1936] New Thysanoptera from the United States 
5 
mm., at middle 0.027 mm.; abdomen, greatest width 0.204 
mm. 
Antennal segments: 12345678 
Length (p) : 20 30 34 31 27 33 8 15 
Width (|x) : 22 23 17 17 17 17 7 5 
Total length of antenna 0.198 mm. 
Described from 9 females taken by the author on a species 
of Blueberry ( Vaccinium sp .) , at Canandaigua Lake, New 
York, May 27, 29, and 30, 1934 [Hood Nos. 567 and 568]. 
The assignment of this species to the heterogeneous col- 
lection of forms now reposing in Tseniothrips does not thor- 
oughly satisfy me ; yet I dislike to erect a new genus for it 
until a thorough study has been made of its relatives. The 
number of segments in the maxillary palpus cannot be de- 
termined with certainty from my material, though I strong- 
ly suspect that there are but two instead of the conventional 
three. 
It is certainly a most distinct species. The small size, pale 
color, minute frontal notch, short abdominal setae, and the 
absence of a comb from the eighth abdominal tergum are all 
important characters in its recognition ; but the presence of 
only two minor setae on the posterior margin of the pro- 
notum, instead of the usual six or eight, is distinctive. 
Eurythrips sculpturus sp. nov. (Fig. 2) 
Few die (brachypterous) . — Length about 1.4 mm. Color 
of head, thorax, and legs bright yellow, all somewhat shaded 
with brown at sides, pterothorax darkened along anterior 
margin ; abdomen brown, terga III-VIII each with the sub- 
basal line darker and with a dark gray quadrate blotch oc- 
cupying the basal half of the median fourth beyond the line, 
the tube blackish brown and much darker than rest of ab- 
domen ; pigmentation in fat-body maroon red, present in the 
ocellar region, in sides of head at base, sparingly in pro- 
thorax, and abundantly along sides of pterothorax and ab- 
domen and in abdominal segment II, entirely wanting in 
tube and all appendages; antennse about concolorous with 
head in segment I, II darker, especially at sides, III yellow, 
shaded with gray in expanded portion, especially at sides, 
