38 Clarence E. Mickel 
Hoplisus corrugis Mickel. 
1918. Hoplisus corrugis Mickel, Univ. Nebr. Studies, XVII, p. 3109. 
Males 1: Mitchell, June 16, 1916 (C. E. Mickel). 
Hoplisus simillimus (F. Smith). 
1856. Gorytes simillimus F. Smith, Cat. Hym. Brit. Mus., IV, p. 367. 
1867. Gorytes ephippiatus Packard, Proc. Ent. Soc. Phil., VI, p. 426. 
1895. Gorytes simillimus Fox, Proc. Acad. Nat. Sc. Phil., p. 536. 
Males 3, females 4: Rulo (1), Omaha (1), Carns (1), Glen 
(1), Monroe Canyon (2) and Warbonnet Canyon (1); June 23 
to August 29; visits flowers of Solidago canadensis. 
Hoplisus rufocaudatus Mickel. 
1916. Hoplisus rufocaudatus Mickel, Trans. Amer. Ent. Soc., XLII, 
p. 401. 
Males 1: Mitchell, August 12, 1915 (E. M. Partridge). 
Pseudoplisus Ashmead 
KEY TO THE SPECIES 
MaTES.. «Pose. ebo55 Soa aie oa ee ot CRM ee eae be ENON ake nC ene 5 
2. Suture between mesonotum and scutellum not foveolate; wings yellow- 
ish ferruginous; abdomen with short, silky, golden pubescence, 
phaleratus 
Suture between mesonotum and scutellum foveolate ............... 3 
3. Suture between mesepimeron and metapleurae foveolate for the entire 
length; clypeus entirely black; front, venter, and last three abdomi- 
nal tergites with large punctures; suture between triangular en- 
closure and sides of propodeum foveolate ............. varipunctus 
Suture between mesepimeron and metapleurae not foveolate ....... 4 
4. Wings subfuscous; clypeus entirely yellow; propodeum entirely black; 
pygidial area with sparse, shallow punctures ............. bipartitus 
Wings hyaline, the marginal cell excepted; clypeus with base only yel- 
low; propodeum with two rufous spots; pygidial area with deep 
ClOSEn SPUTCHUTES Acces cea oe ete ieee ale serene ener rufomaculatus 
5. Suture between mesonotum and scutellum not foveolate ........... 6 
Suture between mesonotum and scutellum foveolate .............. 7 
6. Wings with a light yellowish cast; flagellum rather long, the joints 
rounded. Out abereathet. ..¢ cas saceleccus al reli hleue ieee aerate phaleratus 
Wings dark fuliginous, the apex hyaline; flagellum shorter and some- 
what clavate, the joints not rounded out beneath ....... propinquus 
7. Wings entirely fuliginous; first abdominal tergite entirely yellow; 
356 
