THE JUMPING PLANT-LICE OR PSYLLID-ffi OF THE NEW WOELD. 77 



A^. Anal valve without long posterior lobe but posterior margin arcu- 

 ately rounded caudad; forceps strongly arched laterally; ver- 

 tex bulging in front; hind tibiae usually with three apical spines 



inside albifrons Crawford. 



o^. Wings angulate at apex, sometimes broadly so. 

 h}. Female genital segment more than half as long as rest of abdomen; 

 antennse about one and one-third times width of head; wings 



rather narrowly acute at apex alacris Flor. 



V. Female genital segment less than half as long as rest of abdomen; 

 antennse about one and a half times width of head; wings rather 



broadly acute at apex salicis Mally. 



(P. Antennse about two and a half times as long as width of head; body and 

 wings small; pronotum rather long; apical spines on hind tibiss very 



small viridis Crawford. 



c^. Prsescutum distinctly longer than broad; body large; gall-makers. 

 d^. Antennse twice as long as width of head; head nearly or fully as broad as 

 thorax. Galls on leaves of Magnolia; nymph not pubescent. 



magnolise Ashmead. 



(P. Antennse about one and a half times width of head; head usually much 



narrower than thorax. Galls on leaves of Persea (avocado or aguacate); 



nymph pubescent koebelei Kirkaldy. 



TRIOZA BAKERI Crawford. 



Trioza baheri Crawford '10a:235. 

 Trioza viontana Crawford '11c :631. 



Length of body 2.2 mm.; length of forewing 3.5. General color 

 brown, light to dark; dorsum and abdomen sometimes darker; 

 antennse black at tip. Vertex and no turn covered with fine short 

 pubescence. Body large. 



Head somewhat deflexed, almost as broad as thorax, large; vertex 

 more than half as long as broad, pubescent, each lobe rounded 

 broadly in front, with a foveal impression posteriorly on each side 

 of median line; genal cones about two-thirds as long as vertex, 

 divergent, acute to subacute, not much deflexed from plane of vertex. 

 Antennae scarcely longer than width of head, a little tliicker rela- 

 tively than in most species of the genus. 



Thorax broad, arched, punctate, pubescent and shghtly pulveru- 

 lent. Pronotum long, not as conspicuously descending cephalad as 

 usual. Hind tibias with tlu-ee inner apical spines. Wings large, 

 two and two-thirds times as long as broad, acute to subacute at 

 apex; Rs very long, reaching nearly to apex of wing. 



Genitalia. — Male. — Anal valve triangular in profile, with base 

 broad and apex roundly acute, slightly longer than forceps; forceps 

 thick, flattened, somewhat arcuate, apex not acute. Female. — 

 Genital segment large, nearly as long as rest of abdomen; valves about 

 equal in length, pubescent. 



Described from one pair from Claremont, California (C. F. Baker); 

 eight males and females from the mountams of the same locality 

 (Crawford), collected in June on the fohage of Pinus ponderosa, 



