400 PROCEEDINGS OF THE NATIONAL MUSEUM tol. lie 



except the frontal eye patches, which may be greatly reduced. The 

 smaller denticle on the mandibles often is not evident. 



The subspecies C. vanduzeei eburnea Scullen is similar in structure 

 and color pattern to C. vanduzeei vanduzeei Banks except that the 

 markings of the former are white while those of the latter are yellow. 



Types. — The type female, from North Powder, Union Co., Oreg., 

 July 24, 1938, Solidago (H. A. Scullen), is deposited with the U.S. 

 National Museum, no. 66160. Paratypes are as follows: 



British Columbia: 9, Vernon, July 18, 1947 (Hugh B. Leech). California: 

 9 , Turlock, Stanislaus Co., June 3, 1955 (P. D. Hurd). Idaho: 2 9 9, Acequia, 

 Minidoka Co., June 30, 1957 (W. F. Barr) ; 9 , Bliss, Gooding Co., July 23, 1955 

 (J. E. Gillaspy) ; 9 , 2 mi. W. Gardens, Boise Co., July 3, 1956 (W. F. Barr) ; 

 9 , Glenns Ferry, July 8, 1927; 9 , Hagerman, July 1, 1930; 4 9 9, Hot Springs, 

 Owyhee Co., July 4, 1951, July 12, 1952, July 5, 1956 (W. F. Barr) ; 9 , Kiler, 

 Sept. 7, 1923 (Carl D. Duncan); 29 9, Melba, Canyon Co., July 10, 18, 1957 

 (H. W. Homan); 9, Mountain Home, 3138 ft., Sept. 1, 1952 (W. F. Barr); 

 9 , 12 mi. NW. Regina, Ada Co., July 11, 1952 (W. F. Barr). Oregon: 29 9, 

 5 mi. NW. Adrian, Malheur Co., June 25, 1958 (R. K. Eppley) ; 9 , Alvoid Desert, 

 Andrews, Harney Co., 4200 ft., July 4, 1927 (H. A. Scullen) ; 3 9 9 , 36 mi. E. 

 Baker, Baker Co., 2450 ft., July 31, 1929 (H, A. Scullen) ; 9 , Blitzen Valley, 

 Harney Co., July 16, 1936 (S. Jewett, Jr.); 3 9 9 , 3 mi. S. Elgin, Union Co., 

 Aug. 18, 1937 (Bolinger and Jewett); 69 9, Grants Pass, Josephine Co., Aug. 

 7, 1950 (H. A. Scullen) ; 9 , Herford, Baker Co., 3650 ft., July 21, 1940 (H. A. 

 Scullen) ,9,12 mi. W. Huntington, Baker Co., 2225 ft., July 22, 1936 (H. A. 

 Scullen) ; 3 9 9 , 4 mi. E. Juntura, Malheur Co., 1440 ft., July 14, 1940 (H. A. 

 Scullen); 29 9, Klamath Falls (Algoma), Klamath Co., Aug. 23, 1958 (Joe 

 Schuh); 9, North Powder, Baker Co., July 24, 1938 (H. A. Scullen); 49 9, 

 Ontario, Malheur Co., July 16, 1940, Solidago sp. (H. A. Scullen) ; 6 9 9 , Powder 

 River, 26 mi. E. Baker, 3000 ft., Aug. 9, 1937 (Bolinger and Jewett) ; 9 , Prairie 

 City, Grant Co., 3250 ft., Aug. 12, 1929 (H. A. Scullen) ; 9 , Rowena, Wasco Co., 

 July 15, 1923 (Carl D. Duncan); 9, Umatilla, Umatilla Co., July 14, 1931 (J. 

 Nottingham); 9, Unity, Baker Co., 5800 ft., July 21, 1940 (H. A. Scullen); 

 9, Wilderville, Josephine Co., Aug. 4, 1949 (H. A. Scullen). Utah: 9, Forest 

 Grove, Aug. 8, 1949 (G. F. Knowlton). Washington: 39 9, Stratford, Grant 

 Co., July 4, 1920 (R. C. Shannon). 



Distribution. — Pacific Northwest. 



Prey record. — None. 



Plant record. — Achillea sp. (Idaho, Oregon), Chrysothamnus sp. 

 (Idaho), Cleomella sp. (Idaho), Daucus carota (Idaho, Oregon), 

 Eriogonum sp. (Idaho), Eriogonum elatum (Oregon), Helianthus sp. 

 (Idaho), Melilotus sp. (Idaho), Solidago sp. (Oregon). 



Group II 



This group is distmguished by the following characters: (1) There 

 is no prominent elevation on the surface of the medial lobe of the 

 clypeus; however, two small papilliform structures are just above the 

 clypeal border. (2) The second abdommal segment is much broader 

 than the first, especially noticeable on the female. (3) The meso- 



