PSYI^IvID NOTES. 229 



Lot 1348 Sub 79. Five specimens with data "Colo. 2173. 7-18-96. 

 Denver, Colo. C. P. G. On willow^. Trioza near albiventris." The 

 facial cones of this lot were white. 



Lot 1348 Sub 80. Two specimens with data "Colo. 2173. 7-18-96 

 Denver, Colo. C. P. G. On willow." The face and facial cones of this 

 lot were black. 



Lot 1348 Sub 81. Seven specimens with data "Colo. 2785. 9-25-97. 

 Nev/ Windsor, Colo. C. P. G. Taken in sweeping wet ground." Cones 

 and face black in this lot. 



Lot 1348 Sub 82. Two specimens with data "Colo. 2785. 9-25-97 New 

 Windsor, Colo. C. P. G. Taken in sweeping ground." Cones white. 



Lot 1348 Sub 83. Seven specimens with data "Colo. 2767. 8-15-97 Ft. 

 Collins, C. P. G. On willow." Jet black head, and dorsal thorax. 



Lite;raturE. 

 191 1 Sulc, Dr. Karel. Monographia Generis Trioza Foerster. Part II, 

 p. 10. 



Trioza quadripunctata Crawford. 



Photographs of this species are given in Figs. 324, 333, 347, 

 and 353. The most striking feature is the heavy maculation 

 of the wing at the three marginal dashes and at tip of clavus. 

 As the species is pale in color these dark spots are particularly 

 conspicuous. The cephalic margin of wing is strongly bowed. 

 The wing, of specimen at hand is about 2.25 mm long. 



Lot 1342 Sub 3. Four specimens (male and female) given 

 me by Mr. J. J. Davis with data "Ft. Collins, Colo. 11, Nov. 

 1910 collected from common nettle Urtica, by Prof. C. P. 

 Gillette." 



Lot 1348 Sub 21. Six specimens with data "Boulder." 



Lot 1348 Sub 71. One specimen with data "Ft. Collins, CoK 5-12-99, 

 C. D. Ball." 



Lot 1348 Sub 86.- One specimen with data "Colo. 2248. 8-12-96. 

 Palmer Lake, Colo. C. P. G. 



Lot 1348 Sub 88. Probably this species, though dashes are not as 

 Tieavy as usual. One female with data "Colo. 2220. 8-6-96 Ft. Collins. 

 C. P. G. caught flying around light." 



Literature. 



1910 Crawford, D. L. American Psyllidae I, p. 2;^2i- 



191 1 Crawford, D. L. American Psyllidae III, p. 433. 



Triosa sfyli'fcra sp. nov. 



The yellow wing of this species is broadly and bluntly round- 

 ed and the heavy veins of an ordinary Triosa type of branching 

 as shown in Fig. 325. It measures about 2.4 mm in length. The 



