HEMIPTERA OF COLORADO. 
57 
black; rostrum and throat rust-brown. Pronotum fuscous, coarsely granulated, narrower 
than the base of the wing-covers, and somewhat quadrangular in outline, the lateral 
margins a little reflexed, the posterior margin distinctly curved, anterior angles a little 
rounded, the anterior margin wider than the breadth across the eyes. Wing-covers pale 
greyish-yellow, with irregular patches of dark brown granules aggregated more particu¬ 
larly near the base and along the disk; the large pale spots at base angular and tinged 
with greenish; veins mostly dark brown, very prominent, the area on the apical border 
pale, crossed by the divaricating inner vein and the one next outside from it, the areoles 
are continued to near the apex, and the discoidal one is crossed by four oblique veins. 
Underside rust-brown, obscured by some darker patches, and set with a few small 
granules, the orifices of the stigmata placed in knobs. 
Length to end of hemelytra 2 mm. Width of base of pronotum .75 mm, Only one 
specimen has been brought to my notice. It is a male sent to me from Colorado. This is 
the most remarkable form of the family Tingidae which has yet been placed within my 
reach for study. It is a synthetic type which unites in itself a structure of wing-covers 
closely related to Oxycarenus, of the family Lygaeidae, and on the other hand, the 
characteristic head of Piesma and the granular surface of A gi amma. Taken in all its 
features it is the most peculiar form of Tingid which has yet been discovered in North 
America. The other sex is unknown to me and it might add further characteristics to 
the genus if once brought to notice.” 
Estes Park, July 12th (Gillette). 
Corythuca arcuata Say. 
Colo. (Gillette—see Osborn, 1). 
Fort Collins, July 29tli (Baker). Foot-hills five miles west 
of Fort Collins, April 25th to August 1st (Gillette and 
Baker). Steamboat Springs, July 26th (Gillette). 
Corythuca ciliata Say. 
Custer County, midalpine (Cockerell, 10). 
Fort Collins, May 81st on alfalfa (Baker). Steamboat 
Springs, July 16th and 26tli (Baker and Gillette). Montrose, 
June 24th (Gillettee). 
Corythuca fuscigera Stal. 
Fort Collins, July 2d in all stages on Cnicus; Steamboat 
Springs, ouly 15th (Baker). Colorado Springs, August 3d 
(Gillette). 
Gargaphia tiliae Walsh. 
Rist Canon, May 29th (Gillette). 
Aradus acutus Say. 
Colo. (Uhler, 6). Roaring’ Fork (Rothrock—see Uhler, 2). 
Fort Collins, March 31st (Gillette). 
Aradus affinis Kirb. 
Dolores, June 18th: Estes Park, July 9th (Gillette). 
