THE JUMPING PLANT-LICE OR PSYLLID^ OF THE NEW WORLD. 89 



TRIOZA MAURA Fdrster. 

 Figs. 190, 192, 354, 365, 370, 371, 372, 517, 520, 522. 



Trioza maura FoERSTER '48:94. — Meyer-Dur '71:387.— Loew '82:242; '84:144 

 (nymph); '88:24.— Oshanin '07:376.— Sulc '11:10 (bibliography 

 and good figures). — Patch '12b: 228. 



Trioza helvetina Meyer-Dur '71:388, 391. 



Trioza nigrifrons Crawford '10a:230; '10b:351. 



Trioza fuhida Crawford '10a: 231; '10b:358. 



Trix)za fulvida similis Crawford '10b: 359. 



Trioza aurantiaca Crawford '10a,: 231; 10b: 360; 'lie: 628. 



Length of body 1.8 to 2.3 mm; length of forewing 2.8 to 3.5; 

 width of head 0.65 to 0.73. General color variable from light orange 

 yellow to dark reddish brown or dark red; vertex and cones usually 

 reddish, sometimes pale on margin, occasionally dark brown or even 

 black; antennae white usually on basal third or half, the rest orange 

 to black; abdomen pale ventrad, though sometimes not; legs orange, 

 tarsi often black. The autumn forms are usually darker than the 

 spring forms. 



Head narrower than thorax; vertex rather fiat, a Uttle more than 

 half as long as broad, with front margin broadly and evenly rounded 

 and raised slightly, with a shallow or deeper foveal impression discally 

 on each side of median Une. Genal cones two-thirds to three-fourths 

 as long as vertex, divergent, acute, sUghtly pubescent, more or less 

 deflexed from plane of vertex. Antennae about one and a haK times 

 as long as width of head, nearly always whitish at base. 



Thorax strongly arched, punctate; pronotum short; legs slender to 

 rather stout; hind tibiae with two black spines at apex on inner side 

 and one without. Wings variable in length, usually about two and 

 a haK times as long as broad, subacute to narrowly rounded at apex, 

 usually clear, but sometimes more or less fulvous or smoky, anal angle 

 black; Rs usually long, rarely shorter and straight. 



Genitalia. — 3Iale. — Anal valve short, with an ovate, lobate pro- 

 longation caudad reaching about to base of forceps, longer than 

 broad; anus on a sHghtly elevated ring above caudal prolongation. 

 Forceps long, curved forward, very acute, and acuminate, sharply 

 edged. Female. — Genital segment very short, scarcely longer than 

 preceding segment, acute at apex, dorsal valve slightly longer than 

 ventral. 



Described from numerous males and females from the following 

 localities: California: Laguna Beach (Crawford), August, 1911, on 

 Salix lasiolepis; Los Angeles (Coquillett) ; Placer County (Koebele), 

 September, on Salix lasiolepis; Nevada County (Koebele), Septem- 

 ber; Folsom (Koebele), August 18, 1885, on Salix longifolia (these 

 bear the manuscript name of Trioza saliciperda Riley); San Mateo 



