﻿NEW DIPTERA FROM PANAMA a 

 By J. R. MALLOCH 



BUREAU OF ENTOMOLOGY, U. S. DEPARTMENT OF AGRICULTURE 



The descriptions of new species included in this paper are taken 

 from specimens in the U. S. National Museum collection which 

 were collected by A. Busck of the Bureau of Entomology, in 191 1, 

 while a member of the Smithsonian Biological Survey of the Panama 

 Canal Zone. 



FANNIA V ITT AT A, new species 



Male. — Black, thickly gray-dusted; eyes distinctly separated by a 

 velvety-black stripe, eye-margins shining silvery white, orbital bris- 

 tles extending three-fourths to ocelli, frons and epistome slightly 

 produced, face and eye-margins silvered, antennae with the basal 

 two joints yellow, third joint mostly brown, twice as long as second, 

 arista pale at base, nearly bare, distinctly longer than antennae, palpi 

 yellow ; mesonotum thickly gray-dusted, with three brown stripes, 

 the center one very narrow, complete, the outer pair broad, ceasing 

 at beyond middle and interrupted at suture, dorsal bristles strong, 

 four pairs of dorso-central macrochaetae, pleurae gray-dusted, scutel- 

 lum with a small brown mark at base on each side, four strong 

 marginal bristles and a number of discal setae, two of which, beyond 

 middle, are stronger ; abdomen rather short, broad at base and taper- 

 ing towards apex, basal three segments mostly translucent yellow, 

 with a distinct black dorsal stripe, and a spot on each side at poste- 

 rior margin which is more or less coalescent with the central stripe, 

 last segment more or less blackened, with a distinct dorso-central 

 stripe and two rounded spots on posterior third, all segments more 

 or less distinctly gray-dusted, with numerous hairs, and especially 

 the last segment with strong apical bristles, hypopygium normal, 

 the ventral organs not prominent, ventral surface of last segment 

 of abdomen shining black ; legs brownish-black, the knee joints yel- 

 lowish, trochanters yellow, mid femora with a row of bristles on 



1 This paper is the twelfth dealing with the results of the Smithsonian 

 Biological Survey of the Panama Canal Zone. 



Smithsonian^Miscellaneous Collections, Vol. 59, No. 17 



