82 Bulletin of the Brooklyn Entomological Society Vol. XVI 



14 (15) Total body length about 1.7 mm. ; fore tarsi with a small 



acute tooth ; wings light gray brown, spotted with darker. 



T. americanus Hood ('08). 



15 (14) Tarsi with a large tooth. 



16 (17) Last two antennal segments completely united; eyes very 



small; body length about 1.5 mm. 



T. anomocerus Hood ('12). 



17 (16) Last two antennal segments not compactly united; eyes 



normal; body length 1.8 mm. or more. 



18 (19) Tarsal tooth straight. 



T. marginalis Hood & Williams ('15). 



19 (18) Tarsal tooth curved. 



20 (21) Body length 2.8 mm. ; head dark brown. . T. drakei n. sp. 



21 (20) Length 1.9 mm.; head yellowish. 



T. terminaUs Hood & Williams ('15). 



22 (11) Tarsi unarmed. 



23 (24) Color ochraceous yellow T. zonatus Hood ('14). 



24 (23) Color blackish brown. 



25 (26) Antennal segments 2-5 subequal, 7 shorter than 8. 



T. fuscicornis Hood ('16). 



26 (25) Segment 3 elongated, 7 and 8 subequal. . . T. salicis n. sp. 



References. 



Hinds, W. E., '02. Contributions to a Monograph of the Insects 

 of the Order Thysanoptera inhabiting North America. — 

 Proc. U. S. Nat. Mus., 25. 



Hood, J. D., '08. New Genera and Species of Illinois Thysan- 

 optera. — Bui. II State Lab. Nat. Hist., Vol. 8, Art. 2, pp. 

 361-378. 



Hood, J. D., '09. Ent. News, Vol. XX, p. 32. 



Hood, J. D., '08. Can. Entomologist, Vol. XL, p. 305. 



Hood, J. D., '12. Can. Ent., Vol. XLIV, p. 137. 



Hood, J. D., '14. Proc. Biol. Soc. Wash., Vol. XXVII, pp. 151- 

 172. 



Hood, J. D., '15. Entomologist, Vol. XLVIII, No. 624, p. 106. 



Hood, J. D., '16. Proc. Biol. Soc. Wash., XXIX, p. 109. 



Hood, J. D., and Williams, C. B., '15. New Thysanoptera from 

 Florida and Louisiana. — ^Jour. N. Y. Ent. Soc, Vol. XXIII, 

 No. 2, pp. 121-138. 



Morgan, A. C, '13. New Genera and Species of Thysanoptera 

 with Notes on Distribution and Food Plants. — Proc. U. S. 

 Nat. Mus., Vol 46. 



