78 
Psyche 
[Vol. 94 
sides of the mark are irregular, the apex is transverse.” This is 
distinctive, as coloration goes. Further, he mentioned (p. 196): a 
“mark over the antennae, broader than long, transverse above, 
gradually roundly narrowed below, ending there in a nipple-like 
point”, which is also distinguishing. Finally, he also mentioned (p. 
197): “The head, thorax and base of the abdomen are densely 
covered with long, fuscous black hair.” This is a specific character of 
Euodynerus discogaster (Bequaert, 1939), which now becomes a 
junior synonym. I have compared the holotype of this latter species 
with the holotype of Euodynerus scudderi, and scudderi differs 
primarily by the absence of the discal spots on metasomal tergum II. 
Among the specimens of discogaster in the MCZ is a female labelled 
“Webster Colorado July” which also lacks these spots and confirms 
that discogaster is variable in this regard. 
Pterocheilus decorus Cresson, 1879 
Pterochilus [!] decorus Cresson, 1879: xvii. 9(5 (Bohart, 1940, states that the female is 
the holotype); “Nevada” (Academy of Natural Sciences). 
Odynerus ? bradleyi Cameron, 1909: 81. “ 9 ” (= < 5 ); “Durango, Colorado” (British 
Museum). Senior secondary homonym in Pterocheilus of Pterocheilus bradleyi 
Bohart, 1950. New Synonymy 
Bohart did not find the type of this species. I chanced upon a 
specimen labelled in Cameron’s hand “ Odynerus ? bradleyi Cam.” It 
lacks a BM type number label, but was probably not assigned one 
because “type” was not written on the determination label, contrary 
to Cameron’s usual practice. The specimen is labelled with a printed 
label reading “Oslar. Durango Col.;” beneath this is a handwritten 
label reading “Durango Col 5/29/99;” a label bearing the number 
“5197;” the printed label “P. Cameron Coll. 1914-110;” and the 
aforementioned determination label. The handwritten labels are in 
the same hand as other specimens stated to be from Oslar. The type 
has the head glued in place, the forelegs and propleura broken off, 
the midlegs (the left coxa remains), and the right hind tibia and 
tarsus also broken off. One of the fore coxae and femur, the right 
midieg and the right hind tibia and tarsus are glued to the first label. 
The specimen is otherwise intact, and is easily recognizable as a 
species of Pterocheilus. The specimen matches the (for Cameron) 
extended description quite well, both in coloration and structure. 
