ICHNEUMON-FLIES — GELINAE : MESOSTENINI 467 



Reared specimens are as follows: ScT, from nest of Auplopus 

 mellipes mellipes, Vienna, Va., April 26, 1942, J. C. Bridwell. 9, from 

 nest of Auplopus mellipes mellipes, without further data. 9, reared 

 from mud cells with Ceropales maculata Jraterna [doubtless cells of 

 Auplopus or Phanagenia], Rockford, 111., Dec. 17, 1920, O. H. S. 

 cf , reared from Phanagenia bombycina, Apr. 24, 1884, T. Pergande. 

 9, reared from mud nest that appears to belong to Phanagenia bomby- 

 cina, Columbia, Mo. 9, reared from "mud wasp," Victoria, Tex., 

 Mar. 23, 1909, J. D. Mitchell. 



This species occurs in the Carolinian and Austroriparian faunas. 

 It is adult from early summer to mid-faU. 



3. Messatoporus conipressicornis Cushman 



Figure 338,d 



Messatoporus compressicornis Cushman, 1929, Proc. U.S. Nat. Mus., vol. 74, 

 art. 16, p. 12; d", ?. Type: 9, Inglenook, Pa. (Washington). 



Messatoporus major Cushman, 1929, Proc. U.S. Nat. Mus., vol. 74, art. 16, p. 13; 

 ?. Type: ?, Orlando, Fla. (Washington). 



Front wing 5.4 to 7.8 mm. long in male, 6.6 to 9.7 mm. long in 

 female; apical half of clj^eus quite flat, contrasting in shape with the 

 convex basal half; apical part of flagellum rather strongly compressed, 

 the last 8± segments about twice as deep as wdde ; mesoscutum sparsely 

 hairy, its hind half ahnost hairless; mesopleurum and metapleurum 

 polished, not at all wrinkled, with fine, weak punctures that are 

 separated by about 4.0 their diameter; thyridium of second tergite 

 about 0.7 as wide as long. 



Head, body, and hind coxa marked with black and white as in 

 figure 338, d; palpi white; antenna black, with a broad white band on 

 flagellum, the lower half of male scape white; mesoscutum with a sub- 

 circular median white spot; front and middle coxae of male white, the 

 middle coxa and sometimes the front coxa with a dorsal black stripe; 

 front and middle coxae of female white, with irregular dorsal and 

 ventroposterior black stripes; trochanters white, or in female more or 

 less tinged with fulvous, usually blackish basally, the second hind 

 trochanter of male mostly fuscous, of female mostly fuscof erruginous ; 

 front and middle legs beyond trochanters pale fulvous, the last seg- 

 ment of the tarsi fuscous and fii'st through fourth segments of male 

 middle tarsus brownish, the third segment paler; hind femur fulvous, in 

 male its base and apex somewhat infuscate; hind tibia pale fulvous, 

 its apical 0.33 in male and apical 0.1 in female fuscous; hind tarsus 

 white, the basal 0.35 ± of fii'st segment black. 



This may prove to be a subspecies of the Mexican Messatoporus 

 arcuatus (Cresson), 1873. It appears to differ only in minor color 

 characters. 



