AKT. 2 A EEVISION OF THE GENUS PROCECIDOCHARES ALDRICH 7 



PROCECroOCHARES ATRA Loew 2 



Trypeta atra Loew, Centuries, pt. 2, No. 74, 1862. 



Oedaspis atra Loew, Men. N. A. Dipt., vol. 3, 1873, p. 257. pi. 11, fig. 17. — 



Patton, Canad. Ent. vol. 29, 1897, p. 247. — Johnson, List. Ins. N. J., 



1899, p. 687.— Van der Wulp, Biologia, Dipt., vol. 2, 1899, p. 408, pi. 



11, fig. 29.— Snow, Kans. Univ. Quart., vol. 2, 1903, p. 219.— Washburn, 



Dipt, of Minn., 1905, p. 118. — Johnson, List. Ins. N. J., ed. 2, 1909, p. 



801. — Stebbins, Ins. Galls Springfield, Mass., 1910, p. 52. — Hendel, 



Abhandl. . . . Mus. Dresden, vol. 14, 1914, pp. 40, 42. — Sturtevant, 



Journ. N. Y. Ent. Soc, vol. 26, 1918, p. 36.— Britton, Checklist Ins. 



Connecticut, 1920, p. 204. — Cole and Lovett, List. Dipt. Oregon, 1921, 



p. 325. 

 Oedaspis polita Osten Sacken, Trans. Amer. Ent. Soc, vol. 2, 1869, p. 301. 



Mon. N. A. Dipt., vol. 3, 1873, p. 256, footnote. — ^Johnson, List. Ins. 



N. J., 1899, p. 687. — BeutenmIIller, Ins. Galls in Vicinity of New 



York, 1904, p. 33, fig.— Jarvis, Rept. Ent. Soc. Ont. for 1908 (1909), p. 



81. — Johnson, List. Ins. N. J., ed. 2, 1909, p. 801. — Girault, Ent. 



News, vol. 24, 1913, p. 340. — Stebbins, Ins. Galls Springfield, Mass. 



1910, p. 52. 

 Oedaspis setigera Coquillett, Journ. N. Y. Ent. Soc. vol. 7, 1899, p. 262. — 



Washburn, Suppl. List Dipt, of Minn., 1906, p. 82. — Johnson, List 



Diptera of Florida, 1913, p. 83. 

 Procecidochares atra Phillips, Journ. N. Y. Ent. Soc, vol. 31, 1923, p. 138, 



fig. 31.— Johnson, List Dipt. New Eng., 1925, p. 262. — West, List Ins. 



N. Y. State, 1928, p. 852. 

 Procecidochares setigera Phillips, Journ. N. Y. Ent. Soc, vol. 31, 1923, pp. 



137, 138.— Johnson, List Dipt. New Eng., 1925, p. 262. 



Male. — Shining black in ground color, including femora; the anten- 

 nae, palpi, tibiae, tarsi, and most of the head yellow. Front much 

 narrower than in Callachna, measuring at anterior ocellus 0.46 head 

 width, narrowing considerably at the attachment of the antennae. 

 Two pairs of vertical bristles, a large pair of proclinate and slightly 

 divergent ocellars standing rather far apart, one reclinate upper 

 orbital and two or three convergent lower ones, back of head with 

 a row of stout pale hairs, beginning about the middle of the eye, 

 slightly interrupted across the occiput; front with a few small pale 

 hairs close to the eye and a few very small ones mixed with darker 

 above the mouth and just inside the suture. Upper part of head 

 blackish behind and on vertex, the front mostly yellow; lunule pale 

 yellow, of good size when not abnormally retracted. Third antennal 

 joint about twice the second, arista black, enlarged at the extreme 

 base; palpi decidedly flattened and rather elongate. Cheek about 

 one-fifth of eye height, dark immediately below the eye; back of head 

 with rather short pale hair below. 



» As mentioned under polita, I have assumed that references to that species which appear to be based 

 on rearings from Solidago galls really refer to atra. It seems probable that misidentifications have 

 arisen from Ostea Saclven's mistake. Felt, in his Key to Galls, (p. 198), and in 34th New York Report, 

 for 1922, (p. 76), reports atra reared from galls on Chrysothamnus at Manti, Utah, but the species was 

 really minuta. 



