AKT. 5 GENERIC REVISION OF THE FOSSORIAL WASPS PARKER 39 



Scape with black spot above; mesosternum yellow bituberculata. 



34. Fascia on first tergite inclosing a medial black spot basally ; bead, thorax, 



and base of abdomen covered sparsely with long, white pubescence, most 



evident on the lateral angle of the propodeum scitula. 



Fascia on first tergite without medial black spot ; pubescence not as above ; 

 face and sides of thorax more or less silvery exigua. 



35. Scutum without discal markings 36. 



Scutum with discal markings 37. 



36. Mesopleura immaculate ; fascia on first tergite interrupted widely serrata. 



Mesopleura with large yellow spot ; fasciae on all tergites continuous. 



pulchella. 



37. Discal marks on scutum small ; mesopleura black, rarely with small macu- 



lations ; venter of abdomen almost entirely black 3S. 



Discal marks on scutum conspicuous ; mesopleura yellow ; venter of abdo- 

 men almost entirely yellow 39. 



38. Wings infumated ; fascia on first tergite widely interrupted and yellow. 



serrata. 

 Wings hyaline; fascia on first tergite narrowly interrupted and white. 



plana. 



39. Species large. 18-20 mm. ; no black on mesosternum callista. 



Species smaller, 12-14 mm. ; black .spot, variable in size, in front and 



slightly above middle coxa melanosterna. 



STICTIELLA PICTIFRONS (Smith) 



Monedula pictifrons Smith, Cat. Hym. Brit. Mus., vol. 4, 1856, p. 335. 

 Monedula inermis Handlibsch, Sitz. Akad. Wissensch. Wien, Math.-Nat. CI., 



vol, 99, 1890, p. 144. 

 Monedula denverensis Cameron, Trans. Amer. Eut. Soc, vol. 34, 1908, p. 235. 

 Stictiella pictifrons Paekee, Proc. U. S. Nat. Mus., vol. 52, 1917, p. 25. 



The female of this species, in color and color pattern, so closely 

 resembles Steniolia duplicate Provancher that it is very frequently 

 mistaken for that species and I have frequently found specimens so 

 labeled. The maculations on the dorsal side of the thorax and abdo- 

 men of the male are much lighter than on the female ; in fact, they are 

 almost white. The male is characterized by having on the third and 

 fourth segments of the anterior tarsus well developed posterior apical 

 processes that are invariably black. 



SPECIMENS EXAMINED 



Colorado: Livermore (July 8, 1900) ; Boulder (September 8, 1908, S. A. Roh- 



wer) ; Denver (August 24, 1908, C. Bennett). 

 Georgia: Marietta (June 7, 1909). 

 New Mexico : Las Vegas, Hot Springs. 



Pennsylvania: Carlisle Junction (July 1, 1909, P. R. Myers). 

 Texas: Kerrville (June 19, 1907, F. C. Pratt). 



This species has also been reported from Virginia, North Carolina, 

 Kansas, Arizona, and California. 



