NORTH AMERICAN EUCOSMINAE. 97 



39. EUCOSMA SCINTILLANA (Clemens), 



(Fig. 248.)- 



Cullimosmia scintillana Clemens, Proc. Ent. Soc. Phila., vol. 5, 1865, p. 142. 

 Paedisca dodecana Zeller, Verh. Zool-bot. Ges. Wien, vol. 25, 1875, p. 311. 

 Paedisca circtilana Fernald (not Hiibner), Trans. Amer. Ent. Soc. Phila., vol. 



10, 1882, p. 36. 

 Eucosma circulana Feknald (not Hiibner), in Dyar List N. Amer. Lepid., no 

 5079, 1903. — Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 

 6901, 1917. 

 Eucosma dodeoana Barnes and McDunnough, Check List Lepid. Bor. Amer., 

 no. 6902, 1917. 



This is the species most commonly confused with oirculana Hiib- 

 ner, For many years it has been listed either as a synonym or variety 

 of the latter. Clemens description (with which his type agrees) 

 plainly shows that it is not that species but the one later described by 

 Zeller as dodecana. It is rather common and distributed throughout 

 tlie eastern and central United States and Canada to the Rocky 

 Mountains, 



Male genitalia figured from typical specimen in National Col- 

 lection taken in Iowa, 



Distribution according to specimens in National Collection, Ameri- 

 can Museum and collection Barnes: Manitoba, Texas (Dallas, 

 Piano), Oklahoma, Ohio, Kansas, South Dakota, Iowa, Illinois, 

 Pennsylvania, Virginia. 



Alar expanse. — 11-22 mm. 



Types. — In Academy of Natural Science Philadelphia {scintil- 

 lana) \ in Museum Comparative Zoology {dodecana). 



Type localities. — Unknown {scintillaina) ; Dallas, Texas {dode- 

 cana?). 



Food plant. — Unknown. 



40. EUCOSMA SCINTILLANA RANDANA Kearfott, 



(Fig. 253.) 



Eucosma randana Kearfott, Trans. Amer. Ent. Soc, vol. 33, 1907, p. 21. — 



Baenes and McDunnough Check List Lepid. Bor. Amer., no. 6903, 1917. 

 Eucosma paraglypta Meyrick, Ent. Mo. Mag., vol. 48, 1912, p. 34. 



This is the western race of scintillana Clemens, occuring in the 

 Rocky Mountain and arid regions to the Sierras. The typical form 

 seems distinct enough to warrant its original position as a separate 

 species but in the smaller specimens, pattern, and structure grade, 

 into the lighter colored specimens of the true scintillana. Normally 

 the latter species is much more heavily dusted with fuscous on wings 

 and thorax and the genitalia are smaller ; but with this as with many 

 another member of the genus (probably all the borers at least) spe- 

 cific characters even of genitalia which are normally so rigidly fixed 

 are here fluid and subject to variation. 



