NO. 1310. NORTH AMERICAN THYSANOPTERA— HINDS. 129 



have an elongated, narrow, membranous sense area on under side of 

 outer half; live bears a small, rounded spot of similar texture near 

 tip below. 



Prothorax somewhat wider than long, and a little wider than head, 

 nearly rectangular in shape; sides but slightly arched, without con- 

 spicuous spines but with immerous minute ones. Mesothorax smoothly 

 rounded at front angles. Metathorax slightly narrower at front end 

 than mesothorax and tapering somewhat posteriori} . Wings always 

 present, about one-seventh as broad as long, rounded at tips; fore 

 wing heavily veined having a ring vein and two longitudinal veins 

 which extend from the base and join the ring vein just before the tip 

 of the wing; fore vein united to costa by two cross veins at one-third 

 and two-thirds its length; longitudinal veins united by one cross vein 

 just before the middle and the hind vein is joined to the hind ring vein 

 opposite the outer front cross vein; hind wing veinless. No fringe 

 upon costa of either wing, but costa and longitudinal veins set with a 

 number of short, dark spines; hind fringe hairs short and straight, 

 double row on fore wing. Fore wings with three white bands (at base, 

 middle, and tip) and wider dark brown cross bands between these; 

 hind wings with similar areas, but the two darker bands are so pale 

 gray that they are hardly noticablc. Legs gray-brown, dark brown 

 in dark specimens, very long and slender; fore femora slightl}^ 

 thickened and tarsi armed with a peculiar, hook-like structure opposed 

 to a stout tooth something like a forefinger and thumb (Plate I, fig. 9); 

 first segment of all tarsi very short; all legs thickly set with short 

 spines; all tibifB armed with very stout spines at tips. 



Abdomen about two-thirds the length of the whole bod}", small at 

 base, enlarging to the middle; segments frequently overlapping con- 

 siderably in the last half; last three segments long and tapering to tip; 

 ovipositor very long and up-curved; spines upon last two segments 

 long, dark, and conspicuous. Entire body yellowish brown to dark 

 brown; connective tissue red. 



Redescribed from seven specimens. No males found. 



Food 2)1 (mts.—AAioM'a.^ buckwheat, celery, clover, Compositaj, oats, 

 onion, tansy, wheat, various grasses and weeds. 



Ilahitat. — England (Haiiday), Vienna (Heeger), Finland (Renter), 

 Germany (Jordan, Bohls, near Berlin, Uzel), United States: Connecti- 

 cut, Indiana, Iowa, Massachusetts, Michigan, New Mexico, New York, 

 Ohio. 



Larva. — "Larva j^ellow, the abdomen behind deeper orange, a whorl 

 of hairs on each segment, more conspicuous on the last two; prothorax 

 elongate; antennae shorter than in the perfect insect, the number of 

 joints similar; mouth nearly perpendicular, not inflected under the 

 breast; joints of maxillary palpi not \Qvy unequal." — Haiiday. 



Life histor}" unknown. Fitch observed that it was abundant on 

 Proc. N. M. vol. xxvi— 02 9 



