514 



procellaris (Kirk.) but I have not seen the aedeagus of this 



species. 



Ilbumia blackbumi (Muir). 



A series of both sexes and young on Clennontia coerulea 

 Hbd., Kona, Hawaii {Timherlake, August, 1919). A long 

 series of both sexes and young from 29 miles, Olaa. Hawaii, 

 feeding on Urera sandzuicensis Wedd. (Giffard. August. 1918). 

 One macropterous male from Crater Road, Kilauea, and one 

 macropterous female from 23 miles, Olaa, Hawaii {Giffard, 

 September, 1919). 



Ilbiimia waikamoiensis (Muir). Fig. 2. 



A series of both sexes and young on a species of Cyanea, 

 Haleakala, near Puu-o-luau, Maui, elevation 5800 feet ( Timber- 

 lake, July, 1919). The former figure of the aedeagus of this 

 species * is reversed. It is slightly concave ventrally ; the spines 

 on the right side are small and form a row near the ventral 

 aspect, those on the left are larger and towards the apex run 

 on to the dorsal surface. 



Ilbumia boehmeriae sp. n. Fig. 12. a. 



Tn general build and coloration this species is similar to I. pipturi 

 (Kirk.), but there is a difference in the genitalia which is visible 

 externally. The genital styles are much narrower in the middle and 

 the inner apical corner considerably produced ; the aedeagus is more 

 curved on the apical third, the basal projection is much smaller and 

 narrower at base and the spines on the right side fewer and form 

 a line; the anal spines are stouter. 



Length of male 2 mm.; tegmen 1.2 mm.; female 2 mm.; tegmen 

 1.3 mm. 



Makaleha Valley, Oahu, on Boehmeria sp. (Sweaey, August, 

 1919). Described from five males, one female, and one young, 

 the latter being uniformly yellow. 



This is a case of a different food plant being associated 

 with a small but distinct difference of the genitalia while the 

 external body characters and coloration is apparently the same. 



Proc. Haw. Ent. Soc. IV. 1. (1919) p. 105. Fi^ 



