30 THE FLORIDA ENTOMOLOGIST 
Prothorax considerably longer than the head, twice as wide as long, sides 
arched and strongly diverging posteriorly; dorsal surface transversely 
striated; two or three short, curved spines at each anterior angle; and a 
heavy, dark but short one at each posterior angle directed backward. Legs 
brown except the tarsi, distal ends of the hind and mid tibiae and the entire | 
fore tibiae which are brownish yellow; surface marked with diagonal stri- 
ations. 
Mesothorax wider than either the prothorax or the metathorax; anterior 
portion of dorsal surface transversely striated, middle longitudinally -stri- 
ated. Wings considerably longer than the abdomen, membrane brown, cov- 
ered with minute hairs, abruptly widened at the base, costal margin sparse- 
ly fringed with long hairs and bearing about 28 stout bristles, fore vein 
bearing about 14 and hind vein about 19. 
Abdomen oval in outline, last segment markedly narrow and elongated, 
tubular. Bristles very short, those of the last two segments longer but still 
unusually short. 
Male. Considerably smaller. Body length 0.50 mm. Head 0.047 mm. 
long and 0.14 mm. wide; prothorax, length 0.095 mm., breadth 0.18 mm.; 
mesothorax, greatest width 0.2 mm.; abdomen 0.14 mm. Antennae, seg- 
ment 1,10; 2; 28; 3, 50; 4, 36; 5, 30:6, 27; 7, 125 8°14:09) 1 microns: 
Striations on the head and prothorax are less marked. Abdomen very 
small, scarcely twice as long as wide. Wings much exceeding the abdomen. 
Described from a singe female and a single male collected from Bass- 
wood (Tilia americanna) at Gainesville, Fla., May. 
This species is very close to Heterothrips vitis Hood but is smaller, lacks 
any suggestion of orange on the third antennal segment which is much 
shorter as is also the prothorax, and the forth antennal segment is also 
yellow. Type in the author’s collection. 
Printing for All Purposes 
Carefully Executed 
Delivered on Time 
Pepper Printing Company 
Gainesville, Florida 
WANTED—To buy or exchange for northern species, southern 
Chrysopidae (Lace-winged-flies). All stages desired, especially 
material for biological studies. Will determine specimens. Dr. 
Roger C. Smith, U. S. Ent. Lab., Charlottesville, Va. 
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