iia 
The Sphegoidea of Nebraska 39 
male, not petiolate in the male; dorsal abdominal segments 2-4 in 
male, 2-6 in female, with a median transverse furrow or impres- 
BR Ne ae reer Easels kieo hy Sid as la pause o¥ioGW asia nlice sss Eucerceris 
Genus Cerceris Latreille 
SYNOPSIS OF THE SPECIES 
[Sine Lee) SRAM cbt OC CRC ORIEIE te RSE. PICT ARS ec aR Eine ETC 1 
DULBNES. 2 5 TR ies as aCe tic eR aR 16 
1. Median lobe of clypeus with a prominent projection, raised ante- 
PLO Tid Ace Cain AIPibpod i a ERT DA OCR. TAO UR TL Cr IE ena Pe 2 
1. Median lobe of clypeus without a prominent projection, but flat- 
Tened: | SGMeIINES "SEOMGlY GONVER. occ ccenccisc sce + wns a soc 11 
2. Insect entirely yellow with ferruginous sutures, no black 
excepting apex of antennae and mandibles; median lobe 
of clypeus with a strong lunate projection, the corners 
AGM One pity oO hianinice ears are oe retetavelzre'e. « stove eiciete a ceele «here. frontata 
2. Insect with some black on body, at least the triangular en- 
Glosureomithe metanotind is* black’ 2.022 ).5 aye veer te eye's 6 ores 3 
3. Ground color of insect black, with yellow and sometimes with 
EG CEG He MIT SIINO' Geet eevee ease inst pve ovartia (ele siete teters vote aie eaters aaT 4 
3. Greater part of body ferruginous; abdominal segments one and 
two with irregular yellow blotches on the sides; scutellum 
reddish, postscutellum yellow; triangular basal enclosure 
black, dull, with a few large punctures at the sides and a 
strong median furrow; median lobe of clypeus armed 
Withieaa Strom Luimate “prOseCtlOM. .mcs.ccceis s aa ie ole venator 
4. Median lobe of clypeus with a broad, short crescent-shaped 
projection, the distance between the points equal to the 
length of the first three joints of the flagellum; second 
dorsal segment of abdomen with a broad yellow band, 
remaining segments immaculate ........:....... flavofasciata 
4. Median lobe of clypeus with a projection of various shapes, 
but never as broad as length of first three flagellar joints. 5 
5. Basal segment of abdomen more or less ferruginous; legs fulvous 
and yellow ..... Ne iavaleianyartya.s' Forcioveidia, Ae S54 iin oeie se BOAO eet as 6 
5. Basal segment black or black marked with yellow................ iG 
6. Yellow abdominal bands broad, occupying almost entire 
dorsal surface of abdomen; projection of clypeus nar- 
Rovers sepacaliye Vettat at DASE. <3 ieee sss bon R ee eee ne vicina 
6. Yellow abdominal bands narrow, occupying about one- 
fourth of dorsal surface; projection of clypeus as broad 
at apex as at base, quite deeply concave......... nebrascensi$ 
Pescara sn tiated” WItly “VEIOW. 52 ocevs class acis om adeeb eiecw tenis 8 
7. Scutellum black, postscutellum generally yellow................. 9 
361 
