SYNOPSIS OF NORTH AMERICAN SYRPHID^. 245 



Spilomyia longicornis. 



Spilomyia longicornis Loew, Centur., x, 49. 



Habitat. — Illiuois, Peunsylvania, District of Columbia, New England !, 

 Texas, Kansas (O. S.) 



5,9. Length, 11 to 13™'". Eyes of male contiguous, vertical triangle 

 on the upper half black, below yellow; frontal triangle yellow, with a 

 large triangular black spot above the auteunse. Front in female yellow 

 on the sides, with a black stripe broad below, attenuated above, vertex 

 black. Antennae brownish black, sometimes partly, never wholly, brown- 

 ish red, first two joints somewhat elongate, arista luteous. Face yellow, 

 with a median stripe attenuate above, and a narrow stripe from the 

 eyes to the oral margin, on the cheeks, black. Thorax black, humeri, 

 and a rounded spot to the inner side, a /^-shaped spot in front of the 

 scutellum, and a vittula running from each post-alar callosity to near 

 the suture, and then bent inwards, yellow, sometimes also a small yellow 

 spot above the suture in front of the root of the wings. Pleurae with 

 five yellow spots beside the humeral and sub-alar ones; an elongate one 

 on the meso-pleurce and one below on the sterno-pleurse, one just above 

 the anterior coxfe, one on the pteropleurse, and a broader one behind, 

 below the tegulae, the three latter nearly coalescent. Margin of scutel- 

 lum yellow. Abdomen black opaque, second, third, and fourth seg- 

 ments each with two narrow yellow bands connected by the yellow 

 lateral margins; first band dilated on the sides, the third and fifth 

 usually very narrowly interrupted. Hypopygium yellow ; in the female 

 the fifth segment black, with a narrow yellow border. Legs yellow; 

 front tibiae except the base, and the front tarsi, black; hind femora 

 sometimes darker towards the end ; apex of hind tibiae and the tarsi 

 ochraceous. Wings sub-hyaline, in front brownish ; last section of sixth 

 vein nearly as long as the posterior basal cross-vein. 



Spilomyia liturata, u. sp. 

 Habitat. — New Mexico ! 



$ . Length, 14" '". Antennae brownish red, elongate ; first joint as long 

 as the third, second joint a half longer than the first. Face bright yel- 

 low, with a slender black stripe, not reaching quite to the antennae ; 

 front like the face, in the middle with a black stripe, broader below, 

 very narrow just below the black vertex. Dorsum of thorax nearly 

 opaque black, with bright yellow markings, as follows : a spot on the 

 hnnieri, and one of nearly the same size on the inner side of each, post- 

 ;jlar callosities, extending as a slender vittula forwards, the anterior 

 end of which is curved inwards, a spot on each side of the scutellum, a 

 jarge oval spot on the meso-pleuraB, a smaller rounded one below on the 

 sterno-pleurae, one of about the same size on the sides of the metanotum, 

 and a smaller one above the front coxae. Abdomen nearly opaque black, 

 with two yellow cross-bands on the second, third, and fourth segments; 

 the first cross-baud of each segment is rather broad, strongly dilated on 



