480 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii5 



far west as Colorado and Saskatchewan. Ross (1944) provided the 

 only description of the larvae of this species. 



The larvae studied differ from the preceding species in having 

 the processes from the anterior margin of the frontoclypeus barely 

 developed (fig. 5,a), and in having longer mandibles that lack the 

 broad mesal teeth (fig. 5,6) . Those figured are from a recently molted 

 individual so that the tips are not worn; by the end of the instar 

 they will be considerably shorter. 



Material. — New York: Willseyville Cr., near Willseyville, Aug. 

 20, 1956, O. S. Flint, 2 larvae (OSF); Sept. 16, 1956, O. S. Flint, 

 1 larva (OSF). North Carolina: Green's Cr., near Highlands, May 

 18, 1959, O. S. Flint, 5 larvae (OSF). South Carolina: E. Fork 

 Chattooga R., Walhalla Federal Fish Hatchery, Oconee Co., June 6, 

 1961, O. S. Flint, many larvae, pupae (USNM). 



Genus Tinodes Stephens 



Figure 5,/ 



No larva of a Nearctic species of Tinodes has definitely been cor- 

 related with the adult. There are, however, two larvae in the collec- 

 tion of the USNM, probably from Utah, that seem safely referable 

 to this genus. They agree very closely with the larvae of Lype 

 (Flint, 1959) but differ by their greater size (12 mm.) and the con- 

 formation of the mandibles. The left mandible of Tinodes bears 

 a single linear hair brush rather than two as in Lype, both mandibles 

 are distinctly longer than broad, whereas in Lype they are equilateral 

 in outline, and the dentation on the inner margin is quite different 

 in the two genera. These larvae of Tinodes do not possess small teeth 

 on the ventral margin of the anal claw, as do the European species. 



Literature Cited 



Banks, Nathan 



1905. Descriptions of new Nearctic neuropteroid insects. Trans. Amer. 



Ent. Soc, vol. 32, pp. 1-20. 

 1930. New neuropteroid insects from the United States. Psyche, vol. 37, 

 pp. 223-233. 

 Edwards, Sidney W. 



1961. The immature stages of Xiphocentron niexico (Trichoptera) . Texas 

 Journ. Sci., vol. 13, pp. 51-56. 

 Flint, Oliver S. 



1959. The immature stages of Lype diversa (Banks) (Trichoptera: Psycho- 

 myiidae). Bull. Brooklyn Ent. Soc, vol. 54, pp. 44-47. 

 Hagen, Herman 



1861. Synopsis of the Neuroptera of North America. Smithsonian Misc. 

 Coll., vol. 4, art. 1, xx + 347 pp. 

 Milne, Marjery J. 



1938. The "metamorphotype method" in Trichoptera. Journ. New York 

 Ent. Soc, vol. 46, pp. 435-437. 



