THE JUMPING PLANT-LICE OR PSYLLID-E OP THE NEW WORLD. 29 



APHALARA RUMICIS Mally. 



Figs. 164, 384, 501. 



Aphalara exilis rumicis Mally '94:166. 



A. rumicis Patch '12b:217. 



A. calthx maculipennis Crawford 'llb:496. 



Very similar to calthse, differing chiefly in having the clypeus 

 shorter, subglobose or pyriform as in most species, and not projecting 

 downward. Male forceps with a tooth on anterior inner margin 

 much farther from apex than in calthx. Wings usually more decidedly 

 colored than in caZi^as, pattern similar. 



Described from several specimens of both sexes from Ames, Iowa 

 (C. W. MaUy), on Rumex altissimus, March, 1895; several from St. 

 Louis, IVIissouri (J. T. Monell), on Rumex sp., September 22, 1911 

 (loaned by Miss Patch). In this species are placed also for the 

 present at least other specimens from Evanston, Wj^oming (Koebele), 

 June 15, 1885; Hood River, Oregon (Hubbard and Schwarz), May 25; 

 Placer County, Cahfornia (Koebele), Sept.; Scotia, Cahfornia (H. S. 

 Barber), May 20; Boulder, Colorado (E. Bethel), on Sophia pinnata; 

 Piano, Texas (E. S. Tucker), "in corn field," June, 1907. 



These latter specimens were named A. calthse maculipennis Loew 

 in a former paper (Crawford lib: 496), and it is possible that all of 

 these mentioned under rumicis belong to Loew's species. No good 

 specimens of the latter, however, are available for comparison, and 

 until they are it will create less confusion to designate our American 

 forms as rumicis, instead of by the European name. 



APHALARA ARTEMISI.S: Forster. 



Aphalara artemisise Forster '48:96. — Scott '76:67; '77:283. — Reuter '81:152. — 

 Loew '82:232; '88:12.— Sulc '06:1.— Edwards '08:86; (not 

 '96:232).— KuwAYAMA '08:154.— Crawford 'llb:496. 



Psylla malachitica Dahlbaum '50:177. 



Length of body (male) 1.3 to 1.5 mm; (female) 1.7; length to tip of 

 folded wings usually about 2. General color whitish to very pale 

 flavous; wings spotted. Body small. 



Vertex slightly more than half as long as broad, with a large shallow 

 depression on each side of median line; cl3rpeus pyriform. Antennae 

 about as long as width of head or shorter. Thorax not strongly 

 arched, coarsely punctate. Legs short. Wings smaU, not over two 

 and a half times as long as broad, covered sparsely with small round 

 brown spots; membrane somewhat thickened, divided by a series of 

 fine dots into numerous ceU-Uke divisions (visible only under high 

 magnification), each brown spot covering one of these. 



Genitalia. — Male. — Anal valve relatively rather small; forceps 

 somewhat enlarged at apex, with a small tooth on inner anterior side 



