395 

 SpogostyIvUM AI.BOFASCIATUM Macquart 



Anthrax albofasciatum Macquart, Dipt. Exot., Vol. 2, Pt. I, p. 67. (1841) 

 Argyramoeba obsoleta Loew, Berl. Ent. Zeitsehr., 1869, p. 29. 



Pit pa (PI. LVI, Fig. 3). — Length, 15-17 mm. Yellowish testa- 

 ceous, slightly shining. 



Differs from simson in having the pair of thorns on lower cen- 

 tral portion of face larger and more closely placed, the clypeus with 

 a sharp carina, the hairs on basal dorsal segment of abdomen flattened 

 and all others slender, those of first segment a little shorter than head 

 and thorax combined, and also in the shape of the apical segment, 

 which at its tip is divided into tw^o rather stout processes, each of 

 which has a short projection on its inner surface near apex, and at 

 the base on each side of segment 2 short thorns, as shown in Figure 

 4, Plate LVI. 



I have seen pupae of this species sent me by Mr. Phil Rau, and a 

 pupa and partly transformed larva submitted by Dr. Edna Mosher. 

 I do not know the locality of the former, but the latter are from New 

 York State. 



Imagines of the species are commonly found throughout Illinois, 

 and probably wherever its host, Pclopocus cenientarius, is found. 



I suspect that several more species names will ultimately be added 

 to the foregoing synonymy, as several species depend upon wing- 

 markings — which are extremely variable — for their separation. 



References to Descriptions of Larvae and Pupae 

 OP North American Bombyliidae 



Spogostylum anale Sav, Malloeh. Bull. III. State Lab. Nat. Hist., Vol. 11, 



Art.X p. 328. (1915) 

 Spogostylum anale Sav, Shelford, Ann. Ent. Soe. Amer., Vol. 6, No. 2, 



1913, p. 213. 

 Clirysantlirax fnlvoJiirta Wiedemann, Malloeh, Proc. Biol. Soe. Wash- 

 ington, Vol. 29, p. 67. (1916) 

 Aplioehantus mus Osten Saeken, Riley, Packard, and Thomas, Sec. Rep. 



U. S. Ent. Comm., p. 262. (1880) 

 SystoecJins oreas Osten Saeken, idem, ibid., p. 266. 

 Exoprosopa fasciata Macquart, Malloeh, Bull. 111. State Lab. Nat. Hist., 



Vol. 11, Art. 4, p. 329. (1915) 

 Exoprosopa fascipenyiis Say, Malloeh, ibid., p. 330. 

 Argyramoeba oedipus Fabrieius, Townsend, Am. Nat., Vol. 27, p. 60. 



(1893) 

 Sparnopolius fulvus Wiedemann, Malloeh, Bull. 111. State Lab. Nat. 



Hist., Vol. 11, Art. 4, p. 331. (1915) 



