no. 2173. A REVISION OF THE BEMBICINE WASPS— PARKER. 87 



BEMBIX NUBILIPENNIS Cresson. 



Figs. 146, 147, 188. 



Bembex nubilipennis Cresson, Trans. Amer. Ent. Soc, vol. 4, 1872, p. 218, 



female, male. 

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



vol. 102, 1893, p. 838, pi. 2, fig. 38; pi. 7, fig. 25. 



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

 part of frons, spot before anterior ocellus, scape below, broad anterior 

 orbits, posterior orbits, narrow line on posterior border of pronotum, 

 sometimes widely interrupted medially or entirely wanting, spot on 

 sides of prothorax variable in extent and usually including the tuber- 

 cles, spot on tegulae, short lateral lines on scutum above base of 

 wings, sometimes small lateral spots on scutellum, spot on lateral 

 angles of median segment very frequently lacking, small spot on 

 mesopleurae on a few specimens, broad fasciae on tergites 2-5 and 

 sometimes 6, the first abruptly narrowed and more or less widely 

 interrupted medially, the remaining fasciae with rare exceptions all 

 continuous, biemarginate, and slightly notched medially, on anterior 

 border and more widely notched medially on posterior border, lateral 

 spots on sternites 2-5, which may or may not be connected by apical 

 lines, femora except basally, tibiae, and tarsi, yellow. 



Segments 6-9 of the flagellum are spinose on the posterior border 

 and segments 4-11 on the posterior surface bear pits, those on 10 and 

 11 being large and conspicuous. The ultimate segment is a trifle 

 longer than the preceding segment, only slightly cruved, broader at 

 the base than at the apex, and is roundly truncate apically. The 

 intermediate femora are unevenly and raggedly serrate below. The 

 second sternite bears a large median tubercle, hooked and pointed 

 posteriorly, and the sixth bears a prominent oblique process, flattened 

 on its distal surface and roundly pointed at the apex. This sternite 

 also bears an additional pair of rounded lateral processes or ridges. 



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

 below, space between insertions of antennae extended upward slightly, 

 spot in front of anterior ocellus, broad anterior orbits, broad posterior 

 orbits narrowed above, posterior border of pronotum, sides of pro- 

 thorax except dusky line in front of tubercles, tegulae, lateral lines 

 on scutum frequently shortened, sometimes a pair of discal lines on 

 scutum, broad fascia on scutellum sometimes narrowed medially, 

 fascia on metanotum, curved fascia on dorsum of median segment 

 frequently interrupted medially, lateral angles of median segment 

 and more or less of sides of same, spot on metapleurae, spot variable 

 in size on mesopleurae, broad continuous fasciae on tergites 1-5, the 

 first sometimes interrupted medially, more frequently roundly emar- 

 ginate on anterior middle, rarely inclosing a pair of small medial an- 

 terior black spots, second usually inclosing a pair of black spots 



