no. 3603 HERMETIA — JAMES AND WIRTH 13 



Werner, G. D. Butler; 9 cTcf, 2 99, Tucson, Aug. 15, 17, 23, and 26, 

 1955 (one pair in copula), G. D. Butler, and Aug. 16, 1940, D. J. and 

 J. N. Knull. New Mexico: 2 cftf 1 , Rodeo, Aug. 5, 1955, R. R. 

 Dreisbach, and Aug. 7, 1958, R. E. Rice; 1 9, 3 cf cf , 18 miles north of 

 Rodeo, Aug. 25, 1958, P. M. Marsh, R. M. Bohart; 1 cf, 19 miles 

 north of Rodeo, Aug. 9, 1965, E. M. Brown. MEXICO: Baja 

 California: 1 d\ 15 miles south of Santo Domingo, Oct. 4, 1941, 

 E. S. Ross, R. M. Bohart. Sonora: 2 cf cf , 10 miles west of Alamos, 

 July 21, 1954, M. Cazier, W. Gertsch, Bradts. Sinaloa: 1 d\ 30.5 

 miles north of Los Mochis, Aug. 24, 1964, M. E. Erwin; 1 d\ 8 miles 

 south of Elota, July 2, 1963. Nayarit: 1 d\ Ahuacatlan, July 

 18-22, 1951, on flowers of Donnellsmithia hintoni M. and C, P. D. 

 Hurd. 



It is noteworthy that this is a late summer and fall species, whereas 

 the two that are largely sympatric with it, H. melanderi and H. nigri- 

 cornis, are spring and early summer species. 



Hermetia impressa James, new species 



Figure 2 



Differs from all other known species of the group in the deeply 

 impressed sculpturing of the frons, as described below, and the 

 divided ante-ocellar tubercle. 



Male: Head black; a pair of spots posteriorly on the vertex, the 

 lower facial orbits, frontal callus, and a small margin above each 

 antennal base, yellow; a brownish spot below the ante-ocellar tubercle 

 and, in the paratype, an indefinite spot of similar color on each side 

 of the anterior ocellus. Frons deeply excavated by a broad trough 

 or furrow beginning on each side between the triangle of the frontal 

 callus and the ante-ocellar tubercle and continuing above the latter 

 in the form of an inverted U, the ocellar triangle being broadly 

 separated from the ante-ocellar tubercle by this trough; the usual 

 area above the frontal callus with two strong glabrous carinulae and 

 a weaker one between them, all running longitudinally of the frons; 

 ante-ocellar tubercle glabrous, divided above by two transverse 

 furrows, the lower the more prominent; supra-antennal callus distinct 

 and glabrous; pile of head white. Eyes with short, dense black pile. 

 Basal two antennal segments brownish yellow; flagellum dark brown, 

 style black and black pilose. Proboscis brownish black with white 

 pile. Thorax mostly black; middle of pronotum, humeri, and apical 

 third of scutellum yellow; mesonotum with mostly golden pile, the 

 presutural vitta and transverse prescutellar band well marked; a 

 triangular patch above each wdng base, a stripe to each side of the 

 mesonotal vitta and turning J-like laterad so as partially to define 

 an outer pair of vittae, and basal third of scutellum, black pilose; 



