62 U.S. NATIONAL MUSEUM BULLETIN 2 79 



Description of Third Stage Larva 

 Figures 23, 25, and 49 



Cranium fuscous to black, with about 30 to 40 setae near each 

 antenna. Pronounced concavity mediad of eyespot. Concavity about 

 same size as eyespot, with single seta. Anterior border of concavity 

 declivous; posterior border vertical. Each anterior angle of frons with 

 about 10 to 15 setae. Epipharynx with about 30 to 40 long setae near 

 anterior border on each side of corypha. Right side of haptomerum 

 often more heavily sclerotized. Usually with small group of phobae 

 on each side mediad of fused phobal mass and distad of torma; 

 group on right usually more pronounced. Paria usually with more 

 than 60 setae on each side. Setae not readily separated into anterior 

 and posterior groups. Sense cone of haptolachus with group of pig- 

 mented phobae at anterior end. Glossa with 4 sensory spots and about 

 24 to 30 setae dorsally, dorsal setae intergrading with ventral setae. 

 Hypopharynx with smaller distal area bearing group of caudally 

 directed phobae at base between lateral, oblique rows of phobae. 

 Maxilla with galea bearing 5 to 8 fine setae on dorsal aspect in addition 

 to whorl of 5 setae at base of terminal uncus. Stipes with about 8 to 

 11 setae on exterior border. Maxillary stridulatory area with about 

 33 to 60 stridulatory teeth. 



Prothorax with about 80 to 100 setae on lateral lobe. Infraepisternal 

 area with about 1 to 4 setae; infraepimeral area with about 10 to 14 

 setae. 



Mesothorax with about 55 to 75 setae on lateral lobe. Infraepisternal 

 area with to 2 setae; infraepimeral area with about 31 setae. 



Metathorax with transverse row of about 7 setae and 7 spinules on 

 smaller dorsal lobe (DL2). Anterior lateral lobe (LLl) with about 

 20 to 25 setae. Posterior lateral lobe (LL2) with about 40 to 70 setae. 

 Infraepisternal area usually without setae; infraepimeral area with 

 about 35 setae. 



Legs with each tibiotarsus with an average of about 23 setae in 

 addition to terminal whorl of 6 setae. 



Abdomen with about 4 small spinules and numerous short and long 

 setae on DLl of segment 7. 



