NAMES APPLIED TO THE EUCERINE BEES OF NORTH 



AAIERICA.^ 



By T. D. A. COCKERELL, 



0/ the University of Colorado, Boulder. 



INTRODUCTION. 



The Eucerinse are bees of the family Anthophoridae, in whicli tl^e 

 paraglossse are very long and hairy. The antennae of the males are 

 usually very long, and the two sexes generally differ much in appear- 

 ance. No fossil eucerine bees are known; CaZy^/a^i's from Florissant, 

 at first supposed to belong hero, proves to belong to the Bombidge.^ 

 At the present time the subfamily is richly represented in the nearctic 

 and palssarctic regions, and is also quite abundant in the neotropical 

 (especially southward). In Africa it is widely scattered, but the 

 species are not very numerous. In the Indian and Chinese regions 

 there are rather numerous species, mostly, however, from the borders 

 of the palsearctic. In the ]\Ialay and Austromalay regions they are 

 absent ; they are also absent from Australia and New Zealand, as well 

 as from the islands of the Pacific and the Indian Ocean. Supposed 

 species of Tetrdlonia recorded from Australia seem to belong to the 

 nomiine group Reepenia of Friese. 



The holarctic Tetralo7iia, with three submarginal cells in the ante- 

 rior wings, and six-jointed maxillary palpi, must be regarded as the 

 basic type of the subfamily. From this has arisen the palaearctic 

 Eucera, with only two submarginal cells. This now well-defijied 

 group may have originated in a "mutation," for a specimen of 

 Tetrdlonia acerba taken by ]Mr. G. Hite, at Boulder, Colorado, has 

 only two submarginal cells on each side, and would be referred to 

 Eucera were it not evidently an aberrant specimen of a well-known 

 species of Tetrdlonia.^ 



1 The asterisk (*) indicates that the species is in the collection of the United States National Museum. 

 Certain few specimens sent to the Museum by Prof. T. D. A. Cockerell and labeled cotypesare considered 

 paratypes, as Prof. Cockerell uses the name "cotype" in the same sense in which the Museum uses "para- 

 type." The Museum has a goodly lot of unworked material in this group and when this has been deter- 

 mined the number of species in this collection will be greatly increased. Of the 261 names in the following 

 list, 79 are represented by specimens in the collection. Of this 79, 26 are types or paratypes.— S. A. 



ROHWER. 



2 Ann. Mag. Nat. Hist., Oct., 1908, p. 324. 



» University of Colorado Studies, 1907, p. 256, vol. 4. 



Proceedings U. S. National Museum, Vol. 43, No. 1932. 



261 



