P<lMONA C'ol.I.KOK .lorRN.M. OK F.NTOMOLOOV 631 



Described from three males and seven females taken by Ellsworth Bethel 

 at Boulder, Colorado, on leaves of Rihes longiflorum. This species somewhat 

 resembles members of the genus Psylla in the wing characters, but in others it is 

 very close to the genus Psyllopa. 



Psylla alni trima.culata ii var. 



Body dimensions approxiniately the same as for the variety americana Crawf. 

 Body large; general color yellowish orange, with a large, dark, brownish orange 

 macula on dorsulum cephalad, and two on each side of scutum with a narrow stripe 

 of yellow between; eyes black. 



Head and vertex similar to var. americana; vertex broadly excavate, short; 

 facial cones of medium length, almost as long as vertex, scarcely differentiated 

 sharply from vertex at base, divergent, quite acutely pointed at apex, scarcely 

 pubescent. Thorax as in other varietal forms. Wings large, hyaline, broadly 

 round<'d at apex ; venation quite similar ; pterostigma narrow. Female — Abdomen 

 large; genital segment moderately stout, almost as long as rest of abdomen, quite 

 acute at apex. 



Described from two females from Gowanda, New York (E. P. Van Duzee). 

 It is possible that future study will show this to be a distinct species, but hardly 

 probable. 



Trioza montana n. sp. 

 (Figure '209, A, E) 



Length of body. '■2.7 mm.; length of forewing, 3..S mm.; greatest width, 1.3 

 mm.; width of vertex between eyes. O-.i-t mm.; with eyes, 0.88 mm. General color 

 greenish yellow throughout. Body quite large. This species is very similar in 

 many respects to Triosa albifrons Crawf. The characters not mentioned here 

 may be inferred to be the same as in that species. 



Vertex discally with a foveal impression on each side, suleate at anterior 

 I xtremity; roundly bulging forward over antennal bases, rather whitish to whitish 

 yellow. Facial cones rather short, divergent, subacute at apex, strongly depressed 

 from plane of vertex at base. 



Thorax arched; pronotum moderately long; episternum moderately large; 

 forecoxa- not large; dorsulum long. Wings large, hyaline, quite acutely rounded 

 at apex, about two and a half times as long as broad; second marginal cell smaller 

 than first; second cubital very long; radius long, curved; apex of wing within 

 second marginal cell. 



Male — Genital segment relatively small ; claspers short, stout, subacute at 

 apex, not strongly arched laterally ; anal valve scarcely longer than claspers, 

 simple, roundly acute at apex, broad at base. Female — ^Abdomen large; genital 

 segment distinctly shorter than rest of abdomen; dorsal plate scarcely longer than 

 ventral, quite acute at apex. 



Described from three males and six females collected at the summit of Old 

 Baldy, near Clareniont, Calif. (Crawford), on foliage of Pinus ponderosa, white 

 fir (Abies) .-ind a spruce (species unknown to writer). This species, though 



