REVISION OF GENUS EUCERCERIS CRESSON ; 49 



Paratypes. — New Mexico: cfi Eddy County, June 21, 1940 (M. Price); 

 8? 9, lOcTcf, 31 mi. NE., Las Cruces, Otero County, 4,000 ft. elev., Sept. 9, 

 1962, at Sartwellia mexicana (H. A. Scullen); cf> 35 mi. NE. Las Cruces, Otero 

 County, 3,900 ft. elev., Aug. 21, 1962, at Eriogonum rotunditolium (H. A. Scullen); 

 3? 9, 4cf cT, same locality, Sept. 9, 1962, at Sartwellia mexicana and Lepidium 

 sp. (H. A. Scullen); cf ; 7.5 mi. S. Three Rivers, Otero County, Sept. 9, 1961, at 

 Gutierrezia micrecephala (P. D. Hurd) ; 6? 9, 58crcf, White Sands Monument 

 Area, Otero County, 4,000 ft., elev., Sept. 9, 1962, at Sartwellia mexicana (H. A, 

 Scullen) Texas: 5 9 9, 38cf cf, 12 mi. W. Alpine, Brewster County, 5..000 ft., 

 elev., Sept. 3, 1962, at Eriogonum annum (H. A. Scullen); 9» 7 mi. NE. Marfa, 

 Presidio County, 4,800 ft. elev., Sept. 2, 1962, at Croton corymbulosus (H. A. 

 Scullen); 2 9 9 , 40? cf , 8 mi. E. Marfa, Presidio County, 4,650 ft. elev., Sept. 

 2, 3, 7, 1962, at Eriogonum annum and Sartwellia mexicana (H. A. Scullen) ; 

 4 cf cf, 15 mi. E. Van Horn, Brewster County, Sept. 28; 1957, at Gutierrezia 

 sarothrae (Nutting and Werner). 



Distribution. — Central New Mexico and western Texas, 3,900 

 to 5,000 ft. elev. 



Prey record. — None. 



Plant record. — Croton corymbulosus (Texas). Eriogonum annum 

 (Texas). Eriogonum roiundijolium (New Mexico). Gutierrezia micro- 

 cephala (New Mexico). G. sarothrae (Texas). Sartwellia mexicana 

 (New Mexico, Texas). 



24b. Eucerceris morula morula, new species 



Figures 30, 82 a, b, c, d, e, f 



Female. — Length 10 mm. Black with creamy white markings; 

 punctation average; pubescence very short and inconspicuous. 



Head about one sixth wider than the thorax; black except large 

 eye patches, large patches on the lateral lobes and the medial lobe 

 of the clypeus, an elongate patch on the frons, an elongate patch 

 back of the eye, all of which are creamy white; clypeal border divided 

 into an upper and a lower portion on the medial lobe, single denticles 

 are located at the fusion of the medial lobe with each lateral lobe, 

 a pair of denticles is at the meson of the upper portion of the border 

 between which there is a group of 2 to 4 long bristles, a bilobed 

 extension appears mesad on the lower portion of the border; the 

 surface of the medial clypeal lobe is only slightly convex; mandibles 

 black with a large acute denticle having a broad base, below and more 

 basad there is a small denticle (visible only when specimen is viewed 

 from a certain angle) ; antennae black and normal in form. 



Thorax black except for a band on the pronotum extending onto 

 the posterior lobe, two patches on the scutellum, the metanotum, 

 large patches on the propodeum, a patch on the pleuron below the 

 wing, and a spot on the tegula, all of which are creamy white; tegulae 

 low and smooth; enclosure with a medial groove and lightly ridged 



