f 



448 



Thorax liroad, arched, reticulately marked. Legs short and stout; 

 hind tibiae with three short spines at apex. Forewings short, rounded 

 at apex, hyaline, clear, veins black or reddish. Abdomen short. Male 

 forceps short, relatively broad, about half or three-fourths as long as 

 anal valve, narrowing to acute apex. Anal valve moderately broad, 

 anterior margin straight, posterior margin arcuately convex, broadest 

 below middle ; female genital segment nearly as long as abdomen, dorsal 

 valve longer than ventral, both acutely pointed. 



Distribution: — I.sland of Oahu — Alewa Heights, March 26, 

 191G; Waialae Eidge, April 22, 1917; Mt. Kaala at elevation 

 of 2000 to 2300 ft., March 4, 1917; Wailnpe, January 23, 

 1910; Xiu, Feb. 10, 1918 (Swezey), on ohia leliua ; in all, 

 there are 52 specimens, both sexes, collected l)v O. II. Swezey 

 and P. H. Timberlake on leaves of ohia lehua. Island of Molo- 

 kai — One female apparently of this species from Kamoku, 

 July 15, 1910 (I). T. Fullaway). 



Genus Hevaiieva Kirkaldy. 



Several good characters distinguish this from other genera 

 of the Triozinae. The forewings lack the three narrow, gran- 

 ular spots on the hind margin which are present, so far as I 

 know, in all other genera of the sul)family; the veins, as well 

 as body surface, are covered with long stiff hairs. The hind 

 tibiae have five to ten black spines at apex instead of the three 

 or four present in most other genera of the subfamily. Genal 

 cones are present, but variable in length and form. 



This genus is probably endemic here and probably a deriva- 

 tive of Trioza. The wing venation is suggestively similar in 

 these two genera here, and in the Trioza species the veins and 

 body surface have minute setae which have apparently been 

 highly developed in Ilevalwva. The marginal granular spots 

 are variable in size in our species of Trioza and slight indica- 

 tions of their presence in a few species of Hevaheva suggest 

 the possibility of the transition. 



