1929] 
Notes on Aphrophora salicis De Geer in America 
55 
spittle, a single individual to a mass. (Fig. 1.) The froth 
dries somewhat, forming an arched vault in which the 
nymph transforms to an adult. The young adult remains in 
the vault until the skin becomes hard 
The first adults (Fig. 7) were observed in late June and 
were common during July and August. Only a very few 
adults were still alive in late September when our observa- 
tion ceased. After emerging the adults commence to feed 
and egg laying, according to our notes, begins in mid July. 
This species may be distinguished from our native east- 
ern Aphrophoras by its uniform yellowish color, with the 
prothorax, scutellum and elytra closely and uniformly punc- 
tate with small black punctures, each set with a fine golden 
yellow hair. Length, including wings, 10.5 to 11.0 mm. 
Vertex twice as broad as median length ; the anterior mar- 
gins forming a right angle ; median length one-half greater 
than length at eye ; median carina well elevated ; tylus more 
than twice as broad as long, uniformly punctate. Frons flat. 
Pronotum not elevated posteriorly ; punctate spots fine ante- 
riorly, coarser posteriorly ; median carina distinct. 
Genitalia: female, last ventral segment nearly twice as 
long as penultimate, convex, with the posterior margin 
roundly concave; ovipositor barely exceeding the pygofers. 
Male, eighth ventral segment twice as broad as long, anterior 
and posterior borders parallel; genital plates longer than 
broad at base; the ninth segment with lateral recurved 
hooks. 
General color yellowish brown without conspicuous mark- 
ings; numerous black punctures dorsally; the edge of the 
tylus bordered with black ; eyes dark brown ; tip of rostrum, 
claws and tibial and tarsal spines black; abdomen blackish, 
the segments bordered with brown and the genitalia brown. 
Known in the United States from Arnold Arboretum, Bos- 
ton, and from Mystic Lakes, Medford, Massachusetts. 
So far as observed there was no injury from the feeding 
of the nymphs or adults. The only injury was caused by 
the egg laying of the adults. These punctures are sometimes 
placed several inches from the tips of branches and the 
