Eleventh Eeport op the State Entomologist 169 



in fig. 2, and at y,y, two of the more prominent tubercles are shown in 

 outUne. Labial palpi 4-segmented ; basal short ; second and third 

 nearly equal, about twice the length of the first ; the fourth as long as the 

 intermediate two. Labium yellowish, bearing a few stout set^e, and 

 rounded anteriorly. 



Thorax: dorsum black, villous; pleura brownish; scutellum domed. 

 Pedicel of halter slender ; distal portion subelliptical in outline, villous, 

 yellowish. Wings large, densely villous and with a yellowish cast ; sec- 

 ond longitudinal vein (radius) joining costa beyond the apex of the wing; 

 margin of the wing densely cihate and slightly sinuate at the tip of the 

 first branch of the third longitudinal vein. Coxae large, rhomboidal; 

 hind pair extending to the third abdominal segment ; trochanter subglo- 

 bose; femora stout, slightly gibbous distally, hind pair extending beyond 

 the tip of the abdomen in the male ; tibiae rather stout, one-fifth shorter 

 than femora gibbous apically ; tarsi slender, first segment very short; sec- 

 ond nearly equal to tibia; third, one-half second; fourth, two-thirds of 

 second; and last one-half of fourth, and bearing a pair of stout, recurved 

 -claws and a well-developed empodium (fig. 4). 



Abdomen of male brownish-black, with numerous long setae; the fifth 

 and sixth segments are the largest, from which it tapers slightly to the 

 ■eighth ; the following segment bears the appendages ; the side pieces are 

 large and rounded laterally and posteriorly, from their latero-posterior 

 portions the claspers arise from a broad base and taper rapidly to a 

 rounded apex. 



Abdomen of female villous, tapering posteriorly; seven distinct 

 segments visible besides those modified to form the extensile ovipositor, 

 which consists of a long, stouter, basal segment and a much more slender 

 terminal segment (fig. 3), which latter bears at its tip a pair of minute 

 processes (fig. 3, ^). 



Length of body, exclusive of appendages, 0.08 in.; of wing, 0.1 1 in. 



Compared with the Pear Midge. 



This species is closely related to the pear rnidge, Diplosis pyrivora 

 Riley. It is apparently a more hairy form, though the badly rubbed con- 

 dition of the specimens of tiie pear midge examined would not permit of 

 the formation of a very accurate opinion in regard to this point. The 

 structure of the male antennae in both species is quite similar; in D. 

 fyrivora the arched filaments differ only in being much denser and darker 

 in color than in Z>. setigera — the general arrangement of filaments and 

 «etae is apparently the same. The orderly arrangement of the trans- 

 parent tubercles on the female antennae, described above, is not so 

 apparent in D. pyrivora, though the tubercles are larger than in Z>. 

 setigera. The facets of the eyes in the male are smaller and more dis- 

 tant than in Z>. pyrivora, and the same is probably true in the female. 

 The apical portion of the halter is suborbicular in outline in D. pyrivora 

 while in D. setigera it is subelliptical. Wings apparently much more 



