152 BULLETIN 85, UNITED STATES NATIONAL MUSEUM. 



PsyUa striata Patch), Polk County, Wisconsin (Baker). The 

 northern specimens are smaller than the southern forms and come 

 closer to carpinicola. 



Type in author's collection. 



PSYLLA ANNULATA Fitch. 



Figs. 77, 80, 258, 301, 466. 



Psylla annulata Fitch '51: 64. — Ashmead '81:222. — Riley '83:70. — Lintner 

 '93:64.— RiLEY(inLintner'93:411.—MALLY '94:153.— Patch '12b:220. 



Length of body (male) 2.1 mm.; (female) 2.7; length of forewing 

 3.8; width of head 1.08. General color straw-yellow; antennae 

 straw-yellow, annulated with black on basal half. 



Head relatively very broad; vertex not half as long as broad, with 

 a more or less conspicuously constricted annular, stalk-like area 

 between base or inner margin of eye and elevated portion of vertex 

 and posterior ocellus; genal cones longer than vertex, divergent, 

 acute to subacute, pubescent. Antennae long, about two and a half 

 times as long as width of head, not as slender as in carpinicola. 

 Legs rather stout; hind tibiae with a large spur at base; wings large, 

 clear, or slightly yellowish; pterostigma large. 



Genitalia. — Male. — Genitalia similar to carpinicola. Female. — 

 Genital segment much shorter than in that species, not as long as rest 

 of abdomen, dorsal valve a little longer than ventral. 



Described from one pair from Ames, Iowa (Mally), which seems to 

 fit very well Fitch's brief description. Miss Patch ('12b: 219) states 

 that the species is abundant at Middletown, Connecticut, on Rock 

 Maple, Acer saccliarum Marsh. Fitch stated that the species occurs 

 on maple, so that it seems very probable that this is his species. The 

 black annulation of the antennse seems to be very constant, and this, 

 together with the fact that it seems to be restricted to the maple, 

 probably indicates that it is a species distinct from the very closely 

 related negundinis of Mally. 



PSYLLA NEGUNDINIS Mally. 

 Psylla negundinis Mally '94:155.^ — Patch '12b: 220. 



Exceedingly close to annulata, differing chiefly in antenna! colora- 

 tion and in food-plant. Antenna? without black annulation, straw- 

 yellow, except terminal joint black. Food-plant. — Negundo sp. (box 

 elder). Were it not for the constant, though slight, difference in 

 color and the difference in food-plants, I should not hesitate to make 

 this species synonymous with annulata, as perhaps it is. 



Described from several males and females from Ames, Iowa (C. W. 

 Mally), on box elder, August 16, 1894 (determined by MaUy); Polk 

 County, Wisconsin (Baker); Colorado (GiUette), no data; several in 

 the National Museum collection with only the data ''3658, June 

 20, '85." 



