106 



American Midland Naturalist Monograph No. 3 



multiple, sparsely barbed, about as long as antenna; lower (B), and upper 

 (C) stout, spine-like, darkly pigmented, barbed, as long or longer than anten- 

 na; postclypeal (d) double, hair-like, about as long as lower (B) and upper 

 (C) ; sutural (e) single; trans-sutural (f ) multiple; supraorbital, single. Pro- 

 thoracic dorsal submedian hair group consisting of two long stout barbed hairs 

 reaching to or near upper head hairs (C) and a short, 8 to 10-branched tuft 

 of fine smooth hairs less than half as long as the stout ones. Upper lateral 

 hairs of abdominal segments I and II, triple; lower, single. Comb of eighth 

 segment consisting of a row of 7 to 10 scales on the distal margin of a large 

 transverse sclerotized plate; individual scale thorn-shaped with minute lateral 

 spinules on basal half. Siphon about four to five times as long as basal width, 

 slightly upcurved; pecten of numerous evenly spaced teeth not reaching middle 



Prothorocic dorsal 

 submedian hairs 



Fig. 54. Larva of Uranotaenia sapphirina (Osten Sacken). A, Comb 

 scale. B, Terminal segments. C, Head. D, Pecten tooth. 



