419 



"The tubercular setae are reduced in number as compared with those of 

 the hirval stage; two white hairs arise from botli tubercles I and II, tubercle 

 III shows a single hair; tubercles IV and V appear to have become separated, 

 both being situated on the lateral flange, the former with two, the latter with 

 two or three smaller hairs. The number of dorsal hairs is increased on the 

 two posterior abdominal segments and on the thoracic ones tubercle III shows 

 the usual two setae. There is on the prothorax a posterior row of eight setae 

 crossing the segment, a single lateral hair and a fringe of hairs across the apex." 



36. OiDAEMATOPHORus ELLiOTTii Femalcl. PI. XLV, fig. 5. 

 ■fLioptilus homodactyhis Hy. Edwards, Bull. 35 U. S. N. M. 137, 1889 (in part). 

 Alucita elliottii Femald, Can. Ent. XXV, 95, 1893. 

 Pterophorus elliottii Femald, Pter. N. A. 42, pi. VIII, f. 1, 2, 1898. 



Dyar, Psyche VIII, 250, 1898, (biol.). 



Fernald, Bull. 52 U. S. N. M. 445, 1902. 



Forbes, Psyche XVI, 136, 1909. 



Meyrick, Gen. Ins. C, 16, 1910. 



Winn, List Ins. Que. 86, 1912. 



Meyrick, Wagner's Lep. Cat. pars 17, 24, 1913. 



McDunnough, Can. Ent. LII, 90, pi. II, f. 3, 1920 (biol.). 



Britton, Ins. Conn. 103, 1920. 

 tPterophorus ctliotti Barnes & McDunnough, Check List 151, 1917. 



Head brown, white between antennae. Antennae white. Palpi small, 

 slender, appressed, touched with brown on outer side. Legs white, fore and 

 mid femora and tibiae brown inside ; first joint of mid and hind tarsi and 

 hind tibiae at bases of spurs usually touched with brown. Spurs with a brown 

 line on one side, rather long. Mid tibiae with moderately developed median 

 and terminal tufts. Thorax white. Abdomen white with dorsal, ventral and 

 broken ventro-lateral stripes, the dorsal line never heavy and sometimes lacking. 

 Primaries snowy white with scattered grayish brown scales, most numer- 

 ous in costal region and below cell. Costa with a dash just beyond base of 

 cleft, usually powdery and sometimes scarcely traceable or absent. This mark 

 is continued obliquely inward, becoming faint but usually connected with a 

 rounded spot some distance before base of cleft. Cell with a dot near middle 

 in some specimens. Costa of first lobe with two blackish dots in the more 

 heavily marked specimens, and apex, inner margin before apex, and tips of 

 veins of second lobe with similar dots. Our most heavily powdered specimen 

 has a brown subcostal line in the first lobe which extends slightly basad along 

 costal margin of cell. Fringes pale gray brown with white bases, white in cleft. 

 Secondaries white, sometimes tinged with gray; fringes gray tipped. Expanse 

 21-26 mm. 



Distribution: Que. to Man., south into N. J. and 111. Late June 

 and July. 



The numerous superficial features in which elliottii differs from 

 homodactyhis are so variable that they do not sufiice to separate some 



