pepsinae: tribe pepsini 



115 



Figure 58. — Localities for Calicurgus hyalinatus excoctus. 



Paratypes: 9, Chiricahua Mts., Ariz., July 8, 1932, J.D.Beamer 

 (Lawrence). 9, on forest floor, 15 miles nortfi of Ciiernavaca at 7,500 

 ft., Morelos, Mexico, June 26, 1951, H. E. Evans (Evans). 9, El 

 Salto, Durango, Mexico, Aug. 3, 1951, P. D. Hurd (Berkeley), cf , 

 San Juan Lagos, Jalisco, Mexico, July 27, 1951, H. E. Evans (Evans). 



Genus Dipogon Fox 



Small sized, stout species, the forewing 2.3 to 10 mm. long; clypeus 

 broad and short; mandible with 3 teeth, counting the apical point (in 

 all other Nearctic Pepsinae, the mandible has only 2 teeth) ; cardo of 

 maxilla of female with a fascicle of long hairs curving to and approxi- 

 mately reaching base of mandible (this fascicle is lacking or undevel- 

 oped in all other Psammocharidae) ; pronotum long, flat, its hind 

 margin arcuate; second intercubital vein curved, oblique; second 

 recurrent vein reaching second cubital cell at its basal 0.3 to 0.45; 

 cubital vein reaching the wing margin in all species but those of the 

 pulchripennis group; base of first discoidal cell without an irregularity 

 in the wing membrane; nervulus beyond the basal vein by about 0.2 to 

 0.3 its length; nervellus ending some distance before the juncture of 

 cubitella with discoidella; anal lobe about 0.35 as long as submediella 

 (pi. 1, figs. 9, 10); hind tibia smooth dorsally, the brush on its inner 

 side moderately broad, without a subapical constriction; last segment 

 of tarsi without preapical bristles; tooth on tarsal claws small, erect, 

 and acute. 



The species of Dipogon probably all nest in holes in wood. The 

 females of the subgenus Deuteragenia are taken most often on stumps 

 and the trunks of dead trees, while those of the subgenus Dipogon are 

 more frequent on smaller twigs and branches. The dark bands on the 



