Pomona College Joitbnal of Entomology 



723 



imbricated. Article I dusky olive green, but ligliter tii;iii the iie.uIJI light yellow, 

 often slightly dusky, III .uiil IV light yellow throughout, V yellow with dusky 

 ti)), VI dusky throughout. The lengths of the Jirticles nrc as follows: I, 0.05 

 mm.; II, O.O") inni. ; III. ().:)() nini. ; IV, 0.!2.'5 mm.; V, O.l.'i mm.; VI, QAlr) mm. 

 (spur 0..'J7.') mm.); total L.'iiri mm. Articles I and II .are eo-cqual, III is nearly 

 as long as I \' and V together, but shorter tli.an VI, IV is much longir tlian V, the 

 si)ur of \'I is ne.irly four times as long as the article and is longer than article 

 III. The lengths of the .irtieles v.iry considerably as the drawings of the article 

 III show in the cut, but the comparative lengths are fairly constant. Article III 

 bears from three to nine rather large circular sensoria, V and VI bear tlie usual 



Figure 231. Eichochaitophorus populifolii Essig 



number. Rostritm — Reaches just beyond the second co.xa?, transparently white 

 with red or brownish tip. Prothorax — C'oncolorous with the head, and very little 

 wider. Meso- and Mctathorax — Dull olive green with lobes well developed and 

 black, shiny. Abdomen — Fl.at, hairy, yellowish with dull or light green dorsal 

 markings as follows: Large green transverse irregular band just beliind the 

 thorax ; irregular green transverse band near middle of abdomen, this band curves 

 deeply toward the cauda in the middle; two green blotches just back of the cor- 

 nicles, the bases of which blend into a tran.sverse green band which extends across 

 the dorsum ; a green transverse band near the caudal end. Tip of abdomen light 

 yellow. These markings may vary, but there is always a large yellow blotch 

 just behind the first green band, yellow areas around the bases of the cornicles, 



