30 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



TRICHOTHRIPS FUSCUS, new species. 



Figs. 55-57. 



Female. — Measurements, length 1.75 mm.; head, length 0.33, 

 width 0.25 ; prothorax, length 0.21 , width 0.4 through coxae ; mesotho- 

 rax at front angles of same width as the prothorax, slightly broader at 

 juncture with metathorax. Metathorax posteriorly of same ^^ddth 

 as prothorax. Width of abdomen 0.5 mm.; tube, length 0.18, width 

 at base 0.09, at the tip one-half as wide as at the base. General color, 

 dark brown. Relative lengths of segments of antennae: 



1 1 1 A ^ A 1 A 



10 17 22 21 17 17 14 9 



General color of antennae very dark brown. 



Head broadly rounded in front, the rounding beginning just back 

 of eyes; broadest just behind the eyes, converging slightly to articu- 

 lation with prothorax. Cheeks mth a few small spines. Whole 

 dorsum of head finely transversely striated. Post ocular spines 

 stout and prominent, blunt. Other spines upon head minute. Eyes 

 large, occupying about three-fifths of width of head, very dark pur- 

 plish, almost black by transmitted light, light yellow by reflected 

 light, finely facetted. Ocelli larger than facets of eyes, with orange 

 pigmentation, well separated, the posterior ones on a line with center 

 of eyes and near their margins, the anterior ocellus is on the tip of the 

 raised and produced front, and is directed forward. Mouth cone 

 about as long as broad, the labrum triangular and sharp at the tip; 

 the labium broadly rounded and overreaching the labrum, reaching 

 nearl}" across the prosternvim. Antennae inserted below the front, 

 the basal segments separated by about half their wddth. Color of 

 an tennal segments : One, dark brown; two, dark brown, except the tip, 

 which is lighter brown; three, yellow; four and five, yellow, very 

 slightly infuscate at the sides near the tips; six, yellow in basal half, 

 infuscate in apical half; seven, dark brown, except basal fourth, which 

 is yellowish; eight, dark brown. Segments 4 to 6 each bear near the 

 tip two short transparent sense cones, one on the outer margin and one 

 on the inner. Segment three on the outer side near the tip bears a 

 single sense cone. Segments bear numerous light brown spines. 



Prothorax trapezoidal, only about four-sevenths as broad on 

 anterior margin as through coxae, slightly lighter brown than head. 

 One short spine at each posterior angle and one shorter one on each 

 coxa, a short spine on each anterior angle and two similar ones on 

 anterior margin somewhat nearer the meson than to the angles. All 

 these spines are only very slightly dilated. Posterior marginals 

 and midlaterals wanting. Dorsum faintly transversely striate, and 



