NORTH AMERICAN LASPEYRESIINAE AND OLETHREUTINAE 179 



15. OLETHREUTES CESPITANA (HUbner) 



(Figs. 245, 434) 



Tortrix cespitana Huener, Samm. Eur. Schmet. Tort., 1814, figs. 244-245. 

 Rhyacionia flavofasciana Westwood and Humphreys, vol. 2, 1844, p. 173, 



pi. 99, fig. 16. 

 Sericoris instrutana Clemens, Proc. Ent. Soc. Philadelphia, vol. 5, 1865, 



p. 135. 

 Sericoris poana Zeller, Yerh. Zool.-bot. Ges. Wien, 1875, p. 282. 

 Eucosma cespitana Meyrick, Hand Book Brit. Lepid., 1895, p. 468. 

 Olethreutes cespitana Staxjdingek and Rebel, Cat. Lepid., vol. 2, no. 1927, 



1901. 

 Olethreutes instrutana Fernald, in Dyar List N. Amer. Lepid., no. 5064, 



1903. — Forbes, Memoir 68, Cornell Univ. Agr. Exp. Sta., 1924, p. 453. 

 Olethreutes flavofasciana Kearfott, Ent. News, vol. 20, 1909, p. 53 ; Ins. 



New Jersey, 1910. p. 539. 

 Argyroploce instrutana Barnes and McDunnough, Check List Lepid. 



Bor. Amer., no. 6862, 1917. 

 Celype cespitana Pierce and Metcalf, Genitalia Brit. Tort., 1922, p. 52, 



pi. 17. 



There are no differences in pattern or genitalia b tween the Euro- 

 pean cespitana and the American instrutana and I have no doubt 

 that they are but one species. Our American specimens vary con- 

 siderably in size. In Colorado and western California there is a 

 large variety measuring from IT to 20 mm. alar expanse. Speci- 

 mens of this have been identified — and I now think incorrectly — as 

 punctk'ostana Walker. I am not differentiating it as a race because 

 there are many Colorado specimens intergrading in size between it 

 and the smaller eastern form. Colorado specimens range all the 

 way from 12 to 20 mm. expanse; typical eastern specimens from 11 

 to 16 mm. The genitalia of all are alike, not varying in the 

 slightest degree. 



Male and female genitalia figured from specimens in National 

 Collection from Clear Creek, Colo. (Oslar, male), and Washington, 

 D. C. (Busck, female). 



Bursa of female witli signum a weak scobinate patch. 



Distribution. — North Carolina, District of Columbia, Pennsyl- 

 vania, New Jersey, New York, New Hampshire, Massachusetts, 

 Ohio, Kentucky, Tennessee, Iowa, Nebraska, Missouri, Wisconsin, 

 South Dakota, Colorado, Utah, California, Washington, British 

 Columbia, Alberta, Manitoba, Ontario. 



Alar expanse. — 11-20 mm. 



Types. — Location unknown {cespitana and -flavofasciana) ; Acad- 

 emy Natural Science, Philadelphia {instrutana) ; British Museum 

 {poana). 



