1918] Weiss and Dickerson—Notes on Trioza Alacris 63 
Antenne arising in front of eyes, apparently five jointed, length, 
four-fifths the width of the head; two basal segments covered by 
dorsal expansion of head. Antenne transversely ridged; apical 
segment slightly club shaped, tapering to point and bearing two 
spines at tip and one on lateral margin. Legs three jointed; basal 
segment broadest, sides convex especially outer surface; second 
segment slightly longer than basal segment, sides parallel. Apical 
segment one-third length of second, slightly narrower; outer 
surface broadly rounded to inner forming tip terminated by a pair 
of hooks. Second and third segments bear a few scattered hairs. 
Basal sheath of rostrum extending to just beyond bases of first pair 
of legs. 
Adult: Trioza alacris Flor, syn. Trioza lauri Targ. The follow- 
ing description is by Crawford (Bull. 85, U. S. N. M.). The 
original description by G. Flor appeared in “Zur Kenntniss der 
Rhynchoten Beschreibung neuer Arten der Familie Psyllodea 
Burm., Moskau, 1861.” ‘Length of body 1.9 mm., length of fore- 
wing 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 brown; antennz 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 line, 
with a prominent sulcate impression on each side of median line 
and parallel to it; genal cones scarcely two-thirds as long as vertex, 
divergent, subacute, pubescent, not much depressed from plane of 
vertex. Antennz about one and one-third times width of head, 
slender. Thorax not broad, well arched, punctate; pronotum 
moderately long, not strongly depressed; preescutum rather large. 
Legs slender; hind tibize 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 sides), terminating in a subacute, black point 
at apex. 
*“Female—Genital segment nearly as long as rest of abdomen, 
acute at apex, valves subsequal in length.”’ 
