234 
Psyche 
[December 
overhangs laterally and posteriorly and serves in this way to 
hold the wings more firmly in position. Most important of all, 
however, is the closely approximate condition of the hind coxae 
of Hercothrips — a type of structure which I have learned to 
associate with the jumping habit, but with what degree of ac- 
curacy I am not sure. 
Selenothrips is perhaps the closest relative of Hercothrips; 
but in it is found a fore wing with conspicuous, enlarged bristles 
on the costal margin and on the two longitudinal veins, many of 
them much longer than the width of the wing; a pronotum 
which instead of being reticulate is transverse^ striate; and an 
abdomen in which the distal segments are shortened. 
Hercothrips insularis sp. nov. 
Female ( macropterous ). — Length about 1.1 mm. Color 
nearly blackish brown, head and thorax not noticeably paler; coxae 
brown; fore and mid femora yellow, shaded with brown at 
middle, hind femora yellow at base and blackish brown beyond: 
tibiae yellow at either end, brown between, hind pair darkest; 
tarsi lemon yellow; fore wings brown at base (excepting costal 
margin and end of scale), with a narrow nearly white band just 
before the fork in the principal vein, nearly uniform brown beyond, 
very slightly paler toward tip of wing, ambient vein in distal eighth 
of wing and all veins in third eighth, dark blackish brown; antennae 
with segments 1, 2, and 6-8 blackish brown, 1 paler; 3-5 pale 
yellowish, indistinctly darkened apically. Head broadest across 
eyes, 1 . 25 times as wide as long, cheeks nearly straight, curving 
slightly to eyes and to base; dorsal surface reticulate (though not 
deeply) with faint indication of occipital line, roughened within 
the reticules; frontal costa nearly as wide as first antennal seg- 
ment. Eyes about 0 . 6 as wide as their interval , of normal struc- 
ture. Ocelli of normal form and position. Antennae normal, 
segments formed almost exactly as in phaseoli 2 Prothorax with 
reticulation much like that of head. Metascutellum distinctly 
reticulate except at sides. Fore wings with bristles and veins as 
2 See Psyche, Vol. XIX, PI. 8, fig. b; 1912. 
