226 MAINE AGRICULTURAL EXPERIMENT STATION. I912. 



tinguishable from that of longistyliis which is shown in Fig. 

 320. It measures about 3.5 mm. 



Literature. 



1910 Crawford, D. L. American Psyllidae I, p. 229. 



1910 Crawford, D. L. American Psyllidae II, p. 347. 



1911 Crawford, D. L. American Psyllidae III, p. 435. 



Triosa diospyri (Ashmead). 



'The head, wing and female cauda of this species are shown 

 in Figs. 331, 318, and 357. The wing is clear with the veins 

 slender and distinct. It measures about 3.8 mm. The three 

 marginal dashes are especially narrow. 



Lot 1339 Sub 47. One male and one female with the data 

 "Trioza diospyra L,e Baron? River Des Peres, St. Louis, Mo. 

 June 2, 'yy. Persimmon. Cornell LT. Lot 62. Collected by 

 Theo. Pergande and determined by Uhler. Given J. H. C. by 

 Pergande." 



Literature. 



1881 Ashmead, Wm. H. Canadian Entomologist. Vol 13, p. 222. 



Psylla diospyri. 

 1894 ('95) Mally, C. W. Proceedings of the Iowa Academy of Sciences. 



Vol. 2, p. 154. Triosa diospyri Ashmead, listed. 



1909 ('10) Smith, J. B. Insects of New Jersey, p. no, listed. 



1910 Crawford, D. L. American Psyllidae II, p. 352. Triosa 



diospyri Ashmead (latipennis Crawford.) 



Triosa dubia sp. no v. 



Lot 1339 Sub 17. Two females and one male with data "S. 

 Francisco dunes. Cal. 11 Nov. 1907. Bradley." Lot 1339 Sub 

 19. One female lent by Cornell University with data "Berkeley, 

 Cal. 5 Nov. '06. J. C. Bradley." 



The name of this species indicates the amount known con- 

 cerning it at time of description. The wing measures about 

 2.75 mm in length. It is clear and unmarked except for the 

 three marginal dashes common in this genus. The venation as 

 shown in Fig. 319 is much like that of inmira. The head with 

 moderately long dark facial cones contiguous in basal two- 

 thirds, distal third divergent, subacute at tip, is of the same 

 gei^eral type as maiira. The caudal segment of male has long 

 slender forceps strongly curved cephalad when viewed laterally. 



