10. 
id: 
12. 
13. 
Sphecoidea of Nebraska 103 
f Pront with rather fine close purictures ...........000ceeneee terminatus 
Meour with ldreer separate punctures: os. 0002i cds de ws cs edene- fusus 
Meanie sed, OF Fed. ane Diack ve. cy 6.40 Cbs ee Ws tod ewes lotine Sy 4 
MRC peas CX LETCNS TICEE <2, cis, 1 < ciniaiwis ed,cla x no)5b ae 45-9 0a'e tween beeen 10 
. Sides of propodeum not striate, or striate only at edges, coriaceous, 
Hiely. Sranilate ok TEtHeitlateni | ac..ccc:c<6 oc. xse ou srscis oelaw eee ee 5 
Sides of propodeum distinctly striate MEouE Rout, often punctate be- 
(TR ELELEIS ASR 2 CA RAE en PSP RS NEON Se) 6 
. Abdomen entirely red; tibiae black; stout species ............ tarsatus 
Abdomen black apically; tibiae reddish ................... propinquus 
. Apex of femora, tibiae and tarsi entirely reddish yellow..... minimus 
At most the tarsi are partly reddish or reddish brown ............. 7 
. small, slender species; apical half of abdomen black .............. 8 
Career, stouter species; abdomen’ all. red... . 6. ..ic. selec es ced ocenans 9 
. Clypeus slightly rounded or subtruncate on the anterior margin, 
nigrocaudatus 
Clypeus extended medially so as to form a triangular projection on 
PCM ATLETIOT walla GOL 779s wee tat eyes leaves, oy ccerarale oh oad artis ater ees a angularis 
. Third antennal joint not twice its apical width, antennae rather stout, 
a little thickened mesad; thorax and propodeum shining, sparsely 
Drei: ek debi oo Spero ite Cte eee GE One BE Re ee nie cee texanus 
Third antennal joint at least twice its apical width, antennae hardly 
thickened mesad; thorax and propodeum with rather abundant pile, 
tarsatus 
Width of third submarginal cell along the radius equal to the radius 
from the third submarginal cell to the truncation; wings subfuscous, 
acuta 
Width of third submarginal cell along the radius not as much as the 
length of the radius from the third submarginal cell to the trunca- 
Hole wines nearly of entinelyuCléaty 3 sx sdeacdic sue wiclelate oon aio axerelrere II 
Apex of femora, and tibiae and tarsi, reddish yellow ........ minimus 
AMMO Statarsioie pact LeGUIGh DLOMWINc. sus cles elyou« stints icte's + casicie saree 12 
Sides of propodeum distinctly striate throughout; vertex shining, 
rather sparsely punctate; small, length 5-6 mm. ....... :,..glabrior 
Sides of propodeum indistinctly striate, granulate ................ 13 
Wings subhyaline, interocular space at vertex scarcely as great as the 
length of antennal joints three and four ........... Pree mundus 
Wings subfuscous, interocular space at vertex greater than the length 
Of antennal jomts three and four’. .........c.00cscevenee punctifrons 
Tachysphex belfragei (Cresson). 
1872. Larrada belfragei Cresson, Trans. Amer. Ent. Soc., IV, p. 215. 
1913. Tachysphex belfragei Williams, Kans. Univ. Sc. Bull., VIII, 
p. 164. 
421 
