Sphecoidea of Nebraska 115 
Sphecius Dahlbom 
Sphecius speciosus (Drury). 
1773. Sphex speciosus Drury, Jil. Nat. Hist., II, p. 71. 
1895. Sphecius speciosus Fox, Proc. Acad. Nat. Sc. Phil., p. 265. 
Males 22, females 7: Omaha (15), South Bend (2), Lincoln 
(2) and Haigler (6) ; April 20 to August 28. 
Stizus Latreille 
KEY TO THE SPECIES 
ARISE ATIC ree Wat he Adie dee MRE oaey te, toe Sisinwi tte os oe a ee eae 2 
DE 1 Ria i 3 5 AAU. SR ERO Es 9 7, 
2. Propodeum emarginate posteriorly at the sides .................-- 3 
Propodeum not emarginate, the postero-lateral angles rounded.... 6 
Bm EORNCCHPIfAl Cell HO PEMOILALE. sci ccc cc vel inves bdeéeveecdeeseaces 4 
Necgudscnbital cells distinctly: petiolate)ic.... ose sieve jae 0c vod oh aisles 5 
4. Band on tergite five; distance between posterior ocelli slightly greater 
than the distance between them and the nearest eye-margin, 
neglectus 
No band on tergite five; only medial and lateral spots; distance be- 
tween posterior ocelli about equal to the distance between them and 
Cite MnGARES UC VC—IMUnIGloes eyecare oie cysnsrayc dcsiateraie sccyo) ele, e)3om) ois, g.do strenuus 
5. Antennae placed at! about the same distance from the clypeus as from 
the eyes; space between hind ocelli just about equal to that between 
them and nearest eye-margin; not densely hirsute; tibiae only in 
Saxt yellow. hind tarsivanticely black | iv-../. esa wcle ae eee cae godmant 
Antennae placed somewhat farther away from the clypeus than from 
the eye-margin; space between the hind ocelli greater than that be- 
tween them and nearest eye-margin; rather densely hirsute; tibiae 
PACMMALSIP EMIT elue VELIOW: otis seats hot ale «lsc ciccle oles aime acca ehaeteee nanus 
6. First and second transverse cubital nervures widely separated abodve; 
SAP OR VOC eA —2ry MiiMIe) Fara c Sere aise te wicia ere, sigleletstale <tave ete brevipennis 
First and second transverse cubital nervures narrowly separated or 
meeting at the marginal cell; size, 15-18 mm. ........... unicinctus 
7. Propodeum emarginate posteriorly at the sides; twelfth antennal joint 
Pee MEE AID SCLCCEEIAS ardor Wg Si Suse Wha car d ofertas Gid'aid oe. sew own ote ead wheter 8 
Propodeum not emarginate, the postero-lateral angles rounded; twelfth 
ep ay eT t SAUL SEUISIOSE: fe fcc. ots e dis's vists;v as we an/aale wos omesmne has 12 
eR UC Lom TUe DICT oTMALKAME'S <3 ccreteale « wie gicreiete sorb wale a sile ide wuelalttelweiers 9 
etl tiumnvniehie ba ChcuitinahlctMOS)y.cctercs.caccte'sl< ech -du ois.ersie tip are ae Selects II 
g. Seventh ventral segment slightly carinated down the middle; tibiae in 
MEM MRCIE he Ao ora ieioe ME ainsi aka m oN eee Rates yt ae ee godmant 
