Document Type

Article

Journal/Book Title/Conference

Psyche

Volume

28

Issue

6

Publication Date

12-1-1921

First Page

160

Last Page

164

Abstract

In my Catalogue of Ethiopian Diplopterous Wasps, published in 1918, I have attempted to correlate the various described forms of African Eumenes. In many cases, where specimens were not available for study, my conclusions were based on such inferences as could be made from published accounts, and were therefore only tentative. Eumenes alluaudi J. Perez,2 for instance, I regarded at the time as one of the color variants of Eumenes lepeleterii Saussure, to which it was said to be related by the author of the species. Through the courtesy of Mr. A. S. Rohwer, I recently had opportunity to examine a series of specimens of E. alluaudi in the U. S. National Museum collection, and was surprised to find that this wasp is structurally very distinct from any of its congeners. Since it apparently is restricted to a very small range in the Seychelles and neighboring islands, and thus; affords a typical illustration of the effects of oceanic isolation upon the appearance and preservation of specific characters, it may be useful to redescribe the form and to figure some of its most note-worthy peculiarities.

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