FRUIT FLIES OF GENUS TOMOPLAGIA — ^ACZEL 393 



Cephalic bristles brownish yellow and somewhat flattened; three 

 pairs of incurved lower orbital bristles, relatively short, anterior pair 

 slightly shorter than posteriors and not longer than posterior pair of 

 recurved upper orbital bristles (ors). Genal bristle not very distinct. 

 Anterior pair of ors subequal to outer vertical and ocellar bristles. 



Thorax with scutellum 1.9 (2.0) mm. long and 1.5 (1.6) mm. wide, 

 testaceous to ochraceous yellow in ground color; mesonotum densely 

 covered with pale brass-yellow pruinosity and short appressed yellow- 

 ish hairs, thickish and shining except for the shining narrow hind 

 margin; no vittae of differently colored dusting, but three linear 

 structural vittae, visible only from behind, in darker color: one on 

 median line and two on lines of dorsocentral bristles. On hind region 

 of mesonotum the usual pair of lateral black spots, each between 

 prescutellar and upper postalar bristles, and a small black dot behind 

 (and beneath) wing base. In a single male specimen (from Corrientes) 

 the partly obliterated remains of a median pair of black spots between 

 the usual pair, which are pale brown m color and nearer to scutellar 

 suture than the usual spots, distance between them approximately'' 

 equal to its diameter. Pleura shining, except the whitish dusted 

 mesopleuron (anepisternite) and sternopleuron (katepisternite) ; 

 marked with three black spots: a shining and oval one on sternopleuron 

 below bristle (in some specimens it is brownish yellow), a large one 

 above hind coxa on metapleura, and on inferior margin of pleuro- 

 tergites a double one which is almost always wider on dorsal pleuro- 

 tergite. Scutellum shining ochraceous yellow with some yellowish 

 hairs on sides. Median region of postscutellum yellow, the lateral 

 ones black. Mediotergite shining intensive dark testaceous yellow. 



Thoracic bristles brownish yellow and somewhat flattened; inferior 

 mesopleural bristle three-fourths as long as, and much weaker than, 

 superior; posterior notopleural bristle slightly to considerably weaker, 

 shorter than anterior. Dorsocentral pair situated approximately in 

 anterior third of distance between transverse suture and supra-alar 

 bristles (sa) and only slightly wider spaced than prescutellar pair, 

 which stands approximately in posterior third of distance between sa 

 and upper postalar bristles. Apical pair of scutellar bristles only 

 slightly shorter than basal pair and slightly divergent. 



Coxae and legs testaceous yellow, distitarsi of mid and hind legs 

 usually darkened. 



Wings with the characteristic pattern of the genus; tip of humeral 

 cross-vein brownish black, costa blackened only at tip of subcosta. 

 Basal band abbreviated, ending m a diffuse transparent brown cloud 

 distad to anal vein. Subcostal cell (stigma) 2.0 (2.9) times as long as 

 basally broad. First costal section 0.73 (0.66), second 1.34 (1.50), 

 third 0.77 (0.77), and fourth 0.50 (0.48) mm. long. Basal section of 

 the fourth longitudinal vein 1.07 (1.13), median (penultimate) 0.34 

 (0.34), and ultimate 1 .27 (1 .43) mm. long. Inner cross-vein 0.34 (0.34) 



