N0.1215. IIEVISIOX OF rilK (IKXUS TRIMKROTUi )l'IS—M>M:i IJ_, 4;>() 



apically and on the basal half, where it is interrupted by a taint, liuht 

 annuhis. 



Length of body, maU^, 18 nnn., female, 25 nnn.; leno-th of tetrinina, 

 male, 20 mm., female, 25 nnn.; length of posterior femora, male, 1(J 

 nnn., female, 12^ nnn. 



One male and one female, Pine Bluffs, Wyoming. Brunei- collec- 

 tion. K(>adily distinguished by its small size and the character' of the 

 wing iuid wing markings. 



TRIMEROTROPIS VINCULATA Scudder. 



TVhiierotwpis r'nirnhitd Sccddeh, Ent. Notes, V, 1875-70, p. 25; App. II, Second 

 Kept. U. S. Ent. C(jni., ISSO, p. 27, pi. xvii, ti<j. 11.— Bkuner, Bull. Wash. 

 Coll., I, 18S5, p. 134. 



Tr/;/vm;^TO/j.sy'.s- rmcto SAU.ssruK, IVodr. (Edij)., 1884, j). 171. 



Size medium to large; color light or dark thrown, nuu-h \aried with 

 fuscous; scutellum strongly sulcate, with the median carina about as 

 distinct usually as the lateral, these divergent and plainlj' angulate 

 opposite the front margin of the eyes; eyes as long as the genal 

 groove in the male. Pronotum with the median carina moderately 

 cristate; the anterior lol)e of the crest of the prozone considerabl}'^ 

 longer than the posterior lobe; metazone nearly twice as long as the 

 prozone, its disk finely granulate without any scattered largcu- granu- 

 lations; process of the metazone slightly acute-angular, with the sides 

 straight and the tip plainly rounded. Tegmina with the bands mod- 

 erately or very distinct, the l)ase being usually sutl'used with reddish 

 brown which gradually becomes diluted farther from the base. The 

 area of the cubital forks is never very broad, occupied by several rows 

 of polygonal cells (female) or l)y one row (at least at the base) of sub- 

 quadrate cells (male). Wings long, scarcely less than twice as long 

 as broad, with the posterior margin nearly straight and parallel with 

 the anterior, the apex drawn out and attenuated; disk, varying shades 

 of yellow, sometimes tinged with bku>; fuscous ])and very distinct and 

 rather narrow, rarely as much as one-sixth the length of the wing, 

 with the spur short, extending plaiidy less than halfway to the ])ase, 

 on the posterior margin crossing the eighth lobe and reaching nuich 

 beyond the middle, rarely it fades scarcely beyond the middle. Pos- 

 terior femora generally distinctly ])anded on the outei- face; lower 

 sulcus black with one light subapical band. Posterior tibite obscure 

 yellow without any distinct subapical light annulus. 



Length of body, male, 22 to 24 mm., female, 29 to 30 mm.; length 

 of tegmina. male. 25 to 28 mm., female. 30 to 33 nnn.; length of 

 posterior femora, male. 12 to 12^ mm., female, 14 to 15 mm. 



Western North America, extending eastAvard to middh> Nebraska, 

 Kansas, and Texas, the edge of the Great Plain. 



A common species not contiiicd to barren ground, but common along 

 roadsides and in drv, cultivated fields. 



