WINTER NUMBER 59 
sharp, destitute of conspicuous bristles. Pronotum with anastomozing 
striae and about 12 pairs of small bristles. ; 
Sides of mesothorax very convex, of metathorax only slightly so and di- 
verging posteriorly. 
Fore legs short and much thickened. 
Wings very long (length ten times the greatest width), much exceeding 
the tip of the abdomen, curved, shaded with gray, fore pair deeply so 
but with a clear area just above the base, sparsely fringed with long 
irs for its entire length. Posterior veins of iore wings branch off from 
the anterior at the apex of the clear area (about a fifth of the length) 
bearing but two spines, one near the middle and another towards apex. 
Anterior vein with four spines, two near the base and two near apex. 
Abdomen short and thick. Segment 10 split open above. Segment 9 
also narrow. Spines on segments 8 to 10 moderately long. Receptaculum 
seminis over base of ovipositor bright reddish orange. 
Male unknown. 
Described from a single female taken in Dixie County, Florida, from 
grass and roots at margin of a cypress pond, by T. H. Hubbell, Nov. 28, 
1925. Type in the author’s collection. 
Close to #. obesus Hinds, but differs in the shorter head, the more an- 
terior position of the ocelli, the longer antennae, the less compressed first 
antennal segment, the shorter projection on the second segment, the di- 
verging sides of the metathorax, the wings with a complete fringe of hairs 
and fewer bristles on the veins, and the absence of a long spine on the 
posterior angle of the prothorax. From C. spinceps Hood it differs in size, 
the fewer spines on the front of the head, the longer prothorax and the 
shape of the fore tibiae. 
KEY TO NORTH AMERICAN SPECIES OF CHIROTHRIPS 
1, -A) single longitudinal vein in each fore wing...-.....-.,..<--<.--.2:- mexicanus. 
2. Two longitudinal veins in each fore wing; fore wings brown. 
a. Two long, stout spines at each posterior angle of the prothorax. 
b. Antennal segment 6 about as long as 4 and 5 together. 
—insolitus. 
bb. Segment 6 shorter than 4 and 5 together.................... manicatus. 
aa. A single long, stout spine at each posterior angle..........spiniceps. 
aaa. Spines at the posterior angles of the prothorax only moderately 
long. 
b. Body uniformly brown. 
ce. Only one moderately heavy bristle on each posterior angle 
of prothorax; antennal segment 5 nearly as thick as 4. - 
—floridensis. 
ec. Two shorter bristles on each posterior angle of prothorax, 
antennal segment 5 much smaller than 4. 
—floridensis catchingsi. 
