272 PROCEEDINGS OF THE NATIONAL MUSEUM Vou. 113 
Brotocy: The following records of host plants were taken from the 
material examined: ‘‘Bred Helenium head” and “on Helenvum sp.,”’ 
Mineral wells, Tex., June 9 (USNM); ‘‘on Helenium sp. flowers,’’ New 
Boston, Tex., April 30 (USNM); “Helenium tenuifolium,” DeRidder, 
La., July 6 Mansfield, La., July 4, Fierson, La., Sept. 9, Longansport 
La., July 5 (USNM); ‘‘on Helenium sp.,”’ Natchez, Miss., June 16 
(USNM); ‘on Helenium tenuifolium flowers,’ Wilmington, N.C. 
(USNM); “on Helenium tenuifolium,” July 11 (B. D. Valentine) ; 
“on Coreopsis,” Okmulgee, Okla., June 23 (USNM); “on Aphanost- 
[ephus] skirrob.” and ‘“‘on Gaillardia pulchella,”’ Calvert, Tex., May 18 
(USNM); ‘‘on Anthemis arvensis,” Hope, Ark., Sept. 11 (USNM); 
“Monarda citriodora,” Brownsville, Tex., March 23 (USNM); “Bred 
Parosela aurea head,” Wichita Falls, May 11 (USNM); “on Croton 
capitatus,’”’ Texarkana, Ark., Sept. 10 (USNM); “Bred Croton capitat. 
seed,” Johnson’s Bayu, La. (USNM); “on cotton,” Mercedes, Tex., 
Apr. 15 (USNM); “‘cotton,’’ Brownsville, Tex., Mar. 23 (USNM); 
“alfalfa,” Brownsville, Tex., Mar. 23 (USNM). 
Discussion: This species resembles S. discoideus in general body 
shape, coloration, and prothoracic punctation but has no posterolateral 
spots on the elytra, the discal maculation of the elytra is less distinct 
than in S. discoideus, and the tibiae are reddish as opposed to black in 
the latter species. There are also some minor differences in the 
genitalia of the two species (compare figs. 73 and 74, 121 and 122). 
Distrripution: Present records indicate that this species may be 
found in the southern portion of the interior plains and along the Gulf 
and Atlantic coastal plains. The following specimens were examined: 
ALABAMA: CALHOUN Co.: Oxford, July 11 (B. D. Valentine). DALLAS Co.: 
Selma (USNM). JEFFERSON co.: Birmingham, July 13 (USNM). MOBILE Co.: 
Citronelle (CAS). 
ARKANSAS: CLAY Co.: Knobel, Aug.6 (USNM). HEMpsTeAD co.: Fulton, Sept. 
12 (USNM); Hope, Sept. 11 (USNM). mruier co.: Texarkana, Sept. 10 (USNM). 
PULASKI Co.: Little Rock (USNM). 
FLORIDA: BAKER Co.: May 1 (ELS). oscroua co.: Kissimmee (AMNBH). 
“Swain,” Aug. 12 (CU). 
GEORGIA: GRADY CO.: Beachton, July 18 (USNM). 
Kansas: TREGO co.: No data (USNM). 
LOUISIANA: BEAUREGARD PARISH: De Ridder, July 6 (USNM). pDEsoTo 
PARISH: Fierson, Sept. 9 (USNM); Mansfield, July 4 (USNM); Logansport, July 
5 (USNM). Mapison PARISH: Tallulah, July 23 and 25 (USNM). 
MaRYLAND: BALTIMORE CO.: Sparrows Point, July 4 (CAS). 
MIsSsISSIPPI: ADAMS Co.: Natchez, June 16 (USNM). GEORGE co.: Lucedale, 
Aug. 28, Sept. (CU). uHiNps co.: Utica (USNM). 
Norru CAROLINA: NEW HANOVER Co.: Wilmington, Aug. 28 (USNM). 
OKLAHOMA: ATOKA co.: Atoka (USNM); Atoka, June 13-15 (AMNH, CAS, 
USNM). sryan co.: Calera, Dec. 12 (USNM). cHeROKEE co.: Tahlequah, 
June 17 (CU). 
