ICHNEUMON-FLIES — GELINAE : MESOSTENINI 465 



kiyou Pass in Jackson Co. at 4,500 ft.); Pennsylvania (Speeceville) ; 

 Quebec (Aylmer); South Carolina (Columbia, Greenville, and Mc- 

 Clellanville) ; Tennessee (Smoky ISIts.) ; Texas (KerrviUe, San An- 

 tonio, and Victoria) ; Utah (Farmington) ; Vermont (Laurel Lake near 

 Jacksonville) ; Virginia (Dunn Loring, Falls Chiu"ch, Galax, Glen- 

 carlyn, and Mount Vernon); West Virginia (Cheat Mt. at 2,000 ft. 

 in Randolph Co., Cheat River, and Lost River State Park in Hardy 

 Co.) ; and Wisconsin (Door Co. and Sawyer Co.). 



Collection dates are rather evenly distributed from mid-spring to 

 mid-fall. Early and late dates of interest are: March 5 at San Jose, 

 Calif.; March 11 at Vicksburg, Miss.; April 16 at Takoma Park, Md.; 

 May 9 at Raleigh, N.C., and at Boulder, Colo.; May 18, 20, and 24 

 at Ithaca, N.Y.; September 16 in Montcalm Co., Mich.; October 22 

 at Plummers Island, Md.; and October 31 at Southern Pines, N.C. 



Reared specimens are as follows: 2cf , from cells of Auplopus nest, 

 Plummers Island, Md., 1910, E. A. Schwarz. cT, from cell of Auplo- 

 pus nest, without data, cf , from cell of mud nest that appears to be 

 that of Phanagenia bombycina, Columbia, Mo. 



This species ranges throughout the United States and southern 

 Canada. 



2. Messatoporus discoidalis (Cresson) 



Figure 338, c 



Mesosterius ferrum-equinum Walsh and PJley, 1869, Amer. Ent., vol. 1, p. 133. 



Name preoccupied by BruUe, 1846. Type: Illinois? (lost). 

 IMesostenus discoidalis Cresson, 1872, Trans. Amer. Ent. See, vol. 4, p. 162; 



9. Type: 9, Bosque Co., Tex. (Washington). 

 Mesostenus jocosus Provancher, 1874, Naturaliste Canadien, vol. 6, p. 300; 9 • 



Type: 9, Quebec (Quebec). 



Front wing of male 5.4 to 8.4 mm. long, of female 5.6 to 8.5 mm. 

 long; flagellum, clj^eus, mesoscutum, and general structure similar 

 to that of rujiventris except that mesopleurum and metapleurum are 

 usually distinctly mat, oblique groove setting off upper hind part of 

 mesopleurum usually has some fhie, weak, transverse wrinldes, and 

 that thyridium of second tergite averages a little wider (about 0.5 as 

 wide as long) . 



Male: Colored like female except that front and middle legs are 

 more whitish, mfuscation on upper side of hind coxa averages larger, 

 hind second trochanter is fuscous, and infuscation on hind tibia is 

 stronger and more extensive. 



Female : Head, body, and hind coxa marked with black and white as 

 in figure 338, c; palpi white; antenna black, the scape except above 

 and broad band on flagellum white; mesoscutum with a median white 

 spot, from which there usually extends forward on each side a narrow 

 white stripe along outer edge of median lobe of mesoscutum; front 



