112 Myroii JIaniioii SK'oik 



infuscatcd, clearer alunit tliirtl sulimarginal cell, iiervures fuscous, stigma 

 pale testaceous. Coxal spines large and red. Basal tergitc of abdomen 

 red except for a small triangular patch at extreme base; tergite 2 black 

 at base, medially with a broad pale yellow band which is deeply excavated 

 on the anterior margin medially and the excavated area is red like tergite 

 T, the apical margin narrowly black; tergites 3-5 black with continuous 

 broad pale yellow bands, median on 3 and 4, apical and involving all of 

 the tergite except a basal line on 5. Venter red, stained with round black 

 spots on the middle of ajiical margins of sternites 1-4. 



Tyf^c. — Ute creek, Costilla county, Colorado, on sage flats. ]u]y 

 13, 1907 (R. W. Dawson), $. 



A very distinct species. In Cockerell's table of Rocky AToun- 

 tain Noiiiada it runs to 28 and then out because of the mainly 

 black mesothorax and red face marks. In his table in Proc. 

 Acad. Xaf. Sci. Phil., pp. 608-09, it runs to siuncii, but is not 

 closely related to that species, which is a Holonoiiiada. 



Genus Viereckella Swenk, 1907 



KEY TO THE NEBRASKA SPECIES 



Female 



Entirely shining black, the propodcnm and basal abdominal tergite highly 

 polished ; body nearly bare but with short sparse pale hair on the meso- 

 pleura, mesoscutellum, and metanotum, and loose thin lateral hair bands 

 on apical margins of tergites 1-5 ; inner side of hind tibiae with blackish 

 hair; wings heavily darkened, nervures and stigma black, the second 

 submarginal cell as long as the first or third ; joint 3 of antennae less 

 than two-thirds as long as" 4; pygidium moderately long, conical; 10 mm. 



obscura 

 Viereckella obscura Swcnk. 



1907. J'lercckclla obscura Swenk, Ent. Nezcs, XVIII, pp. 298-300, ?. 

 In 1907 the writer described the genus I'icrcckcUa from a 

 unique female specimen collected at Meadow, Sarpy county, 

 Nebraska, July 14, 1905, by P. R. Jones, and this specimen is 

 still the entire basis of the type species of the genus, V. obscura. 

 In 1878 Cresson described Noiiiada pilosula from a unique male 

 specimen from New York, in the Trans. Am. Ent. Soc, VII, p. 

 yy, and in 1909 Graenicher recognized this species in material 

 collected in Wisconsin, according to records in the BnUct'm of the 

 Wisconsin Xat. Hist. Sac, Yll, pp. 45. 46 and 64. In 191 1, 



I 12 



