120 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



Pupa (pi. 36, fig. 282, and pi. 39, fig. 322). — Granulosity on entire 

 thorax; 6 rather heavy, simple trichomes on either side of midline of 

 thorax. Dorsal surface of abdominal segments : Without granulosity ; 

 spines on segments 2-4 are anteriorly directed, those on segments 6-9 

 are posteriorly directed ; segment 2 with 8 simple spines in transverse 

 row three- fourths the distance from the anterior margin, the row di- 

 vided by a median separation ; anterior to the outermost spine at each 

 end of the row are 2 very fine spines ; segments 3 and 4 each with 8 

 simple spines in transverse row somewhat before the posterior margin, 

 with median space ; transverse rows on segments 6-9 are situated be- 

 hind the anterior margin and all have a median separation ; segment 

 6 with 6 spines, segment 7 with 12 spines, and segments 8 and 9 with 

 18 spines. Ventral surface of abdominal segments : No granulosity ; 

 all spines are anteriorly directed and the rows are situated somewhat 

 before the posterior margin of the respective segment ; segment 4 with 

 a single simple spine on either side of the midline ; segment 5 with 4 

 bifid spines in transverse row, with median separation ; segments 6 

 and 7 with 4 spines in transverse row, with median separation, the 

 outer spines simple, the inner ones bifid ; distance between the two 

 spines on either side of midline greater than that on segment 5. Ter- 

 minal spines very small. 



Respiratory apparatus (pi. 36, fig. 282) of each side arising a little 

 behind the anterior margin of thorax ; composed of 4 very long fila- 

 ments that branch close to the base as follows : 2-2 ; filaments showing 

 superficial segmentation and microscopic spicules. Maximum length, 

 4.6 mm., about equal to the length of cocoon ; average diameter, 70 n.. 



Cocoon (pi. 39, fig. 322): Length of base, 4.7 mm.; maximum 

 width, 1.9 mm.; maximum height, 2.1 mm. Cocoon of wall-pocket 

 type, without collar; case with parchmentlike texture, the threads 

 well marked ; rim around anterior aperture thickened. Cocoon covers 

 abdomen and three- fourths of thorax ; attached along the posterior 

 half of its base. 



Larva (pi. 40, fig. 362, and pi. 42, fig. 399). — Total length, 6.5-7.0 

 mm. Length of head capsule i.i times its width. Width of thorax 

 1.4 times that of head. Width of first 4 abdominal segments equal to 

 width of head ; segments 5-7 expanded, greatest at segment 6 which 

 is 1.6 times width of segments 1-4; shape of body about the same as 

 in the subgenus SimuUmn. General color light brown; dorsum of 

 thorax often gray, especially in younger larvae ; venter of all segments 

 with gray markings; ventrolateral patches usually not present on 

 segments 6 and 7. 



Head: Designs on frons-clypeus and epicranial plates shown on 

 plate 40, figure 362. Each cephalic fan with 37-50 nonpectinate 



