60 MISCELLANEOUS PAPERS. 



Abdomen long- and .slender; segments 3 to 8 with a brown line near 

 anterior margin; spines on last segments not noticeably long. 

 Descrlhed frovi twenty-live females. 



Food plant: Figs. Specimens taken from the inside of ripe tigs. 

 Habitat: Santa Clara Valley, California. 



Family PHLffiOTHRIPID^. 

 8. Genus TRICHOTHRIPS UzeL 



(20) Trichothrips dens, new species. (PI. V, tigs. 40-43.) 



Mea.mreiitiitts: Head, length 0.26 mm., width 0.25 mm.; prothorax, 

 length 0.1.5 mm., width 0.31 mm.; mesothorax, width 0.36 mm., abdo- 

 men, width ().1:0 mm. ; tid^e, length O.IT mm. ; total body, length 1.5 mm. 

 Antenna': 1, 30yw; 2, OOyw; 3, 90yu; 1, 7SyW 5, 51yu; (i, 54/*; 7, 48/<; 8, 24/<; 

 total, 0.44 mm. Color brown, with conspicuous red pigment blotches 

 on body and legs. 



ILdd about as long as wide, broadl}' rounded in front; frons ele- 

 vated only slightly between basal segments of antennae. Cheeks 

 arched, converging posteriorly; with edges roughened; bearing a few 

 short, stout spines which are raised on small tubercles. Ked pigment 

 on head is conspicuous. A pair of short, inconspicuous, postocular 

 spines are present. Kiji^x large, with small facets, black b}^ transmitted 

 light, with light inner borders and light lemon-yellow, transparent 

 outer borders; not pilose. Ocelli present, subapproximate, margined 

 inwardh^ with dark crescents, anterior one on apex of head. Moutli 

 cone pointed, reaching beyond posterior margin of prothorax. Antennse 

 eight-segmented, one and two-thirds times as long as head; })rown, 

 unicolorous with body, except that the base and tip of segment 3 and 

 bases of segments 4 and 5 shade to light brown or lemon-yellow. 

 -Segment 1 truncate; 2 constricted at base into a broad stalk and fitting 

 ball-and-socket-like into a depression in segment 1; 3 to <> inclusive 

 each with a slender stalk at base, each also somewhat constricted at the 

 distal end; T cylindrical-ovate and very closely and evenly united witli 

 8, which is conical. A dark spot on segment 2 is pro))ably a sense 

 area; segments 3 to 6 inclusive each with three simple sense cones, 

 with one cone on segments 5 and 6 rudimentary; 7 and 8 bear each a 

 simple sense cone and a fringe of eight or nine sense hairs on their 

 inner margin. 



Prothorax 2\)OvX half as long as head l)ut wider than head is long. It 

 bears no hairs other than a single, stout, transparent, knobbed pair on 

 the hind angles and a similar smaller pair on the anterior angles. Mexo- 

 tliorax and metathorax about equal in width and slightly wider than pro- 

 thorax; with sides almost parallel; they bear no conspicuous spines or 

 hairs. Each /*wv coxa, projects considerably beyond margin at sides of 

 prothorax and forms what appears to be the prominent angle; each 

 bears a short, stout, transparent, knoljbed hair on promine-nt angle. 



