Some New Dipíera From Argentina 



BY 



Raymond C. Shannon 



Instituto Bacteriológico. Departamento Nacional de Higiene, 

 Argentina 



In the course of the entomological work at present being condiieted 

 on the bloocl-siicking- groups of Diptera in northern Argentina, by the 

 Instituto Bacteriológico, eertain species of Diptera have been obtained 

 in the miscellaneoiis collecting which are of unusual interest. Several 

 of these represent farailies which have not, as yet, been recorded for 

 Argentina, some of which are herein described. 



In conneetion with these heretofore unrecorded families it will be 

 appropriate to add a few words regarding the families of Diptera of 

 Argentina, as a wliole. In the "Catálogo de los Dípteros de las Repú- 

 blicas dpi Plata", published by Bréthes in 1908 (Anales Museo Nacional 

 de Buenos Aires, vol. 16) fifty families of Diptera are recorded for 

 Argentina. Certain changes have occurred in the status of some of 

 these families since this date. At present some are considered as 

 representing two families as in the case of the Bibionidae which is now 

 divided into the families Scatopsidae and Bibionidae ; the genus Ce7'a- 

 iopogon and allies (Ceratopogonidae) have been separatecl from the 

 fhironomidae as a distinct family ; and certain genera formerly ineluded 

 under the oíd family Muscidae are now placed in a sepárate faraily, the 

 Calliphoridae. On the other hand, certain other groups which were 

 recognized as families are at present being ineluded under othcrs. Thus, 

 the Limnobiidae are now grouped with the Tipulidae ; the Phasiidae and 

 Ocypteridae with the Tachinidae and the Anthomyidae and Scatopha- 

 gidae are placed under the Muscidae. 



A certain species, recorded under the family Scatophagidae as 

 Scatophaga diadema Wiedemann, belongs to the unrecorded family 

 Phycodromidae. Choetura rufipes Macquart is likewise recorded under 

 Scatophagidae. This genus and species is unknown to the writer, but 

 it is practically certain not to belong to this family (= subfamily). 

 Lately Bréthes has recorded the family Trichoceridae from Cape Horn 

 and Alexander has recently recorded the Blepharoceridae, Dixidae and 

 Tanyderidae, the former from Mendoza, the others from Córdoba. In 

 the case of the Dixidae, it is now considered a subfamily of the Culici- 



