ART. 2 A EEVISION" OF THE GENUS PROCECIDOCHARES ALDRICH 3 



PROCECIDOCHARES PENELOPE Osten Sacken 



Trypeta (Oedaspis) penelope Osten Sacken, Western Diptera, 1877, p. 346. 

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



137, fig. 29.— Johnson, List Dipt. New Eng., 1925, p. 262.— West, 



List Ins. New York, 1928, p. 852. 



Osten Sacken described the species from a male and female taken 

 at Manlius, N. Y., which he attributes to J. H. Comstock. Mrs. 

 Phillips figured the wing and partially described the species from a 

 single specimen now in the Cornell collection, which is evidently one 

 of the type lot, as it is labeled Manlius, N. Y., and the records of 

 the collection show that it was collected by H. H. Smith and was in 

 Osten Sacken's possession back in the seventies. At least one type 

 is in the Museum of Comparative Zoology, and Mr. Banks gave me 

 some notes on it. Johnson recorded the species from Chester and 

 Westfield, Mass. West mentioned the original locality. 



The only specimen I have seen is a male received for examination 

 from Professor Melander, who collected it at Cold Springs Harbor, 

 Long Island, in August. The species is unmistakable, all the bristles 

 being reddish-yellow and the head, pleurae, legs, and abdomen 

 yellow. 



PROCECIDOCHARES POLITA Loew 



Trypeta polita Loew, Men. N. A. Dipt., vol. 1, 1862, p. 77, pi. 2, fig. 12. 



Trypeta (Oedaspis) polita Loew, Mon. N. A. Dipt., vol. 3, 1873, p. 257, pi. 

 10, fig. 12. 



Oedaspis polita Johnson, Cat. Ins. N. J., 1899 and 1909; Dipt. Florida, 

 1913, p. 83; List Dipt. New Engl., 1925, p. 262.— Britton, Check-list 

 Dipt. Conn., 1920, p. 204.— Phillips, Journ. N. Y. Ent. Soc, vol. 31, 

 1923, p. 137, fig. 28.— West, List Ins. New York, 1928, p. 852. 



The type specimens, now in the Museum of Comparative Zoology, 

 were from Mississippi and Washington, D. C; other records in the 

 works cited above are New Jersey, Florida, Connecticut, New York, 

 Pennsylvania, Kansas, Georgia, Massachusetts, and Rhode Island. 

 Unfortunately the species has been much misidentified, and I do not 

 know from the literature which records are correct. The confusion 

 began with Osten Sacken, who recorded the species as reared from 

 galls on goldenrod. Mr. Banks writes me that all of the Osten 

 Sacken reared material in the Museum of Comparative Zoology is 

 atra, and there can be no doubt that Osten Sacken made the mistake 

 of writing polita when he should have written atra. I have therefore 

 transferred to atra all the records which appear to have been based 

 wholly or in part on rearings. The two species are widely different, 

 atra having black femora and polita yellow ones, etc. 



Aside from the types, which I have not seen, the only specimens 

 which I am certain belong to polita, (although presumably many others 

 do in the literature) are two males and two females collected by Banks 

 at Falls Church, Va, He very kindly donated one of each sex to the 



