226 



ENTOMOLOGICAL NEWS. 



[May, '09 



Suborder TUBULIFERA Haliday. 



Family PHLOEOTHRIPIDAE Uzel. 



Genus TRICHOTHRIPS Uzel. 



Trichothrips tridentatus n. sp. (Fig. 6). 



Female. General color of body brown or light brown ; much red hy- 

 podermal pigmentation ; except on head and legs. Length of body 1.7 

 mm.; width of prothorax .24 mm.; width of mesothorax .31 mm.; width 

 of abdomen .38 mm.; length of antennal segments 16 ^, 47 tj., 56 p, 52 p. ) 



52 yu,, 48 fj., 37 /".. 26 /A. 



Head about as broad as long. Cheeks nearly parallel, slightly rough, 

 with several minute spines. Distinct postocular spines on each side. 

 Eyes small, continuous in outline with cheeks and vertex ; deep red with 

 yellow margins. Ocelli present, obscured by hypodermal pigmentation. 



Mouth cone long and pointed, extending 

 slightly beyond posterior edge of proster- 

 num ; maxillary palpi two-segmented, sec- 

 ond segment four or five times as long as 

 first ; labial palpi with four spines at tip. 

 Antennae twice as long as head. First seg- 

 ment cylindrical ; second barrel-shaped, 

 slightly narrower at base ; third to sixth urn- 

 shaped, distinctly stalked ; seventh slightly 

 stalked, forming broadly with the eighth, 

 which is roundly conical. Segments all con- 

 colorous with body, except second and the 

 base and top of the third, which are yellow- 

 ish ; the second may be clouded basally. 

 A row of six spines on eighth segment con- 

 tinuous with three more on distal part of 

 seventh. One or two simple sense cones on 

 the third to the seventh segments inclusive. 



Prothorax about as long, and (exclusive of fore coxae) 1.5 times as 

 wide, as head. Sides strongly divergent in front half ; nearly parallel, 

 slightly concave, in posterior half. One spine at each posterior angle. 

 Meso- and metathorax of nearly equal width. Wings present, reaching 

 to sixth or seventh segment of abdomen ; sides of fore-wing parallel, 

 strong fringe all around, double for about ten hairs just short of tip on 

 posterior margin ; colorless throughout. Legs without hypodermal pig- 

 mentation, otherwise concolorous with body, except that the tarsi are 

 light brown, and the tips of all femora are yellow beneath ; fore femora 

 slightly enlarged ; all tarsi with a small curved tooth ; fore coxae with 

 one prominent spine. 



Abdomen with sides nearly parallel to seventh segment, thence round- 

 ing off to base of tube. Spines distinct but not conspicuous. Tube slender 

 as compared with abdomen; length .14 mm.; breadth of middle .05 mm. 



Fig. 6. Trichothrips tridenta- 

 tus n. sp. Antenna beyond 

 second segment, and fore 

 tarsus of female. 



