1925 ] 
New N eotropical Thysanoptera 
49 
intermediate brown area somewhat paler at middle; hind wings 
light gray with two pale bands corresponding in position with 
those on fore wings. Maxillary palpi sei;en-segmented, the basal 
segment large; labial palpi five-segmented, the basal segment 
short. Fore wings somewhat expanded apically, broadest at 
apical sixth, where they are about 1.6 times as wide as at basal 
fourth. 
Trinidad and St. Thomas; C. B. Williams; taken by sweep- 
ing. 
The seven-segmented maxillary palpi, the dark brown 
fourth antennal segment and the narrower fore wings distinguish 
this species at once from S. flavus Hood, the type of the genus, 
to which it bears a close superficial resemblance. 
Frankliniella parvula sp. nov. 
Female (macropterous). — Length about 1.1 mm. Color 
light brown, apex of abdomen darkest; femora usually brown, 
much paler at apex, tibiae and tarsi pale yellowish gray; antennae 
with segments 1, 2 and 4 7 8 brown, 2 darkest, 3 light yellowish 
gray, 4 and 5 paler basally; wings pale brownish, narrowly 
lighter along median line; ocellar pigment dull orange. Head 
about 1.33 times as wide as long. Segment 2 of antennae slightly 
thickened on dorsum at apex and bearing 2 rather prominent 
dark bristles; length of antennal segments in microns: 1, 24; 2, 
36; 3, 75; 4, 51; 5, 39; 6, 53; 7, 10; 8, 17. 
Male (macropterous). — Pale yellow, with a gray-brown 
blotch at middle of abdominal tergites 2-8; wings almost clear; 
antennae nearly white, segments 4 and 5 tipped with gray, 6-8 
gray. 
Trinidad, Grenada, Panama, and Costa Rica; C. B. Wil- 
liams; on cacao, in various flowers, etc. 
Easily recognized by the long third antennal segment. The 
prolongation of the second segment can be seen to advantage 
only when viewed from the side. 
