Pomona Colleck Journal oi" Entomology 4M 



Head quite strongly fleflexed. very sliglitly imi)iiiictalc. with eyes ikjI a^ 

 broad as thorax. Posterior inartjin of vertex arcuate, shghtly ilevated over 

 middle one-third, scarcely emarginato at median suture: vertex scarcely raiseil 

 |3late-likc; discal area with a siuall f<n'ca on each side posteriorly and a shallow 

 divergent dejjression extending downward toward front. Facial cones shori, 

 vertical, scarcely divergent, almost straight and parallel on inner margin, quite 

 acute, pubescence short and spar.se. .\nteiui;e inserted on frons and side of 

 facial cones ; form of antennsc as usual in genus. 



Thorax nut strt)ngly arched, more coarsely iiimctate than vertex, ratlv.r 

 slender. I'ronotnm short, depressed below head and dorsnlum. nearer to level 

 of dorsnlum than of head. Dorsnlum ascending, about as long as scutum. 

 ^^etasterna] spurs short. IVitii^s hyaline, very slender, fully three times as 

 long as broad, broadest across first marginal cell, subacute apically ; fir~t 

 furcal quite short, second and fourth subcqual ; venation brownish yellow, not 

 conspicuous. 



Female. — Genital segment very short, about as long as two preceding ter 

 gites : dorsal plate very slightly longer than ventral, very bro.idly rounded 

 apically: ventral plate acute and somewhat beaked at tip: pubescence short 

 and sparse. 



Described from tliree females from Arizona in the C. F. liaker collection. 



Trioza minuta similis Crawf. 



Rody small, slightly larger than species. \'ertex very similar in form : 

 facial cones less parallel and straight on inner margin, more divergent. 

 Thoracic characters very similar to species. Wings slightly larger, but simi- 

 larly veined. Female genitalia quite similar to species. Male. — Genital seg- 

 ment rather short : clasjiers slender, simple, incurved apically. .\nnl valve 

 proportionately rather large, bilobate. with posterior lobe. 



Described from several males and females from Oregon in the (". F. I'aker 

 collection. 



Trioza quadripunctata Crawf. 

 (Fig. \?2. K: 153. II: l.M. C : l.^.\ D) 



Length of body 2.3 nun.; length of forewing 3.3 nun.; greatest width \.? 

 nun.: width of vertex between eyes .42 mm.: with eyes .71 mm. General color 

 greenish yellow: antenn.T black in distal half. 



Head deflexed. somewhat punctate, with eyes almost as broad as thorax. 

 Posterior margin of vertex narrowly elevated over middle two-thirds, slightly 

 arcuate: vertex not elevated plate-like: discal area with a small fovea on 

 each side between median suture and posterior ocellar area, and a sidcate de- 

 pression exteniling obli(|uely toward front and lower margin of eye : broadly 

 and dee]ily emarginate anteriorly at median suture, and protruding hiloMareiy 

 over frons; median siuure distinctly emarginate: facial cones medimn in length, 

 rather acute, quite strongly divergent, usually snbvertical. sometimes almost 

 horizontal, pubescence rather sparse and brief. .•Xntennne inserted under pro- 



