98 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



BEMBIX SPINOLAE Lepeletier. 



Figs. 157, 158, 159, 160, 194. 



Bembex spinolae Lepeletier, Hist. Nat., 1845, vol. 3, p. 277. 

 Bembex fasciata Dahlbom, Hymen. Europ., vol. 1, 1845, p. 487, female. 

 Bembex fasciata Walsh and Riley, Amer. Ent., vol. 1, 1860, p. 126, fig. 98. 

 Bembex spinolae Handlirsch, Sitz. Akad. Wissensch. Wien, Math.-Nat. CI., vol. 



102, 1893, p. 825. 

 Bembex spinolae Fox, Proc. Acad. Nat. Sci. Phila., 1895, p. 357. 



Male. — Black: Labrum, mandibles except apices, clypeus, scape 

 and first two flagellar segments below, spot between antennae, broad 

 anterior orbits, narrow posterior orbits, spot on sides of protborax 

 sometimes extensive and sometimes wanting, tubercles and posterior 

 border of the segment both above and below tubercles variable in 

 extent, tegulae more or less, sometimes small spot on mesopleurae, 

 rarely small lateral spots on scutellum, fasciae on tergites 1-5, all of 

 which may be interrupted medially or all continuous except the first, 

 lateral spots on sternites 2-5, femora distally more or less, tibiae ex- 

 cept stripe on posterior surface variable in extent, and tarsi, light or 

 greenish yellow. 



The antennae are slender and segments 7-9 and sometimes 6 also 

 are spinose on the posterior surface, due to the presence of small pits, 

 of which larger ones are found on 10 and 11. The middle femora are 

 dentate. The second sternite usually bears a prominent median 

 tubercle but this in some specimens is much reduced or wholly want- 

 ing. The sixth bears a small median process that is pointed and 

 obliquely directed backward. The seventh bears a median carina 

 more or less pointed posteriorly. The genital stipes vary somewhat, 

 as is shown in the accompanying figures. The variation in the extent 

 of the maculations is great. As a rule the maculations are less ex- 

 tensive on those specimens from the north than on those from the 

 south, but this is by no means universal. The abdominal fasciae 

 may be very narrow or relatively broad, closely approximated or 

 widely separated medially and more or less sinuate in outline. The 

 markings of the thorax also varies. 



Female. — Black: Labrum, mandibles except apices, clypeus, spot 

 between antennae, scape and basal part of flagellum below, broad 

 anterior orbits, posterior orbits, spot on side of prothorax variable in 

 extent, tubercles more or less, posterior border of the segment above 

 and below the tubercles variable in extent, spot upon sides of meso- 

 pleurae variable in size and sometimes wanting, sometimes spot on 

 sides of median segment, fasciae on tergites 1-5, the first invariably 

 interrupted medially, the remainder in some cases all interrupted 

 medially, in others only part interrupted, and in still others all con- 

 tinuous, lateral spots on sternites 2-4, femora distally more or less, 



