306 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



pleura; legs dark brown, only apical tliree-foiu-ths of femora and 

 knees lighter brown; wing brownish hyaline, vein Mi and crossvein 

 r-m present, m-cu crossvein absent, vein Mj a little longer than 

 R4+5, veins M2 and M4 dark brown but other M veins light brown 

 (about as in pi. 3, fig. 11); squama quite infuscated, semitransparent, 

 margin darker brown, halter knob dark brown, stem light brown. 



Abdomen with typical Ogcodes pattern as in plate 5, figure 29, 

 tergites dark brown, nearly black, the brownish white posterior fasciae 

 occupying about one-fifth of each segment, dorsum covered with 

 sparse, short white pile; sternites i-ii dark brown, iii-vi mostly 

 brownish white, the anterior one-fourth of iii-vi darker brown. 



Genitalia dark brown; aedeagus as m plate 7, figure 42; ejaculatory 

 apodeme as m plate 13, figure 104. 



Female: Unknown. 



Holotype: Male, Oak Creek Canyon, Arizona, elevation 4,000-5,000 

 feet, June 11, 1940 (G. E. Bohart, CAS). 



Paratopotypes: 1 cf (G. E. Bohart, UCLA); 9cf, June 8, 1940, 

 "collected from Crabro nest" (G. E. Bohart, GEB, USNM, EIS). 



Paratype: 1 d", Huachuca Mts., Arizona, Aug. 24, 1934 (USNM). 



Paratype variation: Head reddish brown to dark bro^vn ; upper 

 margin of postalar callus ranging to light bro\\Ti, narrowly white in 

 one male; posterior margin of humerus sometimes light brown; parts 

 of femora and tibiae occasionally light to medium brown, when 

 light brown the color contrasts sharply with the dark brown coxae; 

 squama hyaline to nearly opaque, light to dark brown throughout, 

 halter light to dark bro^vn, the stem usually darker than in holotype; 

 genitalia with no appreciable differences. 



Remarks: Though not strikingly different in color from adaptatus, 

 pallidipennis, or sabroskyi, boharti differs mainly in having the wing 

 membrane evenly bro^vnish hyalme and by the male genitalic struc- 

 tures. In some respects the ejaculatory apodeme resembles that of 

 gibbosus, but other features do not indicate a very close relationship. 

 The closest relative of 6oAar/i is probably adapiatvs, the two differ- 

 ing primarily in the general coloration, wing uifuscation, and the 

 structure of the male genitalia. 



The 9 male paratopotypes were recorded by Sabrosky (1948) as 

 "west subsp. of pallidipennis." Bechtel and Schlinger (1957), in their 

 summary of acrocerid-crabronid relationships, referred to this species 

 as Ogcodes "species #1," and it seems quite probable, on the basis of 

 available evidence, that the crabronid wasp involved was a species 

 of the genus Ectemnius rather than Crabro. 



This species is named for George E. Bohart, the collector, who 

 offered me not only his large personal collection for study but also 

 some valuable information concerning the family Acroceridae. 



