March, 1903.1 DyAK : LaKV.1-: OK NoKTH AMERICAN CL'LICID.+:. 23 



-^ Fig. 19. Scotogramma infuscata, $ , harpe and clasper. 



Fig. 20. " discolor, $ , harpe and clasper. 



^ Fig. 21. " pho(a, $ , harpe and clasper. 



ILLUSTRATIONS OF THE LARVAE OF NORTH 

 AMERICAN CULICIDiE. — III. 



By Harrison G. Dyak, Ph.D. 



The species figured herewith are largely the result of Professor 

 John B. Smith's investigations on mosquitoes in New Jersey, of which 

 he has given a preliminary account (Ent. News, XIII, 299-303, 1902). 

 Professor Smith has handed me certain species obtained by his corre- 

 spondents which I had not .seen, and he requested two of them, Mr. 

 H. Brehme and Mr. J. Turner Brakeley, to send living material. Mr. 

 Brakeley especially responded most cordially and not only sent inter- 

 esting material, but in collecting it, found a si)ecies new to New Jersey 

 and previously unknown to Professor Smith, namely Culex melanurus. 

 The jar sent by Mr. Brehme from the salt marshes of the Elizabet'h 

 River contained a mixture of Culex sollicitans, C. tczniorhynchiis, C. 

 sylvestris and C- iiii::;ritiilus. The latter larva was a surprise, coming 

 close to territans which has hitherto stood alone. 

 Culex taeniorhynchus Wiedemann. 



Larvaj bred by Professor Smith with sollicitans " from eggs in the 

 same piece of sod " (Ent. News, XIII, 300), sent by Mr. Brehme as 

 noted above and given me by Mr. Kotinsky from a culture at the 

 Insectary of the Department of Agriculture which had been obtained 

 at St. Georges Island, Md., by Mr. B. Eftyhithes. The larva differs 

 from sollicitans by the shorter tube and differently shaped teeth of the 

 lateral comb (PI. II, Fig. i, />), and comes nearest to Stegotnyia 

 fasciata, from which it differs in the comb (PI. II, Fig. 2, comb of 

 fasciata ) . 



Larva. — (PI. II, Fig. i.) Head rounded pentagonal, flattened, 

 normal, brown; antennce moderate, uniform, slender, infuscated out- 

 wardly, paler at base, the tuft reduced to one hair, short, before the 

 middle ; mouth brush normal, well developed ; dentate labial triangle 

 low and broad, regularly and evenly toothed. Body normal, hairs 

 moderate, diminishing posteriorly ; air tube very short, not much 



