378 
ments 3—5 clavate; 6—8 fusiform; segments 1, 2, 7, 8, apical half of 6, and 
apical fourth of 5, dark blackish brown; remainder of antenna 1Jemon- 
yellow, excepting apex of 4, which is 
clouded with brown. Mouth cone about 
as long as its width at base, broadly 
rounded; tip of labrum just attaining tip 
of labium. 
Prothorax almost as long as width 
of head, and (including coxe) slightly 
more than twice as wide as long; surface 
finely reticulate; usual spines all present, 
the two pairs near the posterior angles 
somewhat longer than the others. Ptero- 
thorax sub-rectangular, about two-thirds 
as long aswide, and slightly broader than 
prothorax; anterior corners projecting 
slightly beyond the lateral margins. 
Wings represented by small pads, which 
are about equal in length to the head, 
and four times as long as broad. All 
tibiz and tarsi bright yellow, the former 
often clouded with brown at base; re- 
mainder of legs concolorous with body: 
anterior tarsi unarmed. 
Abdomen broad, about one and one 
half times as wide as pterothorax, widest 
at segment 4, from which it tapers evenly 
to tube, giving the abdomen a lanceolate form. Tube almost as long as 
head, tapering evenly to middle, and then some what more abruptly to 
apex; surface not spinose. 
Measurements:—Total length 2.82-3 .34 mm.; head, length .53 
mm., width .25 mm.; prothorax, length .21 mm., width (including 
coxe).46mm.; pterothorax, width .48 mm.; abdomen, width .74 mm.; 
tube, length .47 mm., width at base .114mm., at apex .052 mm. Ant- 
enna: 1.48 45.25 70 4; 3, 140 ws 4. Orie vor 1129 (092-7 romenee 
oO fe etOtalys an 2 tna. 
Male.—Smaller than female (total length 2.58-—2.97 mm.). An- 
terior femora no stouter than in female; fore tibize provided with a stout 
tooth. Abdomen slender, tapering evenly from almost the very base. 
Fic. 9 
Idolothrips flavipes, female, head and pro- 
thorax. ~ 10), lets, clei) 
Described from several males and females, all from Illinois, as 
follows: Dubois, Apr. 28 (C. A. Hart and L. M. Smith); Homer, 
Mar..30; Apr. iy (CA: Hart, J. 1: H:); ON. Mey a AS Boltenaaeeul 
specimens were taken among fallen oak leaves. 
