A BEET-LEAF MINER — I'EGOMYI.V VICINA. 209 



This species has also been reared by Professor Conistock, at Ithaca, 

 in a single example, which emerged from pupa after twenty days' 

 pupation. 



Pegomyia vicina n. sp. 



Of the examples of this form, Mr. Meade writes : " They are males 

 of a species very similar to Fallen's Musca ( Choriophila) conformis. Fal- 

 len, however, as well as Zetterstedt, only knew the female, which has 

 the femora all yellow as well as the basal joints of antennae, etc., as in 

 your specimens. I have, however, this last summer, obtained both 

 males and females of conformis, bred from the Reaves of Arctium lap])a 

 [burdock] which they mine, and the males have the antennae quite 

 black, and also the anterior femora, so that they differ in these respects 

 from your species." 



From its close resemblance to conformis, this species may be desig- 

 nated as vicina. Three examples of it — all males — were among the 

 specimens obtained by me from the mined beet-leaves. The following 

 is briefly its description : — 



Head ■witli a few black bristles, front ■wbitish, with the frontal stripe pale red- 

 dish-brown : antennae black, first joint yellow ; arista with very short hairs under 

 a strong magnifier; palpi yellow, black at tip. Thorax cinereous, inclining to 

 yellow, bristly, faintly lined, with a broad mesial and narrower lateral brownish 

 stripes, and spotted laterally with brown. Abdomen subcyliudrical, color of the 

 thorax, with a mesial blackish spot on the anterior half of each segment; hairs 

 black, arranged in five transverse rows, of which those of the hinder row are 

 long; five segments seen from above, the appendages recurved beneath. Poise rs 

 yellow. Legs moderately hairy, the femora and tibiae yellowish, the tarsi black, 

 middle femora more hairy beneath, with four long bristles near their base; the, 

 ])OSterior femora and tibiae with numerous stout black bristles. Wings slightly 

 tinged with brown, quite iridescent, the two longitudinal veins 3 and 4 parallel 

 toward the margin, and diverging at it, and the hinder transverse vein (9) quite 

 angulated. Fig. 62, represents the venation of the species 



Expanse of wings, 0.48 inch. 



Described from two males disclosed from pupae, August 7th. 



Fio. 62. — Wing of a beet-leaf miner, PEOOMyi.\ vicina, enlarged 15 diameters. 



27 



