Deutsch. Ent. Zeitschr. 1910. 54^ 



New species of Coleoptera from West Argentina. 



By A. C. Jensen-Haarup, Silkeborg (Denmark). 



Genus Berosus, 



During my first journey in Western Argentine I collected 

 a number of species of the genus Berosus^ which after my return 

 to Denmark Avere sent to Mr. Regimbart in France for de- 

 termination ; Mr. Regimbart kindly examined all my specimens, 

 and almost all the species proved to be new or at least not 

 described , though some of them were not unknown to him. 

 Mr. Regimbart labelled the specimens according to the names he 

 would give the various species in his future descriptions. 



Meanwhile, this eminent entomologist died, and as far as I 

 know , the new species have never been published. Now as my 

 second voyage (1906 — 07) to the Argentine Republic brought me 

 some other new species from the districts round Mendoza , it 

 seems to me to be right now to give descriptions of all the 

 species. As to the specimens , which Mr. Regimbart has seen 

 and labelled, I accept the names given by him; „Reg. i. 1." will 

 show these names. 



One of the species [B. Engelharti) in the following table has 

 been described before. 



Table of species: 



1. Apex of each elytron with a spine or sharply defined tooth 



near the sutural edge , almost as in the palearctic 



B. spinosus 2. 



Apex of elytra without spines or teeth , but sometimes 

 distinctly angular near the sutural edge, which can be 

 sharply produced 4. 



2. Interstices of elytra all over coarsely punctate. 



B. pedregalensis n. sp. 

 Interstices very finely punctulate , but sometimes some of 

 them with a single row of distinct punctures . .3. 



3. 2°<^ and 4*^^) interstice with a distinct row of distinct and 



. coarse punctures. Smaller species. B. stenocoptusV.^^y.\.\. 

 2"*^ and 4*^ interstice with an indistinct row of fine punc- 

 tures. Larger species . . . • B- obsoletus Reg. i. 1. 



4. Striae of elytra deeply impressed, strongly punctured. Small 



species (2 — 2^/2 mm) . . . o. 



1) The interstice between the suture cand l«t stria is here re^arded 

 as the sutural interstice and not counted; thus 1. interstice is lymg 

 between Ist and 2nd stria, 2nd do. between 2"^ and ^r-i stria and so on. 



