Vol. 32, pp. 121-124 June 27, 1919 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW GENUS FOR TETTIGONIA TRIFASCIATA SAY. 

 (HOMOPTERA; EUPTERYGIDAE.) 



BY W. L. McATEE. 



Tettigonia trifasciata Say falls, according to the latest ar- 

 rangement 1 of the genera of the Eupterygidae in the genus 

 Erythroneura Fitch. However, it differs from other species of 

 that genus, and indeed from all members of the family, so far 

 as I am aware, in having the scutellum thickened and distinctly 

 elevated apically. Seen from the side the dorsal outline is 

 conspicuously interrupted by the prominent scutellum in this 

 species; in others it is smooth. This notable difference in 

 structure is accompanied by less important variations in vena- 

 tion, which in themselves make it undesirable to retain the 

 species in Erythroneura. The second apical vein is curved, 

 reaching margin at exterior angle of tegmen, and not infre- 

 quently it nearly or quite forms a stalk with first apical vein. 

 In typical Erythroneura, the second apical vein clearly reaches 

 the posterior margin of tegmen, and rarely, if ever, is united 

 in a stalk with first apical vein. 



For these reasons, therefore, and chiefly on account of the 

 nature of the scutellum, I propose for the reception of this 

 species, the genus: 



Hymetta, new genus. 



Type species: T. [ettigonia] trifasciata, Say, Thomas. Descriptions of 

 new Hemipterous insects collected in the Expedition to the Rocky Moun- 

 tains, performed by order of Mr. Calhoun, Secretary of War, under com- 

 mand of Major Long. Journ. Acad. Nat. Sci. Philadelphia, Vol. 4, 1825, pp. 

 344-345 [Missouri]. Complete writings, Vol. II, 1859, pp. 259-260. 



Both the fore and hind wings of this species are broader than those pos- 



iMcAtee, W. L., Proc. Biol. Soc. Wash., Vol. 31, pp. 109-123, Nov. 29, 1918. 

 22— Proc. Biol. Soc. Wash., Vol. 32, 1919. (121) 



