NORTH AMERICAN SAWFLY LARVAE — MIDDLETON. 



29 



a few short, stout hairs ; eye disks not elevated, eyes slightly convex ; 

 antennae composed of 4 separate disks (not concentric) no cone (fig. 

 8'') ; maxilla with larger palpifer and 4-jointed palpus, basal 2 joints 

 of palpi not distinctly separated, lacinia neither especially broad nor 

 flattened and armed an apical surface with few (6) setae in row (fig. 

 8^) ; labium with palpiger and 2-jointed palpus. Thorax: The ter- 

 gum composed of areas A, B, C, and D (D infolded) ; prothorax B 

 and C with hairs; mesothorax and metathorax A, B, and C haired; 

 alar area absent in the prothorax and medium sized, undivided, not 

 especially prominent on mesothorax and metathorax; the pleurum 

 with preepipleurite not very distinctly separated from B on the pro- 

 thorax and from the alar area on the mesothorax and metathorax; 

 postepipleurite small; prehypopleurite small, lobe-like rather than 

 flat surfaced, with 

 few hairs ; posthy- 

 popleurite rather 

 large, with several 

 hairs; legs sparsely 

 haired with 4 joints, 

 a claw and a small 

 pad or fleshy protu- 

 berance basad o f 

 claw and on pos- 

 terior interior side 

 of leg. Abdomen: 

 The tergum, com- 

 posed of A, B, C, and 

 D (D infolded) ; 

 A, B, and C with hairs, on urites 1 to 9 (fig. 8°), and urite 10 com- 

 posed of epiproct, which is moderately haired and possesses no 

 pseudocerci; spiracular area small and indistinct, situated in alar 

 region and with spiracle small on urites 1 to 8; spiracular area and 

 spiracle wanting on urites 9 and 10; alar area neither prominent, 

 large nor bilobed on urites 2 to 8 ; alar area less developed and smaller 

 on urite 1, indistinct on urite 9, and wanting on urite 10; the pleurum 

 with the epipleurite divided into small preepipleurite and small post- 

 epipleurite on urite 1, into small preepipleurite and larger post- 

 epipleurite with prominent crescent-shaped area on urites 2 to 4 and 8 

 (fig. 8^=), urites 5-T similar to preceding but without crescent-shaped 

 area, urite 9 with epipleurite undivided and urite 10 with epipleurite 

 not distinguishable ; uropods from an indistinct hypopleurite on urites 

 2 to 7, no uropods and hypopleurite indistinct on urites 1, 8, and 9, 

 and postpedes present, hypopleurite wanting and the postcallus small, 

 not prominent and but moderately haired on urite 10. 



. ACOED0LECERA FOVEATA 



b, ANTENNA ; C, THIRD DRITB. 



Maxilla ; 



