34 U.S. NATIONAL MUSEUM BULLETIN 244 



Distribution. — (Map 2.) A common species in the eastern part 

 of its range, S. walshella extends as far west as the Till Plains of 

 Illinois, south to the Northern Embayed Section of Virginia, and 

 north to the St. Lawrence Valley Section of southeastern Canada. 



Discussion. — As mentioned earlier (see p. 8), the insect presently 

 recognized as Solenobia walshella is possibly a European introduction 

 into North America. The specific name of our common Solenobia, 

 therefore, eventually may fall into synonymy. Sauter (1956) stated 

 the possibility that *S'. walshella and the bisexual form of the wide- 

 spread European species S. triquetrella Hiibner were identical. An 

 examination of the foretibia, however, is sufficient to separate the 

 males of these two species: in S. walshella the foretibia of the male 

 possesses an epiphysis that is lacking in S. triquetrella. 



A few authorities have supposed for several years that more than 

 one species, or more than one race of the same species, of Solenobia are 

 present in North America. Sauter (1956) mentioned a partheno- 

 genetic race oV'S. walshella" from Montreal, Canada, that, according 

 to him, differed in no morphological way from S. triquetrella. 



The taxonomy of ^S*. ivalshella probably is much more complicated 

 than is presented here. Considerable more study, emphasizing 

 genetics as well as life history, will have to be made in order properly 

 to evaluate this complex. 



Material examined. — 140 cf cf, 18 99, 39 cases: 



CANADA: Quebec: Old Chelsea, cf with case, May 5, CNC; 2 d" d" with 

 cases, May 5-24; 9, May 8, CM. Ontario: Ottawa East, d^ with case, April 6, 

 CNC. 



UNITED STATES: Delaware: Rehoboth, 4 cases, USNM. Watertown, 12 

 cfd', March 6-April 25, USNM. Wilmington, 2 d' d', March 2-5, USNM; 

 6 cases, USNM. District of Columbia: Washington, d', April; 2 d' d" with 

 cases, March 24; d", April 20, USNM. Illinois: Decatur, 14 d'd', March 16- 

 April23, USNM. Putnam Co., d', April 30, USNM. Maine: Augusta, 4 9 9 

 with cases, May 1; 3 9 9 with cases, April 15, USNM. Bar Harbor, 2 99 

 with cases, May 19, USNM. Maryland: Wheaton, d", April 8, USNM. Massa- 

 chusetts: Beverly, 3 cases, USNM. Fitchburg, 9 with case. May 1, USNM. 

 Jamaica Pond, d" with case. May 12, USNM. Melrose Highlands, d', May 11, 

 USNM. New Jersey: Elizabeth, 5 d" d', Sept. 4-21; 9, Sept. 14, CM. Essex 

 Co., d", May 8, USNM. Princeton, 2 d" d", Aug., CM. Watchung Mts., 7 d" d' 

 with 4 cases, March 30-April 13, USNM. New York: Aurora, d", June 4, CU. 

 Ithaca, 2 d" d", May 5-20, CU. Lockport, d" with case, April 17, CU. McLean, 

 d'. May 21, CU. Mecklenburg, 9 with case, May, DRD, Scarsdale, 6 d" d*, 

 April 21-May 3, USNM. Ohio: Cincinnati, 4 d" d", April 2-24, ANS. Penn- 

 sylvania: Ambridge, d", May 22, CM. Finleyville, 2 d" d", May 1-7, CM. 

 Longwood, d", April 1, USNM; 2 cases, USNM. New Brighton, d', May 5, 

 USNM. Oak Station, 21 d' d", April 19-May 5; 5 99, April 19-May 10, CM; 

 10 d" d', April 19, USNM; 5 d' d", April 25-May 3, AMNH. Pittsburgh, 8 d" d", 

 April 22-May 6, CM; 3 <^ c^, April 12-22, AMNH; 5 d^ d^, April 29-May 11, 

 USNM. Roxboro, 6 d" d", April 25-May 5, ANS. Sharpsburg, 5 d' d', April 

 15-May 22, CM. Virginia: Peninsular, case, USNM. 



