SYNOPSIS OF NORTH AMERICAN SYRPHID^. 127 



MYIOLEPTA.* 



Myolepta Newman, Ent. Mag., v, 373, 1838. 

 Xyloteja Rondani, Dipt. Ital. Prodr., ii, 96, 1857. 



Moderate sized, bare species, metallic, black, or black-green; on the 

 abdomen and face, sometimes with luteous side spots. Head broad, a 

 little flattened. Antennae sbort, situated npou an obtuse conical pro- 

 jection ; first two joints short, third rounded or oval, with a basal, bare 

 arista. Face strongly concave in outline below the anteunae, projecting 

 below, in the male with a tubercle near the middle. Eyes bare, contigu- 

 ous in the male ; the front somewhat narrowed behind in the female. 

 Thorax somewhat narrowed in front. Scutellum black, thinned near 

 its border. Abdomen about twice as long as the thorax, and as broad 

 or broader, somewhat flatteued, oval or ovate. Legs stout, all the fe- 

 mora somewhat thickened, but more especially so the hind pair. Mar- 

 ginal cell of the wiugs opeu ; third longitudinal vein nearly straight; an- 

 terior cross-vein towards the base of the discal cell. 



Type of genus, M. Inteola Gmelin. 



TABLE OF SPECIES. 



1. — Face on the sides below with a large lateous spot ; third joint of an- 

 tennas ovate strigilata 



Face without such spot 2 



2.— Legs wholly black bella 



Tarsi and tibiae more or less yellow 3 



3.— Abdomen black * • • nigra 



Abdomen with luteous or yellow spots at the base varipes 



Myiolepta strigilata. 



l[}jiole2)ta strigilata Loew, Centur., x, 54. 



Habitat. — Texas, North Carolina! 



^ ,9 . Blackish greenish, moderately shining, wholly clothed with 

 short, rigid, appressed white pile; antennae, tibice, base of front tarsi, 

 and hind tarsi except the last two joints, red ferruginous; third joint 

 of the antennoB ovate. Length of body, 6 to T-"-" ; of wings, 5 to 6"'™. 



Black-green, moderately shining, clotbed with short, rigid, appressed 

 white pile. Vertex of the male black, shining ; front and face clothed very 

 thickly, with dilutely lutescent pollen, a bare spot, however, above the 

 antennae; facial tubercle and cheeks black and shining, lower part of 

 the face on each side with a very large luteous spot. Front and face of 

 the female black and shining, the latter on the lower half on each side 

 with an oblique luteous spot ; these spots and a bisinuate fascia situated 

 below the antennae whitish or sublutescent pollinose ; the remainder of 

 the face not pollinose. Antennae ferruginous-red, near the base more 



Mvca, fly, and Mnra, fine. 



