ART. 17. NORTH AMERICAN PHOROCERA — ALDRICH AND WEBBER. 87 



Fourth segment wholly deep yellow pollinose in striking contract to 

 the remainder. Genitalia rather large, outer forceps hare, gently 

 curved, as long as the inner which seem united and are slender. 

 Fifth sternite deeply notched hut plain in structure. Legs varying 

 from hlack to reddish; mid tibia with one bristle on outer front 

 side, hind tibia ciliated with one larger at middle. Male pulvilli 

 short. Wings subhyaline; fourth vein with a slightly rounded, 

 oblique bend and no fold, ending not far before the tip of wing. 

 Third vein with two or three setules at base. 



Length 5.5 to 8 mm. 



Described from two males and seven females, all reared from 

 CossiiJa magnifica Strecker at Greenville, South Carolina, by Garl 

 Heinrich; emerged from June 2 to July 12, 191B. 



ry^e.— Female Cat. No. 25731, U.S.N.M. 



Genus MADREMYIA Townsend. 



Madretnyia Townsend, Proc. U. S. Nat. Mus., vol. 49, 1916, p. 622. Type 

 and sole species, Madremyia parva Townsend (equals Phorocera saun- 

 dersii Williston). 



MADREMYIA SAUNDERSIl Williston. 



Phorocera saundersii Williston, in Scudder's Butterflies of New Eng- 

 land, vol. 3, 1889, p. 1922.— CoQUiLLETT, Revis. Tachin., 1897. p. 104.— 

 Baker, Invertebrata Pacifica, pt. 1, 1904, p. 38. — Howaud and Fiske, 

 Bull. 91, U. S. Bur. Ent., 1911, p. 145.— Hyslop, Bull. 95, pt. 5, U. S. 

 Bur. Ent., 1912, p. 117, fig.— Tothill, Canad. Ent., vol. 45, 1913, p. 

 73. — Winn and Beaulieu, List of Dipt, of the Prov. of Quebec, 1915, 

 p. 142 (Suppl. to 7th Kept. Que. Soc. for Protection of Plants).— 

 LovETT, Sec. Bien. Crop Pest Kept. Oregon Exp. Station, 1915, p. 

 145.— EssiG, In.i. and Benef. Ins. of Cal., ed. 2, 1915. pp. 329, 401, tif,'.— 

 Cole and Lovett, List of Diptera of Oregon, 1921, p. 302.— Gkeene, 

 Proc. U. S. Nat. Mus., vol. 60, art. 10, 1922. p. 11, fig. (puparium). 



Madremyia parva Townsend, Proc. U. S. Nat. Mus., vol. 49, 1916, p. 622. 



The species can be recognized by the addition of a few characters. 

 Front broad (.37 of the head width in the male, .39 and .40 in 

 the two females) ; the parafrontals shining on upper half and bear- 

 ing between the usual frontals and the eye (mesad of the orbit a Is 

 in the female) a row of from three to six recurved smallish bristles; 

 palpi black; four postsutural dorsocentrals ; three sternopleurals; 

 one pteropleural, as large as the largest sternopleural ; scutellum 

 with three lateral pairs, the apicals suberect ; abdomen with discals ; 

 middle tibia with three or four long bristles on the front side; third 

 vein with three hairs near base; first posterior cell closed in the 

 margin or with a very short petiole. 



Length 4.5 to 6.5 mm. 



Besides the two Townsend types of farva (Cat. No. 20032), which 

 are from the Sierra Madre Mountains of Chihuahua, Mexico, alti- 

 tude 7,300 feet, and Sierra Blanco Mountains of New Mexico, alti- 



