1987] 
Carpenter — Odynerus scudderi 
79 
Distinctive details are the distribution of rufous color on the meta- 
soma, the (Cameron, 1909: p. 81) “Clypeus not much longer than 
wide, the top dilated broadly in the middle, the apex with a shallow 
incision,” the “Antennae longish, stout, dilated towards the apex,” 
the pronotal “keel,” and the metasomal shape (I “cup-shaped,” II 
“as wide as long and narrowed at the base;” actually it is one and 
one third times as wide as long). However, Cameron stated that the 
specimen is a female, but it is a male. The description of the 
antennal apex leaves no doubt that Cameron was dealing with a 
male and erred in stating the sex. He stated: “the apical joints 
marked with black at the apex, the last rounded above, flat below, 
roundly narrowed at the apex.” This is a common feature of males 
in the subgenus Megapterocheilus, to which this species belongs. 
Pterocheilus bradleyi Cameron, 1909 is a junior subjective synonym 
of Pterocheilus decorus Cresson, 1879. 
Pterocheilus chesteri New Name 
Pterocheilus ( Megapterocheilus ) bradleyi Bohart, 1950: 195. <3; “Nogales, Arizona” 
(Cornell University). Junior secondary homonym in Pterocheilus of Odynerus ? 
bradleyi Cameron, 1909 
Unfortunately, the discovery of the identity of O. bradleyi 
Cameron creates a case of secondary homonymy in Pterocheilus. P. 
bradleyi Cameron, although a junior synonym, is an available name 
(Article 10(g) of the International Code of Zoological Nomencla- 
ture), and as such is a senior homonym of P. bradleyi Bohart, 1950. 
This latter species, described from Arizona in the same subgenus, 
must be rejected (Art. 59(a)), and replaced by a new name (Art. 
60(c)), as it has no junior synomyms. I herewith propose the name 
Pterocheilus chesteri for bradleyi Bohart. The original name was 
proposed by Bohart as a patronym for J. Chester Bradley, and that 
intent is maintained by the replacement name. 
Acknowledgments 
Work in the British Museum was supported by a Milton Fund 
grant to the author. I thank M. C. Day for assistance during my 
stay, and for valuable comments on the initial draft of this paper. 
