440 journal of ecoxqmic entomology [vol. 10 



General Appearance 



Eggs (Fig. 23 D). — The eggs are very pale yellow or transparently- 

 white with a darker yellow or orange-colored area near the tip. The 

 entire surface is covered with a very fine whitish powder which gives a 

 grayish color. The shape is elongate-oval with a pointed base and 

 short stipe which is attached to the leaves and a broadly rounded top. 

 The length averages about 0.07 mm. 



Nymphs (PI. 20, fig. 4 and fig. 23). — The nymphs are pale yellow or 

 partially orange-colored and are covered with a thick white cottony 

 wax which is unevenly arranged and entirely hides the body. The 

 naked bodies are rather slender and only about 2 mm. long while with 

 the covering they appear decidedly wide and from 3 to 4 mm. long. 

 When ready to emerge as adults the nymphs leave the galls, which 

 are made at the edges of the leaves and which afford very good 

 protection, and crawl out on the flat surfaces of the leaves where the 

 old skins are left behind. These cast skins are commonly mistaken 

 for the living forms. The bodies are covered with simple and spear- 

 shaped spines (Fig. 23 C). 



Adults (PL 20, fig. 4 and fig. 23). — The adults greatly resemble 

 those of the tomato psyllid in general aspects. The bodies are pale 

 amber with darker brownish or nearly black markings, as shown 

 in the accompanying drawing (Fig. 23). On many of the individuals 

 there is a noticeable narrow white line across the dorsal base of the 

 abdomen; while in others this line is entirely absent. The legs and 

 antennae are pale yellow, with the last two joints of the antenna? black 

 (Fig. 23 A, J). The length of the body averages about 2 mm. 



Technical Description 



Crawford gives the following technical description of the adults: 



Length of body 1.9 mm.; length of forewing 3.2; width of head 0.71. General 

 color greenish yellow to light brown ; dorsum in darker individuals more or less striped 

 and streaked with brown; abdomen often broAvn; antenna? black at tip. 



Head nearly as broad as thorax, not strongly deflexed; vertex more than half as 

 long as broad, emarginate in front at median hne, with a prominent sulcate impres- 

 sion on each side of median line and parallel to it; genal cones scarcely two thirds as 

 long as vertex, divergent, subacute, not much depressed from plane of vertex. An- 

 tennae about one and a third times width of head, slender. 



Thorax not broad, well arched, punctate; pronotum moderately long, not strongly 

 depressed; prsescutum rather large. Legs slender; hind tibiae with two black spines 

 at apex on inside and one outside. Wings long, slender, transparent, fully three 

 times as long as broad, subacute at apex; Rs short. 



Genitalia. — Male. — Anal valve a little longer than forceps, hind margin arcuate, 

 with long pubescence; forceps rather stout, sides almost parallel (from side), ter- 

 minating in a subacute, black point at apex. Female. — Genital segment nearly as 

 long as rest of abdomen, acute at apex, valves subequal in length. ^ 



• Crawford, D. L., Bui. 85, U. S. Xat. Mus., pp. 94-9-5, 1914. 



