OF NORTH AMERICA. l4f> 



EOMBYCIDJB. 



CERATOCAMPIN^. 



Genus. EULEUCOPHHUS. Packard. 



"This is a singular genus close!}' allied to Heimkuca, especially 

 the section represented by H. Juno, with which the present genus may 

 be compared. The body, including the antennas, is large, while the 

 wings are much smaller than usual. The antennae are large, broadly 

 pectinated to the tip, just as in Hanileuca, and the body is of the same 

 size and structure as in H. Jtmo. The forewings are much as in 

 Z^ /««(?, but proportionately smaller, the costa being slightly sinuate, 

 incurved in the middle, the apex being much rounded just as in 

 H. Juno, and the outer and inner edges having also the same propor- 

 tions. The hind wings are much shorter and rounder than in Hemil- 

 euca, the tip of the abdomen projecting (slightly) beyond them ; the 

 apex is much more rounded. The venation differs in the second 

 median venule arising from within the middle of the wing, especially 

 in the hind wings ; in H. Juno it arises outside the middle of the 

 wing. The style of coloration is quite different, there being no discal 

 spot on the hind wings, which are pale whitish yellow (testaceous. ) 



The generic name is given in allusion to the pale gray color so 

 unusual in this sub-family." 



Packard, Ann. Rep. Peab. Acad. Sci. April, 1872. 



This genus includes but one species, E. tricolor from New Mexico. 

 Mr. Packard was not acquainted with the ? of the species described 

 by him, and was consequently not aware of the great disparity in size 

 between the sexes, which in addition to the difference in coloralion 

 might almost lead to the sup[)Osition that they were two distinct 

 species. 



l-EULEUCOPHaiUS TRICOLOR, (Pi. 6 fig., 3 3 ? 4. ) 



EuleucophcBus tricolor, Packard, Rep. Peab. Acad. Sci. April, 1872. 



$, . — Head, thorax beneath and abdomen above dark Indian red ; 

 prothorax patagia and thorax very hairy, grayish brown, with scattered 

 yellowish hairs. Abdomen beneath, brown, banded with pale ochre. 



