430 Pomona Colleck Journal of Entomology 



Trioza tripunctata (Fitch) i\iley 



(Fig. 152, A: 153. G: 154. A; 155. A) 



(Psylld tripunctata Fitch) (Non Trioza tripunctata Low) 



Length of body (female) 2.8 mm.; (male) 2.3 mm.; length of forewing 

 3.5 mm.; greatest width 1.5 mm.; width of vertex between eyes .49 mm.; 

 with eyes .80 mm.; general color brown to dark l)rown. dorsum black; liead 

 lighter; antennre yellowi.sh, black at tip. 



Head deficxed, rather coarsely punctate, with eyes not as broad as thorax. 

 Posterior margin of vertex narrowly elevated over middle half, slightly 

 arcuate; vertex raised plate-like on each side of median suture; with a shallow, 

 oblique depression on each side extending from posterior marginal ridge 

 toward front and eyes ; anterior margin of plates down-curved and emarginate 

 at median suture. Eyes very prominent; anterior ocellus imbedded between 

 conical insertion of antennae and base of facial cones. Facial cones medium 

 in length, rounded apically. quite (hvergent, subvertical. moderately pubescent. 

 Antennje of usual triozal form, yellowish, except two apical segments and 

 tips of intermediate segments black. 



Thorax coarsely punctate, quite .strongly arched. Pronotum moderately 

 short, distinctly depressed below head and dorsulum ; dorsulum quite heavy, 

 ascending strongly, roundly acute cephalad, about as long as scutum. Meta- 

 sternal spurs short. Wings quite large, roundly acute apically, almost two 

 and one-half times as long as broad, broadest across middle of first marginal 

 cell, distinctly narrowed in basal half ; hyaline, except three brown bands 

 along first and second cubital and radial veins and covering both marginal 

 cells; radius not quite as long as second cubital, flexed midway; marginal 

 cells subequal and similar in shape : third furcal vein very short ; ventation 

 brown, conspicuous. 



Male. — Genital segment prominent, not as long as two preceding segments : 

 claspers stout, simple, long; anal valve large, extending beyond base of 

 claspers. Pubescence short and sparse. Female. — Genital segment very 

 long, almost as long as rest of abdomen, very slender and acute; dorsal plate 

 slightly overreaching ventral and less acute ; genital pore .scarcely one-fourth 

 as long as dorsal plate ; ventral plate very acute ; ovipositor very long and 

 acute (exserted in type female) ; pubescence .sparse and short. 



Redescribed from one male and one female taken bv Mr. F. A. Sirrine 

 at Jamaica, Long Island, October 11th. 



This species was described briefly by Fitch in 1851 as follows: "Wax 

 yellow, dorsum black ; legs and antennse pale yellow, the latter black at the tips : 

 elytra hyaline, nerves brown, beyond the furcation widely margined with 

 smoky fulvous ; a blackish dot on the middle of the terminal margin of each 

 of the inner apical cells. Length 0.16 inch." The specific name was derived 

 from the three marginal dots common to nearly all the Triozas. In \?,77 i-.. 

 Franz Low described a new European Psyllid as Trioza tripunctata. not know- 

 ing of course that there was another Trioza of the same name then classed 

 as a Psytla. In 1893 Riley placed Fitch's Ps. tripunctata in the genus Trioza, 



