885 



Notes on the Entomology of Hawawiian I^Jiijiliorhla with the 



Description of a New Picli/opliorixh IjiIkix 



( I loinoph'i-n . [h'l plidciddc ). 



r.v .loiix «'()i,i;ri;x ukmdwkll. 



The c'luh iiiic llawaiiiiii species of Enpliorhhi foiMii a iiat- 

 ui'al liTdii]) of closely related species, either shriihs oi- small 

 trees, raiii2,iiii2,' from the arid reiiioiis of the coastal belt to smiK^ 

 of the rainy ridges more than two thousand feet in elevation, 

 most commonly gi'OAving on the dry ends of the lateral ridges 

 at the onter limit of native vegetation. They support a diver- 

 sitied insect faima which has as yet been very imperfectly 

 studied. Some l)eginning has been made upon this work on 

 Oahu but on the other islands the Eiipliorbia-inwuix is practi- 

 cally unknown. These notes refer to Oahu only. 



At least oiu' and ])i'obably two (ir tlu'ce species of Protrilii- 

 II IIS feed in the larval condition in the wood of recently dead 

 stems and on reaching maturity enu'rge and live for a time on 

 the foliage on E. liiUchrandi on the lateral ridge leading out to 

 the eastward from ^ft. Kaala in the Waianae range, on E. 

 chislarfolid on Kaumuohona ridge in the Koolau range, and on 

 E. iindfiformis on the Ewa ridge l)Ounding Kalihi valley in the 

 same range. 



Ml'. Swczey has found the F/ii/dfid moths (IcnoplHiidis lo- 

 doid and (I. Icahl. attacking the foliage of Enpliorhhi. the for- 

 mer in the mountains, the latter in the lowlands. 



A nnnd)er of ITeteroptera of the families Covchhic Lip/dri- 

 ddc. and Miridae have been taken on Euphorhhi but have not 

 yet been worked up systematically nor has their biology l)een 

 studied suthciently to be sure they are really attachecl to these 

 ])lants. One species of the CicadeUid. (Jassid) genus Xeso- 

 plirosiiiic has been taken attached to Enpliorhia liiUchrandi on 

 the Kaala ridge and another upon what is considered by ^Ir. 

 ( '. X. Forbes as a form of E. inidfifonnis growing on the Ewa 

 coral plain near Sisal, a few feet above sea level. The DcJ- 



Proc. Haw. Ent. Soc. Ill, Xo. 5, April, 1918. 



