PROCEEDINGS OF THE UNITED STATCS NATIONAL MUSEUM 



issued p^^lVA. 0*s^i ^tf the 



SMITHSONIAN INSTITUTION 



U. S. NATIONAL MUSEUM 



Vol.84 Washington : 1937 No. 3011 



NEW MUSCOID FLIES (DIPTERA) IN THE UNITED 

 STATES NATIONAL MUSEUM 



By David G. Hall 



Bureau of Entomology and Plant Quarantine, United States Department of 



Agriculture 



Included among the species of muscoid flies described in this paper 

 are certain forms that are of considerable interest because of their 

 unusual host relationships or their economic importance. Names 

 for these have been requested in connection with investigations being 

 conducted on their biology or control. 



Genus HYLEMYA Robineau-Desvoidy 



HYLEMYA ABDENA, new species 



Figure 19 



Male. — Head with front narrower than breadth of anterior ocellus 

 and but faintly discernible except anteriorly; frontal bristles about 

 eight, only three of these strong ; paraf rontals and paraf acials thinly 

 silvery gray pollinose; antenna black, third segment slightly longer 

 than second; arista pubescent; bucca narrow, black-haired; palpus 

 and proboscis black, both ordinary. 



Thorax densely yellowish gray pollinose, opaque, striping hardly 

 discernible; anterior acrostichal bristles three, the median pair 

 strong; anterior dorsocentral bristles two, strong; humeral bristles 

 two; sublateral bristles two; preapical bristles two, the anterior of 

 which are at least half as long as the posterior ; posterior dorsocentral 



118806—37 201 



