i 
Sphecoidea of Nebraska 47 
Vertex without a distinct median tubercle; posterior ocelli normally 
PMSA hey ce aims Sats heen Oda we yids Given Bok Cee ese Roee a ewe 3 
. Occiput distinctly striato-punctate; punctures of abdomen of medium 
RI ZC MOCHA CIES D W.IIETSIN «aie, overt cay¥ia ssecahcl lees dbale ais ie wove. aw ee ereiaie striatus 
Occiput strongly punctured; punctures of abdomen coarse; ornaments 
SUMO AS CIRM ave tcuricens aievctetetseccie aie piety creunis oe al ave Diskette: o sigtneuaie cies cornutus 
. Squamae apparently joined at the base (this appearance is caused by 
PUIG bein PA DEL ny Cll Cs) im lave aidleiateceix eos cine slevsreo, erakefmiciey ae oattepate 4 
Squamae not apparently joined at the base ...............0eeeee- yi 
. Body covered with an unusually dense growth of short pubescence; 
ANAOmen More OLN less MennimbunOUSe fcc oe. seus cs. aa Sey eine sees 5 
Body not unusually pubescent; apical segment of abdomen sometimes 
eI or Was Cat ht eee db aale Chae Muna En Heiss oui eee 6 
. Abdomen entirely ferruginous except first tergite; two apical segments 
with conspicuous blackish pubescence ...............:. argentarius 
Two apical, abdominal segments only, ferruginous; apical segments 
With tain olden pubescence’ <).. s. cies ce vests slsentsie* eer « glenensis 
. Mandibles black; continuous fasciae on all the abdominal tergites; 
EUPST Cel MASE ATIVE TUE Wel Chey os set cles cot evtel evan ais Dhcicesirele sheers et ae albosignatus 
Mandibles yellow; abdominal tergites with lateral spots; apical seg- 
LEME MLL OI OUS = ol ner. valska toccet are sas siatele el Wives ovehtiele & Spec eiireiny as UNICUS 
Eeimatadnles “CistimGlly YOMO We aic.iias. 6 'a/cia.c.vg.s,0.0 616-0, 9 vn'8-9 snlcins eeeialels 8 
Mancibles plack* Of piceous, NOt. wellowas. ccs aac-cs cle doe cosa clalelcroys 10 
. Lateral portions of abdominal segments ferruginous; abdomen not 
fisted ‘wath? yellowish Spots... siciniqje Avie oasis iwc oleh nares umbrosus 
Abdomen not at! all ferruginous (except the apical segment) ; abdo- 
Men, MaLkedcwithi.yellowisllySDOLSe seis ae vie «oles refeieie siete claus, otal spate * 9 
. Abdomen strongly punctured; scutellum not marked with yellow, 
packard: 
Abdomen finely and sparsely punctured; scutellum marked with yellow, 
laetus 
meapical abdominal segments: Lesruginous .2 244s ia esas clesie eee clea II 
PMMCAlApdOminal SEPTMENtS = datkenac metic Actaaicnias suslt cleidrels saosin 14 
. Abdominal segments without lateral spines ................20008- 12 
Abdominal seaments with lateralispinegs 002. 4.0 sc ses cies mien 13 
. Mesepisterna produced anteriorly so as to form a prominent projec- 
Hons sMarkimos ew hitisth + acatars oe ieta taeia sede sere Siayeleeotdase oe pectorosus 
Mesepisterna not produced anteriorly; markings lemon-yellow, 
delicatus 
Abdomen rather finely and closely punctured; two apical abdominal 
segments ferruginous; squamae approximate at the base, almost 
HOM CHIMES, at ao aval Mechs brees ous Sack ote ke RAT erode tegeecea fy oha/h's)6,) oro eee ieae Bid apicatus 
Abdomen rather coarsely punctured; three apical abdominal segments 
365 
