l68 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



genital fork unite on horizontal plane. Ovipositor (pi. 30, fig. 167) 

 well developed, lance-shaped, ending in a distinct point. 



Pupa (pi. 37, fig. 292, and pi. 39, fig. 332). — Entire thorax with 

 granulosity; on each side of midline there are 3 simple trichomes. 

 Dorsal surface of abdominal segments : Granulosity on posterior half 

 of segment i and on anterior half of segment 2 ; second segment with 

 6 anteriorly directed simple spines in a transverse row about three- 

 fourths the distance back from anterior margin, the row being divided 

 into two by a median space ; segments 3 and 4 with similar rows, each 

 composed of 8 spines. Ventral surface of abdominal segments : Fifth 

 segment with 4 anteriorly directed spines in transverse row, just 

 anterior to posterior margin of segment, the spines divided into two 

 equal groups by a median space ; segments 6 and 7 with similar rows 

 of spines, but the two spines on each side of median space are more 

 separated than on segment 5 so that the distance between them is 

 approximately equal to that of median space. Terminal spines absent. 



Respiratory apparatus (pi. 37, fig. 292) of each side emerging just 

 behind the anterior margin of thorax, composed of 8 tubular filaments, 

 arranged in groups of 2-1-1-2-1-1 ; the branching is so close to the 

 base that all filaments appear to emerge individually. Maximum 

 length of filaments, 3.0 mm., about 0.54 times as long as cocoon; 

 average diameter, 70 ju, ; filaments with microscopic spicules. 



Cocoon (pi. 39, fig. 332) : Length of base, 4.5 mm. ; greatest length, 

 5.6 mm. ; greatest width, 2.2 mm. ; height, without festoons, 2.1 mm. ; 

 with festoons, 2.6 mm. Cocoon slipper-shaped, with distinct collar 

 and fine parchmentlike texture, threads not visible ; lateral margins 

 not extended to form "wings." Extending from the rim around the 

 anterior aperture are several ribbonlike festoons, those of each side 

 being united ; the number of festoons varies somewhat, but there are 

 usually 4-5, the two most dorsal ones emerging very close to one 

 another. Cocoon covering abdomen and one-half of thorax. 



Larva (pi. 40, fig. 371, and pi. 42, fig. 408). — Total length, 9.6- 

 ii.o mm. Length of head capsule 1.3 times its width. Width of thorax 

 and of first 4 abdominal segments only slightly wider than head. 

 Abdominal segments 5-7 expanded, segment 7 about i^ times width 

 of segment i. In general, there appears to be a progressive widening 

 from anterior to posterior end. In profile, the dorsum of the larva is 

 straight, while on the ventral surface the posterior segments, starting 

 with the sixth and ending at posterior sucker, slope dorsal at a distinct 

 angle. General color, smoky gray with greenish hue on dorsum of 

 abdominal segments and on ventral surface of thoracic and first two 

 abdominal segments. 



