ART. 29 IMMATURE STAGES OF SARCOPHAGID FLIES GREENE 9 



6. AGRIA AFFINIS Fallen 



Medium to large sized. Dull, yellowish red to a deep red, nearly 

 black; from a lateral view there is a small depression above the 

 posterior cavity. Posterior cavity large, deep, rounded, located 

 centrally on the horizontal axis; tubercles on edge of cavity indis- 

 tinct. Each spiracular plate is small, shining, from dark red to 

 black; each plate has three reddish slits of nearly equal length 

 converging very slightly toward their basal ends; spiracular plates 

 separated by a space nearly equal to the width of one plate. Anal 

 opening distinct, with a rounded tubercle on each side; this tubercle 

 varies somewhat in size. There are indications of an indistinct ridge 

 from the anal opening to the lower edge of the cavity. Anterior 

 spiracles are missing in this material. 



Length, 6-9 mm. ; diameter, 2.5-3.75 mm. 



Melrose Highlands, Massachusetts (Gipsy Moth Laboratory). In 

 national collection and one specimen in collection of R. R. Parker. 

 Reared from larva of Vanessa antiopa. 



7. SARCOPHAGA ELEODIS Aldrich 



Medium sized, dull, dark, yellowish red. Posterior cavity small, 

 nearly round, located entirely below the longitudinal axis; this loca- 

 tion is a little variable; tubercles indistinct or absent. Each spi- 

 racular plate is very dark, shining red, with three narrow, yellow 

 slits ; first slit slightly bent below the middle : middle slits parallel ; 

 on the outside of each plate is a narrow extended area of a dark 

 reddish-black color; spiracular plates separated b}^ a space nearly 

 equal to the width of one plate. Anal opening not very distinct and 

 located near the edge of the cavity; no anal tubercles. Anterior 

 spiracles slightly below the apex of the puparium ; each spiracle has 

 seven yellow lobes ; area on the side reddish brown down to the base. 



Length, 8 mm. ; diameter, 3 mm. 



Maxwell, New Mexico; D. J. Caffrey, collector. Koehler, New 

 Mexico; V. L. Wildermuth, collector. Reared from Eleodes extn- 

 cata^ E. fusiformis^ E. hisjyilabris^ E. ohsoleta^ E. tricostata^ and 

 Asida obvata. 



8. SARCOPHAGA OPIFERA CoquiUett 



Small, dull, yellowish to red. Posterior cavity small, elliptical, 

 located above the horizontal axis; no tubercules visible around the 

 edge. Each spiracular plate is shining, deep reddish with three 

 yellow slits; middle slits nearl3^ parallel; spiracular plates separated 

 by a space less than the width of one plate. Anal opening small, de- 

 pressed, located close, under the posterior cavity ; no anal tubercules. 

 9121—25 2 



