518 U. S. NATIONAL MUSEUM BULLETIN 216 



Reared specimens are: 2 c?, from Astylopsis macula in Castanea 

 dentata, Notch, Pa., June 26, 1913, F. C. Craighead. 9, from Asty- 

 lopsis macula in Castanea dentata, Rockville, Pa., June 2, 1913, F. C. 

 Craighead. 29, from Juniperus, Tryon, N. C, W. F. Fiske. 39, 

 from Castanea dentata, Tryon, N. C, W. F. Fiske. 7d\ 109, from 

 Acer negundo, Indian Head, Sask., May 5 to Sept. 4, 1940, C. R. 

 Douglas. 



This species is in the Alleghanian and Carolinian faunas. It 

 parasitizes borers in hardwoods, and there is a rearing horn. Juniperus 

 on record. Adults occur from early spring to mid-fall. 



14. Xorides (Xorides) albopictus (Cresson) 



Figures 313,h; 315,c; 316,f; 328,n; 331,h 



Xylonomus albopictus Cresson, 1870, Trans. Amer. Ent. Soc, vol. 3, p. 168; 9 . 



Type: ? , New York (Philadelphia). 

 Xorides canadensis Provancher, 1875, Naturaliste Canadien, vol. 7, p. 248; o*. 



Type: d\ Mount Yamaska, Que. (lost). 

 Xylonomus (Moerophora) duplicatus Rohwer, 1913, Proc. U. S. Nat. Mus., vol. 



45, p. 356; cf. Type: cf, Clark Station (near St. Louis), Mo. (Washington). 

 Biology: Kaston, 1937, Bull. Connecticut Agr. Exp. Sta., no. 396, p. 356. — 



Procter, 1938, Biological survey of the Mount Desert region, vol. 6, p. 407. 



Front wing 3.0 to 9.5 mm. long in male, 5.8 to 10.5 mm. long in 

 female; occipital carina narrowly (but definitely) interrupted medially 

 above; sculpture of temple and of second tergite as in X. calidus 

 except that the temple is more sparsely punctate; first tergite of 

 male about 2.7 as long as wide, of female about 2.5 as long as wide. 



Black, the thorax often with ferruginous tinges, especially on 

 lateral lobes of mesoscutum. Face of male except for median longi- 

 tudinal brown stripe, in female spot below antennal socket, front 

 orbit (constricted or interrupted opposite antennal socket), hind 

 orbit (widened above), clypeus, labrum, front of scape of male, band 

 on female flagellum covering about 4.5 segments, stripe on upper 

 margin of pronotum (extending from epomia to near hind corner), 

 short stripe on lower margin of pronotum, subtegular ridge, mese- 

 pimeron, most of scutellum, posterior 0.3 ± of propodeum, and 

 apicolateral subtriangular spots on abdominal tergites, white; center 

 of clypeus and palpi stramineous, the last segment of palpi darker; 

 mandible ferruginous, blackish apically; tegula brownish fulvous, 

 white basally and apically; front and middle legs fulvous, the outer 

 side of coxa, most of trochanters, apex of femora, and basal 0.15 

 of tibiae white, the fifth segment of their tarsi fuscous; hind coxa 

 blackish, its apical margin white; hind trochanters brown and white 

 (mostly white in male, mostly brown in female); hind femur brown; 

 hind tibia dark brown, its basal 0.15 white and in the female pale 



