Pompilus angularis angularis

Pompilus (Ammosphex) angularis angularis (Banks)
Psammochares angularis Banks, 1910, Jour. N. Y. Ent. Soc, 18: 115 [Type: S, California: Claremont (C. F. Baker) (MCZ, no. 13, 676)]
Pompilus (Ammosphex) angularis Evans, 1951, Trans. Amer. Ent. Soc, 77: 232-234.
Pompilus (Ammosphex) angularis angularis Evans, 1953, Ann. Ent. Soc. Amer., 46: 538.
Rather than provide a description for this form, which occurs only in extreme northern Mexico and which I described fully in 1951, I shall merely indicate its differences from the widely distributed Mexican angularis volcanicus, considered below. The males of typical angularis have the parameres much longer than the digiti and distinctly attentuate apically (as figured by me in 1951, Fig. 181), while in a. volcanicus the parameres are decidedly blunt and only slightly longer than the digiti; thus these two forms can be separated only by extending the genitalia at least enough to study the tips of the parameres. Females of the nominate subspecies show considerable variation in the width of the front (MID .55-.61 X TFD) and also often have more silvery pubescence on the body than in volcanicus; they also rather commonly have the comb-spines somewhat longer than the width of the tarsus, while in females which I have taken in close association with male angularis volcanicus they are consistently no longer than the width of the tarsus. However, the two forms are not clearly separable in this sex. I would expect to find males in the mountains of Chihuahua and Sonora with parameres of intermediate length between those typical of the two subspecies.
Distribution. — Transcontinental in North America, north to Massachusetts and to Yukon, south to Baja California and Texas, but apparently absent from the southeastern United States.
Mexican specimens examined. — 19. Baja California: 1 9 ,
Sierra San Pedro Martir, 6500 feet, 1 June 1958 (J. Powell) [CIS]. (Map 68.)