NO. 2008. NEW UPEGTES OF THYSANOPTERA— MORGAN. 15 



segment at the tip bears a long hair which is slightly longer than the 

 segment. A short, blunt, transparent sense cone is borne on the 

 outside near the tip of segments three, five, and six. 



Prothorax about 0.12 mm. in length and 0.21 in width, broadest 

 across the middle, straight on the anterior margin, sHghtly convex on 

 the posterior margin, hind angles bluntly rounded, yellowish brown 

 tinged with red hypodermal pigmentation. Each hind angle bears 

 a slender blunt spine, and a spine of similar size stands about two- 

 fifths the distance from the spine at the angle to the meson. A 

 smaller spine stands near the latter spine. Other spines on the pro- 

 thorax small and inconspicuous. Surface of prothorax reticulated. 

 Mesothorax about 0.28 mm. wide, its front angles broadly rounded, 

 each bearing a shoulder-Hke process. Mesonotal plate broad and 

 long bearing a transverse row of four spines half-way between front 

 margin and lateral angles. 



Mesonotal plate transversely areolate. Metanotal plate with a 

 spine on each side the meson near the front margin, reticulated. 

 Metanotal plate and sides of meso- and metathorax brown and with- 

 out red hypodermal pigmentation. Sides of meso- and metathorax 

 reticulate and areolate. Wings long and slender, attaining the tip of 

 the abdomen, broadened at the base, at the middle only about one- 

 eighteenth as broad as long, margins nearly straight except at the 

 tip, basal fifth gray, and sometimes a broad band across middle of 

 wings grayish, tip of wings gray usually, remainder of wings brown, 

 darkest toward the base. Veins inconspicuous, the two longitudinal 

 veins anastamose at first seventh of the wing and soon fade out. All 

 spines on wings long, stout, and knobbed. Costa bears 15 to 19; 

 fore vein 13 to 14; scale 2 interior of scale 1. Fringe present on 

 both margins of both wings; the basal fifth on front margin and a 

 shorter distance at the base of hind margin being without fringe. 

 Fringe long and slender, that on both margins of fore wing being 

 wavy, while only the posterior fringe of the hind wing is wavy. Hind 

 wing with a very dark brown median longitudinal vein. Legs rather 

 long and slender, tibiae unarmed except for a rather weak pair of 

 spines at the tip of the hind tibia within. All femora brown except 

 bases of middle femora and sometimes the bases of fore femora 

 which are gray. Basal half of middle and hind tibiae and basal 

 fourth of fore tibiae light yellowish, as are also the tarsi. A black 

 spot at the tip of the tarsi within. Legs clothed with a few small 

 spines. 



Abdomen broadening to the fourth segment which is about 0.3 

 mm. wide, thence tapering gradually to the tenth segment, which is 

 cylindrical. Sides of abdomen reticulate. Across the middle of the 

 dorsum of each segment two to eight stands a row of 8 to 10 small 



