; August 22 to 31 in Lost River 

 State Park, Hardy Co., W. Va.; August 26 at Aylmer, Que., and in 

 Dickinson Co., Mich.; and September 5 at East Hartford, Conn. 



There are two reared specimens: cT, reared from cocoon, Plummer, 

 Minn., collected Oct. 19, 1931, emerged January 1932, Donald 

 Denning. 9, reared from cocoon found under rock, Ithaca, N.Y., 

 collected Apr. 29, 1917, emerged May 10, R. C. Shannon. 



This species occurs in the Alleghanian fauna. 



