INSECT NOTES FOR I9IO. I5 



nae are relatively shorter than in floccosa and galcaformis. They 

 are lo-jointed. Ill is the longest joint. IV to VIII are sub- 

 equal. IX and X together are about equal to VIII. A single 

 distal circular sensorium is borne by each of segments IV, VI, 

 VIII and IX. The 2 terminal stout spine-like setae of X are 

 imequal in length, one being about )4 the length of the other. 

 The antennal length is about 1.55 mm. 



Wings. In form and venation the wings of striata (fig. 14) 

 are the same general type as those of floccosa and galcaformis 

 except that in the striata wing the stigma is relatively much 

 wider and more strongly indicated. The wing length is about 

 2.65 mm. 



Genitalia. Male. The supra-genital plate is somewhat coni- 

 cal with the anal opening at the distal tip a little flared. This 

 plate is about evenly and thickly supplied with setae. The for- 

 ceps of the subgenital plate are also thickly setous, the setae 

 becoming shorter and more spine-like at the tip. The tip of 

 each branch of the forceps is armed with 2 strongly chitinized 

 claws. Fig. 15 gives a very good idea of these structures. 



Female. From the lateral aspect, well shown in Fig. 17, the 

 genital segment of the female shows the following characters. 

 The supra-genital plate is fusiform at the end. This fusiform 

 portion is without long setae and the margin is striated. A few 

 scattered setae are present along the dorsal line and numerous 

 stray blunt, very short setulae thickly stud the lateral surface 

 of the plate. A well defined circular area of circum-anal wax 

 glands is present at the cephalic portion of the plate. The sub- 

 genital plate is broader than in galcaformis and floccosa and the 

 tip is gently curved up. There are a few setae present chiefly 

 along the ventral line and the lateral surface of the plate is 

 thickly set with strong, setulae similar to but longer than those 

 of the upper plate. The lower plate is considerably shorter than 

 the upper. A little cephalad the tip of the lower plate the ovi- 

 positor takes a sudden bend dorsad and the tip of the ovipositor 

 touches the supragenital plate, but does not extend to the end of 

 the plate. 



The color notes are from living material and the structural 

 details are from balsam mounts. 



Cotypes collected from Bctiila, June, at Orono, Maine. (Lot 

 1228) 



