352 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



female. — Abdomen somewhat dilated in center; dorsal segments dark 

 brown, except posterior borders brownish yellow ; ventral segments greenish 

 white. Genital segment short, about as long as anal segment ; dorsal plate 

 longer than ventral ; both plates with a short, acute projection apically ; style 

 slightly exserted; pubescence very short and sparse. 



Described from one female, taken in Gunnison, Colorado, by C. F. Baker. 



Trioza similis n. sp. 



(Figs. 128 M; 129 J; 130 F.j 



Length of body, 2.6 mm. ; length of forewing, 3.5 mm. ; greatest width 

 1.6 mm.; width of vertex between eyes, .42 mm.; with eyes, .66 mm.; general 

 color, light brownish yellow. 



Head slightly deflexed, finely punctate ; with eyes not as broad as thorax. 

 Posterior margin of vertex arcuate, narrowly elevated in center; discal area 

 with a fovea on each side near posterior margin and nearer to median suture 

 than to posterior ocelli ; with a narrow sulcus connecting the two fovea and an 

 oblique depression extending from each fovea to insertion of antennae; frontal 

 plates not raised plate-like. Eyes not as prominent as usual ; anterior ocellus 

 at angle of facial cones, slightly visible from above. Facial cones quite long, 

 strongly divergent, acute at tip, subhorizontal and distinctly visible from above, 

 pubescence mostly basal, very sparse on distal half. Antennas inserted on 

 vertical frons above base of cones ; two basal segments large, remaining 

 segments filiform, black on apical half. 



Thorax moderately arched, ascending somewhat beyond anterior margin 

 of scutum ; finely punctate. Pronotum short, depressed below dorsulum and 

 head and scarcely visible from above. Dorsulum quite strongly ascending, 

 roundly pointed anteriorly; both dorsulum and scutum faintly marked with 

 light brown. Wings hyaline, about two and one-third times as long as 

 broad, broadest across first marginal cell; rounded apically; radius longer than 

 second cubital; fourth furcal terminating at apex of wing; venation light 

 brown, not conspicuous. 



female. — Genital segment as long as two preceding segments, slightly 

 deflexed ; dorsal plate a trifle longer than ventral and less acute ; pubescence 

 sparse and very short. 



Described from three females in the C. F. Baker collection, taken in 

 Colorado. Type specimen in National Museum. 



TRIOZA DiosPYRi Ashmead. 

 Synonyms : Psylla diospyri Ashm. 



Trioza latipennis Crawford. 

 (Figs. 128 I, J; 129 K; 130 L.) 



Length of body, 2.5 mm. ; length of forewing, 4.4 mm. ; greatest width, 

 1.8 mm,; width of vertex between eyes, .47 mm.; with eyes, .79 mm. General 

 color, shining l)lack, legs partially yellow. Pubescence conspicuous. 



Head moderately deflexed, very finely punctate on frons, with eyes almosl 

 as broad as thorax ; pubescence moderately long and dense and covering most 

 of head. Posterior margin of vertex .shaqily elevated, slightly arcuate, and 



